Journal of Machinery Manufacture and Reliability
     ISSN (Print) 1934-9394 - ISSN (Online) 1052-6188
     Published by Springer-Verlag

Table of Contents

  • Modern tendencies of technological development in mechanical engineering and prospects for the use of progressive metal shaping methods Export to Refworks

    • Abstract:

      • Content Type Journal Article
      • Category Chronicle

      • DOI 10.3103/S1052618809050203

      • Authors
        • V. A. Dubrovskii
        • N. I. Podvolotskaya
        • V. P. Stupnikov

      PubDate: Sun, 11 Oct 2009 07:06:55 GMT
  • Increase of the static load rating of bearings Export to Refworks

    • Abstract:

        In this paper, the relationships determining the residual deformation behavior depending on the amount and degree of the contact loads are submitted and the feasibility of increasing the linear guideways’ static capacity arising from them is shown.

      • Content Type Journal Article
      • Category Reliability, Durability, and Wear Resistance of Machines and Constructions

      • DOI 10.3103/S1052618809050112

      • Authors
        • A. V. Orlov

      PubDate: Sun, 11 Oct 2009 07:06:53 GMT
  • Algorithms of take-off and landing termination control for single-rotor helicopters Export to Refworks

    • Abstract:

        A procedure for the structural synthesis of control algorithms and the calculation of their parameters is stated. It is demonstrated by theoretical analysis and the mathematical simulation of control process dynamics that the synthesized algorithms can implement an assigned dynamic behavior in systems and provide for their stability during parametric and coordinate disturbances.

      • Content Type Journal Article
      • Category Automation and Control in Machinery Manufacture

      • DOI 10.3103/S105261880905015X

      • Authors
        • P. D. Krut’ko

      PubDate: Sun, 11 Oct 2009 07:06:52 GMT
  • Dynamics of hydraulic vibration machine for soil compaction Export to Refworks

    • Abstract:

        The dynamics of a manual vibration machine for soil compaction is studied. A machine equipped with a double-spool-type hydraulic vibrator is investigated. The relationships of the parameters of the machine that support its efficient operation are established.

      • Content Type Journal Article
      • Category Machine Mechanics

      • DOI 10.3103/S1052618809050033

      • Authors
        • V. I. Erem’yants
        • M. Uraimov

      PubDate: Sun, 11 Oct 2009 07:06:52 GMT
  • Study of a radial gasostatic bearing featuring new properties Export to Refworks

    • Abstract:

        A mathematical model of a radial cylinder-shaped gas suspender featuring spiral grooves on a fixed component affected with reverse-mirroring fracture along the bottom and top generants has been developed. Based on solving the boundary-value problem numerically, it has been found that the bearing is capable of carrying a substantial load in the coaxial position. Such an effect reduces any possibility of the contact of the support components during the course of operation and increases the dependability of the support.

      • Content Type Journal Article
      • Category Experimental Machine Mechanics, Diagnostics, and Testing

      • DOI 10.3103/S1052618809050173

      • Authors
        • V. N. Vinokurov
        • A. V. Emel’yanov

      PubDate: Sun, 11 Oct 2009 07:06:51 GMT
  • Nonlinear oscillations of a pipe bundle in a coolant cross flow Export to Refworks

    • Abstract:

        An algorithm and software allowing for the investigation of the dynamics of multicomponent hydroelastic systems in a fluid cross flow by considering its real ranging and conditions (gap sizes and disposition, eccentricity, and so on) have been developed.

      • Content Type Journal Article
      • Category Machine Mechanics

      • DOI 10.3103/S105261880905001X

      • Authors
        • S. M. Kaplunov, Moscow Russia
        • T. N. Fesenko, Moscow Russia
        • S. A. Koretskii, Moscow Russia

      PubDate: Sun, 11 Oct 2009 07:06:50 GMT
  • Wavelike gas dispersion in a liquid in a compressor-free environment Export to Refworks

    • Abstract:

        An experimental investigation has been performed regarding the operation of a new type of wave-generating gas disperser in a liquid in entrainment mode in a compressor-free environment. The wave-generating disperser and ejector-caused gas flow relationship with the water pressure at the disperser inlet under different design factors has been obtained. The gas bubbles’ average size has been measured in a biphase stream leaving the disperser. Recommendations for the selection of the disperser parameters have been submitted. The goal of this work is the simplification of plants intended for dispersing gas in a liquid, diminishing the gas bubbles’ size, and reducing the dispersion energy flow. This is a pressing problem for many chemical technology targets, for wastewater biological treatment systems, and for chlorinating or ozonizing tap water.

      • Content Type Journal Article
      • Category New Technology in Machinery Manufacture

      • DOI 10.3103/S1052618809050136

      • Authors
        • R. F. Ganiev
        • D. A. Zhebynev
        • A. S. Korneev

      PubDate: Sun, 11 Oct 2009 07:06:50 GMT
  • Methodological issues of mechanism accuracy computation under the nonlinear correlation of primary errors Export to Refworks

    • Abstract:

        Specific issues of providing a computational basis for the accuracy of mechanisms with interdependent primary errors are considered. It is shown that in the presence of a nonlinear correlation, a number of common theses of accuracy theory require certain modifications, since they do not fit in the standard approaches to the computation of kinematic chain accuracy.

