TY - JOUR

T1 - Modelling the impact of structural flexibility of wheelsets and rails on the wheel-rail contact and the wear

AU - Kaiser, Ingo

AU - Poll, Gerhard

AU - Vinolas, Jordi

N1 - Funding Information: Parts of the work, in particular the development of several theoretical basics and their implementation into the computer code, have been carried out by the corresponding author within the project “Next Generation Train” funded by the German Aerospace Center ( DLR ) during his employment at the Institute of System Dynamics and Control at the German Aerospace Center ( DLR ) Oberpfaffenhofen. The support is gratefully acknowledged. Funding Information: Ingo Kaiser studied mechanical engineering at the University of Hannover (Germany) and received his diploma in mechanical engineering in 1996. From 1996 to 2002 he worked at the Institute of Mechanics of the University of Hannover on a project belonging to the priority program “System Dynamics and Long-Time Behaviour of Vehicle, Track and Subgrade” funded by the German Research Council (DFG). From 2002 to 2014 he worked at German Aerospace Center (DLR) at Oberpfaffenhofen near Munich (Germany). His research is focused on the enhancement and refinement of simulating the running behaviour of railway vehicles, especially the modelling of the structural flexibility of wheelsets and rails and the detailed modelling of the rolling contact. Besides his scientific work he was deputy chief of the DLR School Lab Oberpfaffenhofen, which promotes science and engineering among young people. He is member of the editorial board of the International Journal of Railway Technology. Since 2015, he works as a professor for mechanical engineering at the School of Engineering and Architecture at Nebrija University in Madrid (Spain), where he continues his research on the dynamics of railway vehicles and teaches computational modelling of railway vehicles. In 2017, he received his doctoral degree in mechanical engineering from the University of Hannover. Publisher Copyright: © 2020 Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2022/9/15

Y1 - 2022/9/15

N2 - The wear occurring in the wheel-rail contact has a strong impact on the entire railway system consisting of the rolling stock and the infrastructure; essentially, the wear depends on the location of the contact area on the running surfaces and on the stresses acting in the contact area. Some combinations of wheel and rail profiles are known to be very sensitive even to small changes of the relative kinematics of wheel and rail, which can be caused not only by displacements of the wheelset relative to the track, but also by structural deformations of wheelsets and rails. The paper presents a refined vehicle-track model, in which flexible bodies representing the wheelsets and the rails are combined with a rather detailed wheel-rail contact model. It shows the modelling approaches, in particular the integration of the wheel-rail contact into the entire model, and explores the impact of structural deformations on the wheel-rail contact.

AB - The wear occurring in the wheel-rail contact has a strong impact on the entire railway system consisting of the rolling stock and the infrastructure; essentially, the wear depends on the location of the contact area on the running surfaces and on the stresses acting in the contact area. Some combinations of wheel and rail profiles are known to be very sensitive even to small changes of the relative kinematics of wheel and rail, which can be caused not only by displacements of the wheelset relative to the track, but also by structural deformations of wheelsets and rails. The paper presents a refined vehicle-track model, in which flexible bodies representing the wheelsets and the rails are combined with a rather detailed wheel-rail contact model. It shows the modelling approaches, in particular the integration of the wheel-rail contact into the entire model, and explores the impact of structural deformations on the wheel-rail contact.

KW - Coupled vehicle-track system

KW - Flexible rail

KW - Flexible wheelset

KW - Iterative contact model

KW - Non-elliptic contact

KW - Wheel-rail contact

UR - http://www.scopus.com/inward/record.url?scp=85098799911&partnerID=8YFLogxK

U2 - 10.1016/j.wear.2020.203445

DO - 10.1016/j.wear.2020.203445

M3 - Article

AN - SCOPUS:85098799911

VL - 504-505

JO - Wear

JF - Wear

SN - 0043-1648

M1 - 203445

ER -