Abstract：Contact system of beam structure containing Hertzian contact is widely applied in hermetically sealed electromagnetic relay, the dynamic characteristics of which is considered to be the main cause of failure in mechanical environment. Combined with finite element method, Hertzian contact condition and Newmark β algorithm, the program for analyzing the nonlinear beam structure is complied. The impacts of Hertzian contact condition were investigated by the comparison of transient response between MSC.Patran/Nastran and the program. In order to validate the method, the shock experiment over the practical model was conducted, and the results show good consistency with the calculation.
2009, Vol. 28 