      • Content Type Journal Article
      • Category New Technology in Machinery Manufacture

      • DOI 10.3103/S1052618809050148

      • Authors
        • V. I. Sergeev, Moscow Russia

      PubDate: Sun, 11 Oct 2009 07:06:50 GMT
  • The concept of safety of aircraft structures Export to Refworks

    • Abstract:

        This article deals with modern approaches to providing endurance strength, safe operating life, and durability of aircraft. The major survival criteria mentioned here are scheduled damages, fatigue fractures, inspection intervals in duplicated strength components, and the prevention of fatigue damages.

      • Content Type Journal Article
      • Category Human Safety of Machines and Constructions

      • DOI 10.3103/S1052618809050197

      • Authors
        • G. I. Nesterenko, Moscow Russia

      PubDate: Sun, 11 Oct 2009 07:06:49 GMT
  • The mechanism of interaction between natural laminar hydrosilicates and friction surfaces Export to Refworks

    • Abstract:

        Analytical results are presented regarding how powder-like laminar hydrosilicates of the serpentinite type interact with the surfaces of components in tribointerfaces. The greatest amount of attention is paid to the processes of the formation of protective cermet layers on friction surfaces due to the atomic and molecular structure of laminar hydrosilicates.

      • Content Type Journal Article
      • Category Reliability, Durability, and Wear Resistance of Machines and Constructions

      • DOI 10.3103/S1052618809050124

      • Authors
        • L. I. Pogodaev, Sankt-Petersburg Russia
        • I. A. Buyanovskii, Sankt-Petersburg Russia
        • E. Yu. Kryukov, Sankt-Petersburg Russia
        • V. N. Kuz’min, Sankt-Petersburg Russia
        • V. V. Usachev, Sankt-Petersburg Russia

      PubDate: Sun, 11 Oct 2009 07:06:47 GMT
  • Wear of the pipe-spacing grating pair of a steam generator in a lead heat carrier Export to Refworks

    • Abstract:

        The results of the solution of tribological problems emerging when friction units operate in heavy liquid metals as heat carriers in nuclear power plants are presented. An installation has been developed to simulate the vibrational wear of friction units in heat exchanging tubes of interfaced units with spacing gratings in order to simulate resistance to the vibration of the steam generator of a fast neutron reactor with lead heat carriers. A method of study has been developed, samples of tubes and spacing gratings have been tested for vibrational wear, and metallographic and profilometric exploration has been performed. The wear mechanism is described and the tentative life of the steam generator pipes is assessed.

      • Content Type Journal Article
      • Category Reliability, Durability, and Wear Resistance of Machines and Constructions

      • DOI 10.3103/S1052618809050100

      • Authors
        • Yu. N. Drozdov
        • A. V. Beznosov
        • V. V. Makarov
        • V. N. Puchkov
        • M. A. Antonenkov
        • D. V. Kuznetsov

      PubDate: Sun, 11 Oct 2009 07:06:46 GMT
  • Modular multispeed gearboxes Export to Refworks

    • Abstract:

        A method of synthesis of kinematic schemes of gearboxes on the basis of single-type modular mechanisms is presented. If the number of modular mechanisms forming the gearbox is increased, the number of gears increases sharply. Mathematical numerical systems, in which the number of digits is equal to the number of similar modules and the numerals in these digits coincide with the combination of connected control elements and determine the respective gear ratio, are brought into single-valued correspondence with modular kinematic diagrams.

      • Content Type Journal Article
      • Category Machine Mechanics

      • DOI 10.3103/S1052618809050045

      • Authors
        • K. B. Salamandra, Moscow Russia

      PubDate: Sun, 11 Oct 2009 07:06:46 GMT
  • Computation of the thermal field of a woven heater with a compact arrangement of high-resistance filaments Export to Refworks

    • Abstract:

        The main purpose of the present study is to obtain working mathematical relationships that allow for the carrying out of practical thermal computations for woven heating elements consisting of a warp and weft of only high-resistance filaments without any gaps between them. Until the present time, a description of the thermal fields at the surface of such heating elements has not been made. The results of the study can be used in computations for woven heating elements and in computations for heating elements of a similar structure made by other technologies and other materials.

      • Content Type Journal Article
      • Category Experimental Machine Mechanics, Diagnostics, and Testing

      • DOI 10.3103/S1052618809050185

      • Authors
        • A. A. Shul’zhenko, Moscow Russia
        • M. B. Modestov, Moscow Russia
        • B. A. Mnev, Moscow Russia

      PubDate: Sun, 11 Oct 2009 07:06:45 GMT
  • Experimental verification of a mathematical model of the wheel-supporting surface interaction during nonstationary rolling motion Export to Refworks

    • Abstract:

        A new mathematical model of the oscillating processes of complex systems of elastically deformed solids with superimposed nonholonomic rheonomous constraints under random perturbation is discussed in regards to the contact (tribological) interaction of a wheel and a supporting surface, torsional wheel oscillations, and transmission as applied to multiple-seated wheeled vehicles. The results of the testing of a vehicle by means of a stand with chassis dynamometers in stationary and nonstationary modes of wheel rolling motion are given. The obtained regularities make it possible to depict the picture of oscillations of the system under consideration, which will help to formulate complex requirements for the active safety control systems of multiaxis wheeled vehicles in the future.

