The effect of dynamic rail roll on the wheel–rail contact conditions

Bezin, Yann; Iwnicki, Simon; Cavalletti, M.

doi:10.1080/00423110701882348

Cited by 18 publications

(12 citation statements)

References 2 publications

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“…It might be important to consider worn rail profiles too. An additional effect which modifies the wheel-rail contact conditions is the effect of rail roll due to lateral forces [117].…”

Section: Track Models For Use In Rail Vehicle Dynamics Simulationmentioning

confidence: 99%

Modelling of suspension components in a rail vehicle dynamics context

Bruni

Viñolas

Berg

et al. 2011

Vehicle System Dynamics

210

123

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Suspension components play key roles in the running behaviour of rail vehicles, and therefore, mathematical models of suspension components are essential ingredients of railway vehicle multi-body models. The aims of this paper are to review existing models for railway vehicle suspension components and their use for railway vehicle dynamics multi-body simulations, to describe how model parameters can be defined and to discuss the required level of detail of component models in view of the accuracy expected from the overall simulation model. This paper also addresses track models in use for railway vehicle dynamics simulations, recognising their relevance as an indispensable component of the system simulation model. Finally, this paper reviews methods presently in use for the checking and validation of the simulation model.

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“…It might be important to consider worn rail profiles too. An additional effect which modifies the wheel-rail contact conditions is the effect of rail roll due to lateral forces [117].…”

Section: Track Models For Use In Rail Vehicle Dynamics Simulationmentioning

confidence: 99%

Modelling of suspension components in a rail vehicle dynamics context

Bruni

Viñolas

Berg

et al. 2011

Vehicle System Dynamics

210

123

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“…Several modelling methods can be applied and in the course of the last decade new demands emerged in the analysis of wheel-rail contact. They are mainly connected with the reduction of costs of maintenance, technical diagnostics of the track and of railway vehicles, and elimination of negative effects on the environment [1,3,5].…”

Section: Dynamic Model Of Wheel-rail Contactsmentioning

confidence: 99%

The Time Domain Analysis of Interactions in the Wheel – Rail Contacts Due to Discontinuous Time Periodic Loads

Trzaska¹,

Trzaska²

2015

Journal of KONES. Powertrain and Transport

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In this paper, we present Fourier series less approaches for determining the energy produced by discontinuous time periodic forces in the wheel-rail contacts of the railway track systems. The vehicle system model used in this study consists of a quarter car supported on a bogie, while the side frame is supported on two wheel sets. The main advantage of the presented method is the total elimination of frequency analysis, which in effect introduces important simplifications in the identification of the energetic effects in the contact. Fundamental properties of contact displacements of the rail surface have been considered on the basis of the newly established method. The contact zone between railway wheels and the rail surfaces made of bulk materials is perceived as strong enough to resist the normal (vertical) forces introduced by heavy loads and the dynamic response induced by track and wheel irregularities. The analysis is carried out for a wheel running on an elastic rail rested on sleepers arranged on completely rigid foundation. The established model of the wheel-rail contact dynamics has been applied to that same roll plane, but with taking into account a nonlinear characteristic of the sleeper with respect to the ground. Attention then is focused completely on the modelling of the energy absorbed by the rail. The applied method employs the energy state variables as time functions leading to determine the susceptibility of a given contact on the strength induced by the rail roll.

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“…Researchers and developers constantly strive to enhance the contact algorithms used in railway vehicle dynamics software tools in order to increase the levels of detail and accuracy for predicting contact conditions between wheels and rails [23]. The existing calculation methods of wheel-rail contact point geometry relationships rely on modules of commercial software, such as SIMPACK, ADAMS, VAMPIRE, etc.…”

Section: Introductionmentioning

confidence: 99%