抄録
In this investigation, a numerical procedure of multiple wheel/rail contacts for evaluating the curving performance and flange climb derailments of railroad vehicles is developed using constraint contact and elastic contact formulation. In the proposed approach, the location of flange contact is determined by using iterative contact serch with an initial estimate provided by 2-point contact table. This leads to a systematic and accurate prediction of contact points for severe flange contact scenarios encountered in curve negotiations on a small-radius curved track. It is demonstrated by several numerical examples that multiple wheel/rail contacts and the flange climb motion can be accurately predicted using a proposed approach. Furthermore, numerical results obtained using the prposed approach are in good agreements with those of a general-purpose multibody dynamics code, SIMPACK^<TM>.