      • Content Type Journal Article
      • Category Experimental Machine Mechanics, Diagnostics, and Testing

      • DOI 10.3103/S1052618809050161

      • Authors
        • B. N. Belousov, Moscow Russia
        • S. A. Shelomkov, Moscow Russia
        • T. I. Ksenevich, Moscow Russia
        • A. A. Kupreyanov, Moscow Russia

      PubDate: Sun, 11 Oct 2009 07:06:45 GMT
  • Parameters of fracture mechanics under combined loading by normal separation and In-plane shear Export to Refworks

    • Abstract:

        The methods of separable functions and finite elements have been used to generate design formulas of the J-integral for a tensing plate made of material reinforced by a deformation with a centrally inclined through crack. The crack angle allows for a variation of the loading conditions from normal separation up to the combined loading by normal separation and in-plane shear. The correcting coefficients η pl and η pl COD that enter into the formulas of the J integral depend on the relation between normal separation and in-plane shear parameters and on the deformation reinforcement factor. At the same time, the normalized correcting coefficients η pl (θ)/η pl (θ = 0) are practically independent of the sample geometry.

      • Content Type Journal Article
      • Category Reliability, Durability, and Wear Resistance of Machines and Constructions

      • DOI 10.3103/S1052618809050057

      • Authors
        • Yu. G. Matvienko, Moscow Russia
        • E. L. Muravin, Moscow Russia

      PubDate: Sun, 11 Oct 2009 07:06:44 GMT
  • Numerical simulation of wind resonance of a circular profile by means of the vortex element method Export to Refworks

    • Abstract:

        The problem regarding the numerical simulation of a circular profile motion in a liquid flow has been studied. To calculate the flow and the aerodynamic loads acting on the profile, the vortex element method is used. The phenomenon of wind resonance has been examined. The investigation has revealed the range of self-frequencies of the circular profile fixed elastically, under which the periodical aerodynamic forces caused by Karman vortexes descend and initiate the resonance aeroelastic oscillations of the profile.

      • Content Type Journal Article
      • Category Machine Mechanics

      • DOI 10.3103/S1052618809050021

      • Authors
        • I. K. Marchevskii, Moscow Russia
        • O. I. Ivanov, Moscow Russia

      PubDate: Sun, 11 Oct 2009 07:06:44 GMT
  • Fracture prediction under the simultaneous bending and straining of a wide bar at an elevated temperature Export to Refworks

    • Abstract:

        In processes of metal formation at an elevated temperature, the fracture criterion should depend at least on the parameter of a triaxial stressed state, the equivalent strain rate, and the temperature. This significantly complicates the investigation in comparison with the case of cold processing. However, in the case of fracture initiation at the free surface under plane-strain conditions, a computational scheme is found that is similar to the one used in processes of cold working under pressure, although in another space. This scheme is used for the prediction of the beginning of the fracture in the process of the simultaneous bending and straining of a wide bar.

      • Content Type Journal Article
      • Category Reliability, Durability, and Wear Resistance of Machines and Constructions

      • DOI 10.3103/S1052618809050070

      • Authors
        • S. E. Aleksandrov, Moscow Russia
        • E. A. Lyamina, Moscow Russia

      PubDate: Sun, 11 Oct 2009 07:06:44 GMT
  • Research on the fracture process of steels by the acoustic method and the pitch net method Export to Refworks

    • Abstract:

        The results of experimental investigations on the process of damage accumulation in low-carbon and medium-carbon steels subjected to static and cyclic loading are presented. The algorithm of the damage evaluation of steels under static loading and high-cycle fatigue with the use of results of acoustic measurements, the measurement of hardness, and the evaluation of the microplastic deformation by the net method is proposed.

      • Content Type Journal Article
      • Category Reliability, Durability, and Wear Resistance of Machines and Constructions

      • DOI 10.3103/S1052618809050069

      • Authors
        • V. V. Mishakin, Nizhni Novgorod Russia
        • V. A. Klyushnikov, Nizhni Novgorod Russia
        • N. V. Kassina, Nizhni Novgorod Russia

      PubDate: Sun, 11 Oct 2009 07:06:42 GMT
  • Numerical modeling an elastohydrodynamic contact of shaped rollers with allowance for misalignment of their axes Export to Refworks

    • Abstract:

        A method of numerically solving an elastohydrodynamic (EHD) contact of shaped rollers with allowance for misalignment of their axes in a plane perpendicular to the rolling direction is advanced. The mode of EHD lubrication is typical of such friction assemblies as roller bearings and gearings, in which the contacting elastic bodies are separated by a lubricant film and deformed under the action of an external load. Results of numerical modeling demonstrate the significant effect of the misalignment angle on the distribution of pressure and thickness of the lubricant film in the EHD contact and can be used further to analyze friction in a contact area and the stress tensor in a subsurface layer. The mathematical model of the EHD contact is described through nonlinear integro-differential equations and inequalities. The computational algorithm is based on Newton’s method.

      • Content Type Journal Article
      • Category Reliability, Durability, and Wear Resistance of Machines and Constructions

      • DOI 10.3103/S1052618809050094

      • Authors
        • M. Ya. Panovko

      PubDate: Sun, 11 Oct 2009 07:06:38 GMT
  • Specificity of the strength calculation of components made from brittle materials Export to Refworks

    • Abstract:

        The deformation process of structural materials that have been developed intensively on the basis of new technologies, including engineering ceramics, is different from the deformation process of common structural materials. Relationships allowing for a proper description of the process of inelastic nonisothermal loading of components made of semibrittle materials by taking into account the physical peculiarities of the deformation process, such as a violation of the single-curve law, different resistance against strain and compression, a variation of the residual volume, etc., are presented.

