Abstract:

Combining with the hybrid stress finite element theory,based on 2-order/4-order 0 scale wavelet functions,a type of shape function is presented and the process of computer is reduced. The shape function can overcome the difficulty of unknown number increase exponentially with 2 to the power of n. In order to verify the correctness of current formulation,the median displacement and stress of 2 -D elastic rectangular plate under uniformly distributed load is analyzed with different meshes. With the same mesh,the results of 4-order wavelet function are more accurate than that of 2-order wavelet function.

Key words: finite element, hybrid stress element, wavelet function, shape function