Analysis of dynamic instability of the wheel set of a railway vehicle using the method of generalized hill determinants

Musayev, Janat; Zhauyt, Algazy; Bahtiyar, Balzhan; Kibitova, Rita; Kazhet, Kushtar; Kussyov, Alisher; Kabylkarim, Anar

doi:10.21595/vp.2022.22491

Cited by 2 publications

(3 citation statements)

References 7 publications

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“…The equivalent stresses on the floor of the wagon for both version 1 and version 2 turned out to be around 47 MPa, these values are within the permissible limits and do not affect the service life of the wagon body [20]. The equivalent stress of the center beam for the 1st version in the area of the pivot beam was 105 MPa, with gradual dissipation closer to the center of the wagon up to 6 MPa, and for the 2nd version 125 MPa, at the junction with the pivot beam and dissipation up to 13 MPa closer to the center of the wagon.…”

Section: Mechanical and Mathematical Modeling Of The Stress-strain St...mentioning

confidence: 73%

“…Vertical and horizontal inertia forces of bodies, for R350 m curves, taking into account unevenness. The inertial components of the body in the vertical and horizontal planes, taking into account disturbing factors [20], turned out to be the largest for the 1st version of the body, and the smallest, respectively, without taking into account the load of the car. Inertial forces are also within the permissible limits according to the requirements of GOST 34759-2021.…”

Section: Calculation Of Indicators Of Dynamic Qualities Of a Moderniz...mentioning

confidence: 98%

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Situational Modernization: Dynamic and Strength Characteristics of a Passenger Wagon Universal Design

Issa,

Alizhan,

Musayev

et al. 2024

Preprint

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The purpose of the study is to establish compliance of the design of the modernized car with the requirements for safe operation. An option has been proposed for upgrading a passenger wagon to a Mobile Diagnostic Complex for transporting a combined vehicle equipped with appropriate flaw detection equipment intended for rail diagnostics. The authors have established the most optimal option for locating the diagnostic vehicle on board the Mobile Diagnostic Complex (MDC) wagon, taking into account the additional load from the vehicle. To achieve this goal, the article developed a three-dimensional model of the supporting structure of the wagon body, proposed a methodology and presented the results of a study of the stress-strain state of the wagon body, taking into account the additional weight of the wagon. The article develops a methodology for studying the natural frequencies of vibrations of the wagon body and develops a three-dimensional model of the wagon for calculating dynamic indicators in the Universal Mechanism software package. Taking into account the previously carried out strength calculations, as well as in order to maintain the factory life cycle indicators of the supporting structure of the wagon body, it is recommended to use the model in the first version.

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Section: Mechanical and Mathematical Modeling Of The Stress-strain St...mentioning

confidence: 73%

Section: Calculation Of Indicators Of Dynamic Qualities Of a Moderniz...mentioning

confidence: 98%

Situational Modernization: Dynamic and Strength Characteristics of a Passenger Wagon Universal Design

Issa,

Alizhan,

Musayev

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…If we assume that the dimensionless coefficient of viscous friction  in the axle box suspension vehicle is equal to 0.2, then the critical coefficient of parametric excitation will be approximately 0.392. Therefore, in order for the parametric resonance to develop in the vehicle, the parametric action coefficient must be greater than the reduced critical value [11]. Let the average rigidity railway track be equal to 5000 tf•m -1 , and the coefficient of parametric perturbation 0.4.…”

Section: Trigonometric Methods and Resultsmentioning

confidence: 99%

Method for determining area of parametric resonances of wheelset of railway vehicle

Nikolaev,

Musayev,

Zhauyt

et al. 2023

22nd International Scientific Conference Engineering for Rural Development Proceedings

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Resonance phenomena take place not only in the field of sound and electricity, but also in mechanics, optics, physics, it is known that resonance can be, for example, a cause of destruction of a bridge, tunnel under the action of periodic forces, train derailment due to intense vibrations of rolling stock. It is shown that in mechanical systems with one degree of freedom there can be only simple parametric resonance and the number is countable. The article proposes a method for determining areas of parametric resonances of a railway carriage wheel pair. On the basis of the trigonometric method main areas of parametric resonance of railway carriage wheel pair have been established. To study the vertical displacements of units and parts of the vehicle, the authors proposed a design scheme for a conditional uniaxial vehicle. The authors found that for a given range of parametric perturbation coefficient variation it is enough to consider only one harmonic, and secondly, the width of the resonance zone increases with growth of the parametric perturbation coefficient. The performed studies have established that the longitudinal uneven elasticity of the railway track creates sufficiently large transfer accelerations acting on the rolling stock units, and the maximum amplitude of the wheelset bouncing due to the longitudinal uneven elasticity of the track is in order of magnitude higher than the same indicator from the geometric unevenness on the rail tread surface. The results obtained in establishing the areas of parametric resonances of the wheelset of a railway vehicle will be useful in developing recommendations for normalizing the values of the uneven elasticity of the railway track.

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Analysis of dynamic instability of the wheel set of a railway vehicle using the method of generalized hill determinants

Cited by 2 publications

References 7 publications

Situational Modernization: Dynamic and Strength Characteristics of a Passenger Wagon Universal Design

Situational Modernization: Dynamic and Strength Characteristics of a Passenger Wagon Universal Design

Method for determining area of parametric resonances of wheelset of railway vehicle

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