      • Content Type Journal Article
      • Category Reliability, Durability, and Wear Resistance of Machines and Constructions

      • DOI 10.3103/S1052618809050082

      • Authors
        • O. A. Batanova, Moscow Russia

      PubDate: Sun, 11 Oct 2009 07:06:38 GMT
  • Computation algorithms for the calculation of forced oscillation intensity estimates in linear steady-state mechanical systems Export to Refworks

    • Abstract:

        Computation procedures are set forth that are required for the calculation of forced oscillation intensity estimates in linear steady-state mechanical systems with incomplete information on acting disturbances (disturbance accumulation problems). A classical Bulgakov problem, the case of the action of disturbances of an unlimited duration, is considered, as well as the action of disturbances of a finite duration, periodic modes, and periodic mode establishment processes. It is shown that for systems given in the Cauchy normal form, the estimate calculations are reduced to operations regarding the fundamental matrix of a homogeneous system.

      • Content Type Journal Article
      • Category Machine Mechanics

      • DOI 10.3103/S1052618809060028

      • Authors
        • M. Ya. Izrailovich, Moscow Russia

      PubDate: Sat, 12 Dec 2009 14:22:45 GMT
  • Dynamics and synthesis of the parameters of a positioning drive Export to Refworks

    • Abstract:

        According to research data on the space of dimensionless parameters of positioning drive mathematical models with engines of different types, a general method of their analysis and synthesis has been constructed. Before the investigational models were developed, the main factors influencing the dynamics of the drive were created in the form of a vector of the parameters and limitations. The method is based on the use of dimensionless criterion dependences representing the connection between the time factor of the drive movement process and the structural factor characterizing its response rate. Algorithms for solving the problems regarding the selection of the positioning drive parameters are considered.

      • Content Type Journal Article
      • Category Machine Mechanics

      • DOI 10.3103/S1052618809060016

      • Authors
        • G. V. Kreinin, Moscow Russia
        • S. Yu. Misyurin, Moscow Russia

      PubDate: Sat, 12 Dec 2009 14:22:45 GMT
  • Markovian model for the growth of corrosion defects and its application for the control of pipeline integrity Export to Refworks

    • Abstract:

        A Markovian model for the growth parameters of defects (length, depth, and width) based on the use of in-pipe and verification measurements has been developed. Its consistency and adequacy were verified by an independent method based on the combination of a differential equation describing the growth of defect parameters with the modeling of the initial sizes of defects by the Monte Carlo method. The developed model allows for the determination of the probability of the existence of defect parameters in a determined state at any time and the intensity of the transition from one state to another. The model provides the possibility to obtain an evaluation of the conditional probability for the breakdown of any section of the pipeline by the defect growth parameters obtained as a result of in-pipe crack detection. Based on the developed model, an algorithm for the time optimization of the subsequent inspection/repair of the pipeline was constructed. The methodology was approved on a virtual real pipeline with the use of results of in-pipe and verification measurements.

      • Content Type Journal Article
      • Category Human Safety of Machines and Constructions

      • DOI 10.3103/S1052618809060168

      • Authors
        • L. V. Poluyan, Yekaterinburg Russia

      PubDate: Sat, 12 Dec 2009 14:22:44 GMT
  • Mechanisms of the performance of linear and rotational motion based on the torsion of inextensible cords Export to Refworks

    • Abstract:

        The peculiarities of the creation of a new mechanical transmission based on the torsion of inextensible cords are considered. These flexible mechanisms with large transmission ratios can be used for the performance of progressive and rotational motion without the application of traditional reducing gears.

      • Content Type Journal Article
      • Category Machine Mechanics

      • DOI 10.3103/S1052618809060041

      • Authors
        • Yu. A. Zavgorodnii, Vladivostok Russia
        • V. F. Filaretov, Vladivostok Russia
        • Yu. A. Tsepkovskii, Vladivostok Russia

      PubDate: Sat, 12 Dec 2009 14:22:44 GMT
  • Manufacturer’s trials of hydroelastic supports. Static and dynamic characteristics Export to Refworks

    • Abstract:

        This article considers some methods and test data of the static and dynamic properties of a hydroelasti equipment. The results of a pilot study of the load and the stiffening characteristics of the vibration isolator in its longitudinal and transverse directions, as well as its dynamic characteristics, are shown in the article. The static and dynamic characteristics depending on the weight load for product certification are mentioned here as well.

      • Content Type Journal Article
      • Category Experimental Machine Mechanics, Diagnostics, and Testing

      • DOI 10.3103/S1052618809060132

      • Authors
        • B. A. Gordeev, N. Novgorod-Moscow Russia
        • A. V. Kiryukhin, N. Novgorod-Moscow Russia
        • A. V. Sinev, N. Novgorod-Moscow Russia
        • V. A. Tikhonov, N. Novgorod-Moscow Russia
        • A. G. Chistyakov, N. Novgorod-Moscow Russia
        • V. V. Yakovlev, N. Novgorod-Moscow Russia

      PubDate: Sat, 12 Dec 2009 14:22:44 GMT
  • Development of a method to calculate the strength reliability of tooth gears based on the fatigue resistance when the teeth bend Export to Refworks

    • Abstract:

        A verified method is discussed regarding how to calculate the strength reliability of tooth gears when they bend and thus resist fatigue. It is based on the computer simulation of random values and the mathematical apparatus of nonparametric statistics. The effective and tolerable bending stresses are described with samples generated by nonparametric sensors. It allows for the correct assessment of the probability of the failure-free performance of tooth gears under any loading conditions.

