Wheel-rail contact model for railway vehicle-structure interaction applications:development and validation  

作　　者：P.A.Montenegro R.Calçada 

机构地区：[1]CONSTRUCT-LESE,Faculty of Engineering,University of Porto,Rua Dr.Roberto Frias S/N,4200-465 Porto,Portugal

出　　处：《Railway Engineering Science》2023年第3期181-206,共26页铁道工程科学（英文版）

基　　金：Base Funding-UIDB/04708/2020 and Programmatic Funding-UIDP/04708/2020 of the CONSTRUCT-Instituto de I&D em Estruturas e Construções-funded by national funds through the FCT/MCTES(PIDDAC);Grant no.2020.00305.CEECIND from the Stimulus of Scientific Employment,Individual Support(CEECIND)-3rd Edition provided by“FCT-Fundação para a Ciência e Tecnologia.”。

摘　　要：An enhancement in the wheel-rail contact model used in a nonlinear vehicle-structure interaction(VSI)methodology for railway applications is presented,in which the detection of the contact points between wheel and rail in the concave region of the thread-flange transition is implemented in a simplified way.After presenting the enhanced formulation,the model is validated with two numerical applications(namely,the Manchester Benchmarks and a hunting stability problem of a sus-pended wheelset),and one experimental test performed in a test rig from the Railway Technical Research Institute(RTRI)in Japan.Given its finite element(FE)nature,and contrary to most of the vehicle multibody dynamic commercial software that cannot account for the infrastructure flexibility,the proposed VSI model can be easily used in the study of train-bridge systems with any degree of complexity.The validation presented in this work proves the accuracy of the proposed model,making it a suitable tool for dealing with different railway dynamic applications,such as the study of bridge dynamics,train running safety under different scenarios(namely,earthquakes and crosswinds,among others),and passenger riding comfort.

关 键 词：Vehicle-structure interaction Wheel-rail contact Manchester Benchmarks Thread-flange transition Dynamic analysis Model validation 

分 类 号：U211.5[交通运输工程—道路与铁道工程]