Plasma carburizing with surface micro-melting

Balanovsky, A. E.; Grechneva, M. V.; Huy, Vu Van; Ponomarev, Boris

doi:10.1088/1757-899x/327/4/042010

Cited by 3 publications

(1 citation statement)

References 9 publications

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“…One of the most important problems in the dynamics of rolling stock is the study of forced oscillations of railway vehicles [6][7][8][9][10][11], caused by uneven rails.…”

Section: Introductionmentioning

confidence: 99%

The Vertical Dynamics of the Car, Taking into Account the Irregularity of the Track Gauge

Gozbenko¹,

Kargapoltsev²,

Kuznetsov³

et al. 2019

Proceedings of the International Conference on Aviamechanical Engineering and Transport (AviaENT 2019)

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The paper deals with the vertical dynamics of the car to ensure the safety of trains, the reliability of the cars and the track. It is accepted that the dynamic model of the car has five degrees of freedom. The complex oscillatory process is divided into separate components: vertical, transverse and longitudinal horizontal. It is taken into account that the springsuspended weight of the car can also make angular oscillations. The equations of motion of a mechanical system are composed using the second-kind Lagrange equations by first generating the expressions for potential and kinetic energy. Since one of the most important problems in the dynamics of rolling stock is the study of forced oscillations of railway vehicles caused by irregularities of rails, therefore, the formulas of Professor N.N. Kudryavtsev were used as a kinematic effect on bogies. In the model being developed, the two wheels of the car trolley will be considered as one, then the equivalent perturbation is the average value of the perturbations transmitted to each wheel, that is, the pitching of the bogies can be neglected. Isolated perturbations are determined using reasoning about the time of passage of the wheels over the track irregularity. The obtained differential equations are rather complicated for an analytical solution. Therefore, to find solutions, the MathCAD mathematical software package was used. It provides a set of built-in functions for the numerical solution of differential equations. The massinertial characteristics and geometrical dimensions of the gondola car of model 12-132 are taken as input data. The speed of movement of the car and the length of the irregularities varied in a fairly wide range. As a result of numerical modeling, graphs of linear and angular oscillations versus irregularity lengths were obtained. It was found that the amplitude of oscillations varies within certain limits from 0 to 0.007 (vertical oscillations) and from-10-4 to +10-4 rad. (for the speed of 20 m/s and the length of the irregularity of 25 m).

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“…One of the most important problems in the dynamics of rolling stock is the study of forced oscillations of railway vehicles [6][7][8][9][10][11], caused by uneven rails.…”

Section: Introductionmentioning

confidence: 99%

The Vertical Dynamics of the Car, Taking into Account the Irregularity of the Track Gauge

Gozbenko¹,

Kargapoltsev²,

Kuznetsov³

et al. 2019

Proceedings of the International Conference on Aviamechanical Engineering and Transport (AviaENT 2019)

View full text Add to dashboard Cite

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Introduction of additional inertial couplings in mathematical models of problems of vibration protection and vibration isolation

Kargapoltsev

Gozbenko

Karlina

et al. 2019

IOP Conf. Ser.: Earth Environ. Sci.

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The article considers forced vibrations of a four-axle vehicle with a double spring suspension. The motion of a system with six degrees of freedom can be represented with sufficient accuracy by a system with two degrees of freedom. Therefore, the vehicle body has two degrees of freedom: lateral motion and wabbling, bouncing and pitching of trolleys will be neglected. The total number of degrees of freedom of the model is two. A method that leads to a closed solution for steady-state oscillations is considered. As a result of the research, differential equations of motion of the system were generated and an analytical solution was obtained for the case of application of an external piecewise constant driving force.

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Evaluation of the economic feasibility of the introduction of plasma hardening technologies in the Far North enterprises

Konyuhov

Gladkih

Chemezov

2019

IOP Conf. Ser.: Mater. Sci. Eng.

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The various technologies of plasma surface hardening of the crests of wheel pairs with regard to the conditions of the Far North are considered by the example of Norilsk enterprises. When considering economic issues the cost of repairing wheelsets were considered. The advantages and disadvantages of each method of plasma surface hardening are shown. Criteria for the economic feasibility of their implementation are established. It is shown that from the standpoint of hardening process cost of one wheel, it is preferable to use the plasma quenching technology in the arc mode.

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Plasma carburizing with surface micro-melting

Cited by 3 publications

References 9 publications

The Vertical Dynamics of the Car, Taking into Account the Irregularity of the Track Gauge

The Vertical Dynamics of the Car, Taking into Account the Irregularity of the Track Gauge

Introduction of additional inertial couplings in mathematical models of problems of vibration protection and vibration isolation

Evaluation of the economic feasibility of the introduction of plasma hardening technologies in the Far North enterprises

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