      • Content Type Journal Article
      • Category Reliability, Durability, and Wear Resistance of Machines and Constructions

      • DOI 10.3103/S1052618809060065

      • Authors
        • K. V. Syzrantseva, Tyumen’ Russia

      PubDate: Sat, 12 Dec 2009 14:22:43 GMT
  • Control of electromechanical systems in sliding conditions Export to Refworks

    • Abstract:

        An algorithm of controlling the angular velocity of a two-weight system with an elastic motion transmission mechanism is synthesized. The system’s dynamics is investigated theoretically; the domain of the existence of stable conditions is estimated; and it is shown that the system’s image point slides along the phase trajectory of the reference model, which serves to assign the dynamic characteristics of the designed system. The results of the mathematical simulation of control processes are presented.

      • Content Type Journal Article
      • Category Automation and Control in Machinery Manufacture

      • DOI 10.3103/S1052618809060119

      • Authors
        • P. D. Krut’ko, Moscow Russia

      PubDate: Sat, 12 Dec 2009 14:22:40 GMT
  • Linear and axially symmetric filtration models Export to Refworks

    • Abstract:

        Mathematical models are described for processes with time-dependent control functions, namely, pressure and discharge sources, as well as with a non-steady-state filtration area boundary. The possibility of the effect of viscosity with properties dependent on time as a consequence of the influence of temperature is taken into account. The limited nature of Darcy’s law, due to its incorrectness in axially symmetric cases, is shown. A new filtration law correct in axially symmetric processes is proposed, of which Darcy’s law is a special case.

      • Content Type Journal Article
      • Category New Technology in Machinery Manufacture

      • DOI 10.3103/S1052618809060107

      • Authors
        • B. A. Shcheglov, Moscow Russia

      PubDate: Sat, 12 Dec 2009 14:22:39 GMT
  • Optimization of the pultrusion process for a rod with a large diameter Export to Refworks

    • Abstract:

        A technique of the optimization of the pultrusion process for rods with a large diameter with the use of methods of mathematical modeling is described. An example of the search for the optimum technological parameters for the pultrusion of a glass-plastic rod with a diameter of 80 mm is presented.

      • Content Type Journal Article
      • Category New Technology in Machinery Manufacture

      • DOI 10.3103/S1052618809060090

      • Authors
        • A. A. Safonov, Moscow Russia
        • Yu. V. Suvorova, Moscow Russia

      PubDate: Sat, 12 Dec 2009 14:22:39 GMT
  • On the stability of stochastic viscoelastic systems Export to Refworks

    • Abstract:

        By the example of elastic and viscoelastic systems, it is shown that a deterministic parametric system, which is unstable according to Liapunov, can be stabilized by means of the imposition of random noise on the parametric load. The noise is taken in the form of a Gaussian stationary process with latent periodicity. The system stability and the stability with respect to the statistical moments of the first and second orders are considered. The analysis is constructed on the basis of the computation of the maximum Liapunov factor corresponding to the stability type under consideration. The effect of the viscous properties of a material on the stability factors is investigated.

      • Content Type Journal Article
      • Category Experimental Machine Mechanics, Diagnostics, and Testing

      • DOI 10.3103/S1052618809060120

      • Authors
        • V. D. Potapov, Moscow Russia

      PubDate: Sat, 12 Dec 2009 14:22:39 GMT
  • Reliability calculation for curvilinear insert segments of a gas pipeline in the presence of fracture defects Export to Refworks

    • Abstract:

        On the basis of probabilistic fracture mechanics, in terms of the theory of normally distributed random quantities, the permissible dimensions of fractures of curvilinear pipe insert segments have been found according to the set level of standard reliability, which provides retained strength, design service life, and operational safety of the potentially hazardous gas-pipeline segment under study.

      • Content Type Journal Article
      • Category Human Safety of Machines and Constructions

      • DOI 10.3103/S1052618809060156

      • Authors
        • V. I. Kucheryavyi, Ukhta Russia
        • S. N. Mil’kov, Ukhta Russia

      PubDate: Sat, 12 Dec 2009 14:22:39 GMT
  • Evaluation of equivalent (by residual life) periods of thermal soaking during complex fatigue tests of samples of structural components Export to Refworks

    • Abstract:

        For the purpose of the substantiation of the parameters of forced fatigue tests, equivalent (by residual life) periods of thermal soaking during complex fatigue tests of smooth samples were determined by the calculation method. The variation of the lifetimes of samples with a hole and samples of riveting joints of D16AT and AK4-1AT1 aluminum alloys was experimentally investigated as a function of the previous stress history. The effect of aging processes on the fatigue strength of the samples that occur during soakings with different durations under natural conditions during the action of heightened temperature was evaluated. During the selection of the parameters of forced fatigue tests, it was shown to be necessary to take into account the different nature of the variation of the mechanical characteristics of structural components, which depended on the type of the structural component, the alloy, the soaking temperature, and modes of the fatigue tests. The results can be used during the design of experiments for the evaluation of effects of various factors on the fatigue life of structural components and during the forecasting of their operational life.

