A nonlinear state-dependent model for vibrations excited by roughness in rolling contacts

Lundberg, Oskar; Finnveden, Svante; Björklund, Stefan; Pärssinen, Mikael; Arteaga, Inés López

doi:10.1016/j.jsv.2015.02.010

Cited by 11 publications

(7 citation statements)

References 20 publications

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“…It can be calculated, according to section 1.2.4, in the time-domain with the rail/wheel simulation program [11], and the nonlinear state-dependent rolling contact model [12].…”

Section: Rail/wheel Contact Force Excitationmentioning

confidence: 99%

“…In an iterative manner for each time-step, the wheel and rail displacements as well as the contact force are determined by balancing the geometric relation stated above with the state-dependent contact force expression (11) where k c (δ) is the state-dependent contact stiffness and are the state-dependent line texture heights. Definitions and methodology of the state-dependent force formulation, which here is applied to the wheel-rail contact, was previously presented in [12]. In summary, the widely used Hertzian contact stiffness and the linearized contact filter are replaced by state-dependent contact stiffness and contact filters which vary with the relative displacement of the wheel and the rail.…”

Section: State-dependent Contact Modelmentioning

confidence: 99%

“…Contact force calculation in the frequency domain It is shown in [8], in a way similar to the TWINS simulation program, that a linear approximation for the contact force spectrum between rail and wheel can be written (12) where v is the train speed, is the roughness spectrum of the running surface of the rail, is the roughness spectrum of the running surface of the wheel, and is the contact filter. means the linearized Hertzian contact spring stiffness, is the vertical rail receptance, and is the radial receptance of the wheel.…”

Section: State-dependent Contact Modelmentioning

confidence: 99%

“…Instead, a set of roughness data of the wheel and the rail in short wavelengths from [15] is used as reference since the values correspond well with the roughness levels and the decaying slopes presented in [13,14] in a region of wavelengths where the two data sets overlap. Using the short wavelength roughness from [15] together with a method to generate surface data from line texture data (see [12]), surface roughness is generated and superimposed on the geometrical shape of the wheel and the rail.…”

Section: Hyo-in Koh and Anders Nordborg / Ijr 7(4) 109-116 2014mentioning

confidence: 99%

See 3 more Smart Citations

Investigation of the Dynamic Properties of Railway Tracks using a Model for Calculation of Generation of Wheel/Rail Noise

Koh¹,

Nordborg²

2014

International Journal of Railway

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For optimization of a low-noise track system, rail vibration and noise radiation needs to be investigated. The main influencing parameters for the noise radiation and the quantitative results of every track system can be obtained using a calculation model of generation and radiation of railway noise. This kind of model includes contact modeling and the calculation model of the dynamic properties of the wheel and the rail. This study used a nonlinear wheel/rail interaction model in the time domain to investigate the excitation of the rolling noise. Wheel/rail response is determined by time integrating Green's function of the rail together with force impulses from the wheel/rail contact. This model and the results of the study can be used for supporting calculation with the conventional model by an addition of the contributions due to nonlinearities to the roughness spectrum.

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“…It can be calculated, according to section 1.2.4, in the time-domain with the rail/wheel simulation program [11], and the nonlinear state-dependent rolling contact model [12].…”

Section: Rail/wheel Contact Force Excitationmentioning

confidence: 99%

Section: State-dependent Contact Modelmentioning

confidence: 99%

Section: State-dependent Contact Modelmentioning

confidence: 99%

Section: Hyo-in Koh and Anders Nordborg / Ijr 7(4) 109-116 2014mentioning

confidence: 99%

See 2 more Smart Citations

Investigation of the Dynamic Properties of Railway Tracks using a Model for Calculation of Generation of Wheel/Rail Noise

Koh¹,

Nordborg²

2014

International Journal of Railway

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“…Xiaolu Cui. et al [5], Oskar E. Lundberg et al [6] and Chao Zou et al [7] researched the vibrations and noise of wheel/rail under different contact states. And the suggestions to reduce the vibration and noise of wheel/rail system are given.…”

Section: Introductionmentioning

confidence: 99%

Thermal and dynamic behaviors of wheel/rail contact system considering thermal-mechanical coupling effects

Wei¹,

Wu²,

Duan³

2018

J. vibroeng.

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In order to research the temperatures and dynamic characteristics of wheel/rail at different creep ratios, a thermal-mechanical coupling model of 3-D wheel/rail-foundation contact system and a new experimental device are introduced. The results indicate the temperatures ascend gradually with the growth of creep ratios, the maximum temperature of wheel and rail surface is respectively 626.1 °C and 514.2 °C. Because of the thermal effects, the accelerations of wheel/rail descend gradually with the rise of creep ratios. The influences of creep ratios on the vertical displacements are not obvious. The maximum absolute vertical displacement of wheel and rail is respectively 1.16 mm and 1.33 mm. And the normal contact force of wheel/rail and the dynamic factor ascend gradually with the rise of braking speeds.

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An Extensive Review of Tribo-Dynamic Modelling for Rolling Element Bearing Condition Monitoring

Zhou,

Chen,

Gong

et al. 2024

Mechanisms and Machine Science

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A nonlinear state-dependent model for vibrations excited by roughness in rolling contacts

Cited by 11 publications

References 20 publications

Investigation of the Dynamic Properties of Railway Tracks using a Model for Calculation of Generation of Wheel/Rail Noise

Investigation of the Dynamic Properties of Railway Tracks using a Model for Calculation of Generation of Wheel/Rail Noise

Thermal and dynamic behaviors of wheel/rail contact system considering thermal-mechanical coupling effects

An Extensive Review of Tribo-Dynamic Modelling for Rolling Element Bearing Condition Monitoring

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