Rail wear is one of the phenomena caused by rolling contact of rail and wheel. Situation of rail wear changes with complexity because the contact of rail and wheel changes gradually according to the running condition of vehicles and track geometry condition. Therefore, it is important to predict the wear profile of rail continuously. However, predicting the change of rail profile due to wear has been mostly examined based on one contact condition of rail and wheel. SIMPACK, which is one of the Multi-Body Dynamics (MBD) software is very useful to analyze vehicle dynamics, contact conditions of rail and wheel and so on. In this research, the authors constructed a model for predicting of worn profile of rail incorporated in SIMPACK and carried out the analysis under the several conditions. Furthermore, we examined about the influential factor of wear of rail.2・4 摩耗則 車輪とレールの転がり接触による摩耗は，主に凝着摩耗であると考えられる．凝着摩耗を表す摩耗則はこれま でにいくつか提案 (10-12) されているが，本研究ではそのうちの一つである，Archard (12) の摩耗則を適用した．Archard の摩耗則は式(3)で与えられる．

No abstract