      • Content Type Journal Article
      • Category Reliability, Durability, and Wear Resistance of Machines and Constructions

      • DOI 10.3103/S1052618809060053

      • Authors
        • A. A. Kalyuta, Novosibirsk Russia
        • G. F. Rudzei, Novosibirsk Russia

      PubDate: Sat, 12 Dec 2009 14:22:38 GMT
  • Contact fracture of a bushing in the case of cracks near the friction surface Export to Refworks

    • Abstract:

        The problem of the contact deformation of a friction couple bushing is discussed. It is assumed that the bushing has an arbitrary number of rectangular cracks near the friction surface. They have boundary areas within which the cracks interact. The boundary value problem of the equilibrium of the friction couple bushing with cracks interacting along the edges is tackled by solving the system of nonlinear singular integrodifferential equations with a kernel of the Kochi type. The solution of this system of equations has yielded the normal and tangent forces in the interface. The condition of the limiting equilibrium of the crack with the boundary regions is formulated by taking into account the criterion of the limiting stretching of the material’s bonds.

      • Content Type Journal Article
      • Category Reliability, Durability, and Wear Resistance of Machines and Constructions

      • DOI 10.3103/S1052618809060077

      • Authors
        • V. M. Mirsalimov, Baku Azerbaidzhan

      PubDate: Sat, 12 Dec 2009 14:22:37 GMT
  • On the implementation of ultrasonic technology Export to Refworks

    • Abstract:

        The results of processing various materials with autoresonance ultrasonic turning are presented. After the ultrasonic processing of metals, nanostructured near-surface layers emerge that are responsible for the macromechanical characteristics of the material. The developed technology allows for the processing of various hard-to-machine materials with the obtainment of a surface of heightened geometrical and mechanical properties and with minimum power inputs and material capacity.

      • Content Type Journal Article
      • Category New Technology in Machinery Manufacture

      • DOI 10.3103/S1052618809060089

      • Authors
        • V. K. Astashev, Moscow Russia
        • N. A. Andrianov, Moscow Russia
        • M. P. Kozochkin, Moscow Russia
        • L. V. Kolik, Moscow Russia
        • V. L. Krupenin, Moscow Russia
        • N. V. Solis-Pinargote, Moscow Russia

      PubDate: Sat, 12 Dec 2009 14:22:37 GMT
  • On the occurrence of self-synchronization of autooscillations of turbocompressor rotor blades Export to Refworks

    • Abstract:

        The self-synchronization of the spectral parameters of turbocompressor blades is studied, as well as its connection with nonlinear resonance during fluttering. The evolution of blade oscillations during the growth of turbocompressor rotor revolutions is characterized by the concurrence of torsional and flexural oscillation modes, a change of the base frequencies of the rotor blades, and the appearance of a common synchronization frequency in their spectrum. Fluttering comes with a loss of stability of the blades’ oscillation mode at the synchronization frequency. Estimates are obtained on the basis of the spectral analysis of the recording of transient processes of axial and centrifugal turbocompressors. The parameters of the blade oscillation modes and their power have been identified by means of the construction of models of the processes on the basis of the technology of Proni spectral analysis.

      • Content Type Journal Article
      • Category Machine Mechanics

      • DOI 10.3103/S105261880906003X

      • Authors
        • R. F. Ganiev, Moscow Russia
        • O. B. Balakshin, Moscow Russia
        • B. G. Kukharenko, Moscow Russia

      PubDate: Sat, 12 Dec 2009 14:22:35 GMT
  • New planning methods of the scope of testing of nondiscardable expensive objects of a movable unit type Export to Refworks

    • Abstract:

        This article is devoted to a new approach of planning the testing of expensive objects. The topicality of the matter comes from the fact that the known methods of test planning are developed for items of serial and large-scale production when during the testing process it is possible to discard the set of products. The essence of the new approach is based on the nondiscarding of expensive objects. Updating the failed assembly element with the repetition of the testing until updating on a stand is taken as the basis. Analytical expressions of the testing scopes are obtained for different laws of failure distribution. The testing types and scopes of separate assembly units, mechanisms, and items as a whole are presented. The results of the investigations are certified by long-term tests of test samples and implemented in the industry standard.

      • Content Type Journal Article
      • Category Experimental Machine Mechanics, Diagnostics, and Testing

      • DOI 10.3103/S1052618809060144

      • Authors
        • V. M. Trukhanov, Volgograd Russia

      PubDate: Sat, 12 Dec 2009 14:22:32 GMT
  • Application of the method of discrete vortices to compute self-oscillations of a tube in liquid flow Export to Refworks

    • Abstract:

        The method of mathematical modeling and the application of the advanced method of discrete vortices to calculate the parallel-sided separated flow around bodies oscillating in the flow are presented. These methods find an application in the investigation of the nature of hydrodynamic mechanisms of the vibration excitation of tube bundles in heat-exchange apparatuses.

