Accurate modeling of cam mechanism is built using PRO/E ,and it is introduced into ANSYS/LS-DYNA using the seamless connection between PRO/E and ANSYS . The stress , strain distribution of cam mechanism at every moment and the trajectory of push-rod can obtained using finite element dynamic analysis software ANSYS/LS-DYNA ,to verify whether the cam mechanism could meet the design requirements .%利用PRO/E对凸轮机构进行精确建模，采用PRO/E和ANSYS的无缝连接，将模型导入ANSYS/LS-DYNA中。利用有限元动力分析软件ANSYS/LS-DYNA 得到凸轮机构在每一时刻的应力、应变等分布情况和推杆的位移变化规律，从而验证凸轮机构是否满足设计要求。
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