소형버스의 동역학 해석을 위한 판스프링 모델링기법 개발

A leaf spring plays an important role in a passenger bus. Since characteristic of a leaf spring has a hysteresis behavior, a modelling technique for a leaf spring is an imPortant issue for a passenger bus analysis. In this paper, modelling technique for a leaf spring is presented. First, non-linear FEM model of a leaf spring is constructed then it is used to make an approximated model to be used in dynamic analysis. The modelling procedure is explained in step by step approach. Then. this model is applied to mini-bus dynamic analysis with flexible body and non-linear dynamic force element and the results are compared with test data.