      • Content Type Journal Article
      • Category Machine Mechanics

      • DOI 10.3103/S1052618809040037

      • Authors
        • S. M. Kaplunov, Moscow Russia
        • N. G. Val’es, Moscow Russia
        • L. I. Shitova, Moscow Russia

      PubDate: Tue, 29 Sep 2009 04:11:20 GMT
  • Chaotic frictional self-oscillations of the elastic layer contacting the moving semispace Export to Refworks

    • Abstract:

        It is revealed that the dynamic behavior of the elastic layer becomes chaotic in contact with the rigid semispace. A bifurcation diagram of the process of doubling of the period of self-oscillations in response to the intensity of the friction mechanism is constructed.

      • Content Type Journal Article
      • Category Machine Mechanics

      • DOI 10.3103/S1052618809040013

      • Authors
        • V. I. Erofeev, Nizhni Novgorod Russia
        • V. V. Kazhaev, Nizhni Novgorod Russia

      PubDate: Tue, 29 Sep 2009 04:11:19 GMT
  • Contact interaction and fracture of the surface layer during rolling friction and wedging Export to Refworks

    • Abstract:

        The results of physical and mathematical simulation and fracture of the cracked surface layer during rolling friction and wedging are presented. The simulation is performed with the Lagrangian method of finite elements using the software package ANSYS with the LS-DYNA problem solver. The regularities of elastoplastic deformation, fracture, and wear rate of the surface layer during contact interaction in rolling friction are analyzed.

      • Content Type Journal Article
      • Category Reliability, Durability, and Wear Resistance of Machines and Constructions

      • DOI 10.3103/S1052618809040086

      • Authors
        • Yu. G. Matvienko, Moscow Russia
        • M. A. Bubnov, Moscow Russia

      PubDate: Tue, 29 Sep 2009 04:11:17 GMT
  • Stability and damping with the electromechanical system of turning of rotor excavators in the process of operation Export to Refworks

    • Abstract:

        The dynamic stability of the electromechanical system of turning of rotor excavators is studied with the allowance for the feedback of elastic vibrations of the actuator in the face with the lateral cutting force. The regions of instability are revealed and their relation to the design parameters of the cutting equipment is established. The conditions of radical elimination of the instability and damping of the dynamic system are determined by generating dissipative forces directly in the face cutting process.

      • Content Type Journal Article
      • Category Machine Mechanics

      • DOI 10.3103/S1052618809040050

      • Authors
        • V. Yu. Chudnovskii, Samaria Israel

      PubDate: Tue, 29 Sep 2009 04:11:17 GMT
  • Theoretical and experimental methods for creating expensive objects with a given high reliability level Export to Refworks

    • Abstract:

        The paper is devoted to the development of a new approach to creating complicated expensive objects like mobile special-purpose equipment with a given reliability level. An analytical method for calculating control actions and its mathematical model based on using various experimental conditions and reprocessing methods are presented. Methods for estimating control actions in the form of constructive, technological, and operating parameters are stated. Mathematical models for calculating a reliability function at all stages of production life taking into account control actions are developed.

      • Content Type Journal Article
      • Category Reliability, Durability, and Wear Resistance of Machines and Constructions

      • DOI 10.3103/S1052618809040062

      • Authors
        • V. M. Trukhanov, Volgograd Russia

      PubDate: Tue, 29 Sep 2009 04:11:16 GMT
  • Lubricating materials with additives (problems and perspectives) Export to Refworks

    • Abstract:

        One of many possible directions of further improvement of lubricating compositions with additives is considered. It consists in joint use of additives to oil in the form of powdered remetallisants and mineral friction modifying agents, and this allows realization of a synergistic effect in the structure of protective metal-ceramic coatings significantly increasing the operating ability of tribojoints.

      • Content Type Journal Article
      • Category Reliability, Durability, and Wear Resistance of Machines and Constructions

      • DOI 10.3103/S1052618809040116

      • Authors
        • V. N. Kuz’min, St. Petersburg Russia
        • L. I. Pogodaev, St. Petersburg Russia
        • V. V. Usachev, St. Petersburg Russia

      PubDate: Tue, 29 Sep 2009 04:11:16 GMT
  • Run and cutting power of a conical-camber disk under creep feed grinding of a horizontal face Export to Refworks

    • Abstract:

        The specific features of creep feed grinding of a flat horizontal face with a conical-camber disk are shown. A mathematical model of the volume run under grinding at the stages of penetration and exit is developed. Simplified models of the volume run, the cutting power, and the instantaneous cutting power in the form of polynomials of various orders are proposed. The effect of the grinding depth on the kinematic parameters is studied.

      • Content Type Journal Article
      • Category New Technology in Machinery Manufacture

      • DOI 10.3103/S105261880904013X

      • Authors
        • A. V. Nosenko, Volzhskii, Volgograd oblast Russia
        • S. A. Zotova, Volzhskii, Volgograd oblast Russia
        • S. V. Nosenko, Volzhskii, Volgograd oblast Russia

      PubDate: Tue, 29 Sep 2009 04:11:15 GMT
  • Hydromechanical characteristics of complex-loaded siding bearing with allowance for nonroundness of the pivot shaft and bush Export to Refworks

    • Abstract:

        The problem of calculating the hydromechanical characteristics of complex-loaded sliding bearings is formulated in which the cross section of the bearings is shaped to limit the lubricating layer and the shape is different from the ideal (round cylindrical) one. The results of calculation of the hydromechanical characteristics of the crankshaft connecting-rod bearing of a diesel engine are analyzed where the pivot journal and bush are oval.

