关键词: 结合部；接触刚度；罚函数；有限元

Abstract:

A penalty function method of finite element was proposed for nonlinear contact stiffness of joint. The stiffness of joint was obtained by experiment. In finite element analysis related to contact, the stiffness was introduced into contact analysis of joint by penalty factor of penalty function method. In this method, stiffness was expressed as penalty factor, which possessed specific engineering signification. The process of joint analysis was given by penalty function and then an example was used to validate the method . 

Key words: joint, contact stiffness, penalty function, finite element