철도차량 대차 요템퍼 브라겟 용접부 최고온도도달 기반 열탄소성 해석

초록

Yaw damper bracket is one of the important part to joint carbody and bogie. In order to estimate fatigue behavior on this bracket, various loading conditions under the vehicle service condition as well as boundary conditions must be considered. In this study, thermal elasto-plastic analysis is performed to calculate its residual stress generated by welding process. The results from thermal elasto-plastic analysis must be considered its final stress after hardening process could be applied to evaluate to fatigue life assessment under the field test.