      • Content Type Journal Article
      • Category Experimental Machine Mechanics, Diagnostics, and Testing

      • DOI 10.3103/S1052618809040177

      • Authors
        • V. N. Prokop’ev, Chelyabinsk Russia
        • A. K. Boyarshinova, Chelyabinsk Russia
        • K. V. Gavrilov, Chelyabinsk Russia

      PubDate: Tue, 29 Sep 2009 04:11:14 GMT
  • Effect of the difference of materials of the fastening and abutting members of shearing joint on the distribution of contact pressure Export to Refworks

    • Abstract:

        The solution obtained for the distribution of a long contact load with the bolt pressure on the wall of a hole in abutting members of a shearing joint is corrected and extended to the more general case where all members of a joint are made from materials differing in their mechanical characteristics. It is shown that the difference in the elastic modulus of materials of the fastening and abutting members affects the distribution of contact pressure significantly less than the ratio of their diameter and thickness.

      • Content Type Journal Article
      • Category Reliability, Durability, and Wear Resistance of Machines and Constructions

      • DOI 10.3103/S1052618809040074

      • Authors
        • V. F. Kozhevnikov, Moscow Russia

      PubDate: Tue, 29 Sep 2009 04:11:14 GMT
  • Hydrodynamic load impact on vibrations of fuel element clusters in water-moderated water-cooled power reactor (VVER) fuel assemblies Export to Refworks

    • Abstract:

        For the first time, the hydrodynamic loads on fuel element clusters are specified by measuring pressure pulsations in the gap between external line of the fuel elements and the internal surface of the hexahedral casing in VVER-440 fuel elements in the initial hydrodynamic part close to the lower support grid and in the region of steady flow. It is shown that the formation conditions of vortex flow structure at the fuel assembly input influence substantially the hydrodynamic load levels and spectral distribution and the corresponding vibration response of the fuel element clusters in the heat carrier longitudinal flow. The findings may be used to analyze vibration processes in the fuel assemblies of water-cooled nuclear reactors.

      • Content Type Journal Article
      • Category Experimental Machine Mechanics, Diagnostics, and Testing

      • DOI 10.3103/S1052618809040165

      • Authors
        • V. I. Solonin, Moscow Russia
        • V. V. Perevezentsev, Moscow Russia

      PubDate: Tue, 29 Sep 2009 04:11:13 GMT
  • Service life of cylindrical oblique-toothed gear by condition of maximum permissible wear Export to Refworks

    • Abstract:

        A calculation and experimental method to estimate the service life of an evolvent cylindrical oblique-toothed gear is substantiated.

      • Content Type Journal Article
      • Category Reliability, Durability, and Wear Resistance of Machines and Constructions

      • DOI 10.3103/S1052618809040098

      • Authors
        • V. G. Pavlov, Moscow Russia
        • V. D. Yagovitov, Moscow Russia

      PubDate: Tue, 29 Sep 2009 04:11:13 GMT
  • Vibration of tubes with flows Export to Refworks

    • Abstract:

        The effect of the inertia of the cross-section bend of tubes with flows on natural frequencies of their vibrations is analyzed. The consideration of the inertia leads to the compaction of the natural frequency spectrum in its high-frequency part. The laminar flow damps vibrations.

      • Content Type Journal Article
      • Category Human Safety of Machines and Constructions

      • DOI 10.3103/S1052618809040189

      • Authors
        • B. A. Shcheglov, Moscow Russia
        • N. A. Makhutov, Moscow Russia
        • N. V. Sharyi, Moscow Russia

      PubDate: Tue, 29 Sep 2009 04:11:12 GMT
  • Application of vortons to calculate vibrations of a beam in spatial flow Export to Refworks

    • Abstract:

        The modification of the meshless vortex method to solve associated spatial problems of hydroelasticity is described. Symmetrical vorton segments and vorton frames on the surface of a body are used. The obtained algorithm is applied to analyze vibrations of a beam in a subsonic flow. Results of the calculation of a model problem are given.

      • Content Type Journal Article
      • Category Machine Mechanics

      • DOI 10.3103/S1052618809040025

      • Authors
        • G. A. Shcheglov, Moscow Russia

      PubDate: Tue, 29 Sep 2009 04:11:11 GMT
  • Estimating the reliability of elastically curved segment of gas pipeline using the criterion of crack growth resistance Export to Refworks

    • Abstract:

        In the framework of random number theory, a mathematical model describing the reliability of an elastically curved segment of a gas pipeline according to a crack growth resistance criterion for the case where the physicomechanical characteristics of the pipe steel, fracture strength, gas pressure, temperature drop through the wall, and radius of the elastic curve are distributed according to a normal (Gaussian) law is developed. According to this data we find the permissible sizes of cracklike defects under which the safety of operation and residual rated lifetime of potentially dangerous segments of a gas pipeline are guaranteed.

      • Content Type Journal Article
      • Category Human Safety of Machines and Constructions

      • DOI 10.3103/S1052618809040190

      • Authors
        • V. I. Kucheryavyi, Moscow Russia
        • S. N. Mil’kov, Moscow Russia

      PubDate: Tue, 29 Sep 2009 04:11:11 GMT

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