철도차량 종단골조의 위상최적설계

초록

In this paper, topology optimization method is applied to the rolling stock end frame design. Four loading conditions such as center sill compression, cant rail compression, window sill compression and vertical load are considered. For each load and combined total loads, compliance or linear sum of compliance is minimized to find the stiffest end frame topology. Based on the topology design result, new underframe structure (COMER shape) is proposed. The static strength and the dynamic crash behavior of the new underframe design are compared with those of the conventional design.