누적 충격 시 범퍼 백빔의 변형 해석에 관한 연구

This paper deals with numerical analysis technique which can be applied in the prediction of front end back beam deformation behavior during low speed crash event(CMVSS215). Results of first impact simulation which is deformed shape, thickness, stress tensor and strain tensors are coupled for initial condition of next impact simulation. To consider the springback between each simulation, we carried out springback analysis with implicite finite element analysis code in PAM-STAMP and confirmed whether it will be worthwhile. Also, we carried out crash simulation considered successive impact with PAM-CRASH. The validity of coupled crash analysis has been examined through comparison with test data, consequently indicates good availability.