FINITE ELEMENT ANALYSIS METHOD FOR ANISOTROPIC MEMBER

摘要

PROBLEM TO BE SOLVED: To provide a finite element analysis method for an anisotropic member to improve analysis accuracy in consideration of anisotropy and nonlinearity, especially a large difference of physical values between the extension side and the compression side of the member using a strain energy function.;SOLUTION: The finite element analysis method for the anisotropic member to reflect the anisotropy by the strain energy function consists of an analysis model creation step, an analysis execution step, and an output step. The analysis execution step includes a stiffness matrix creation step and a stress calculation step, and in the stiffness matrix creation step, two strain energy functions having different coefficients on the extension side and the compression side are provided and the strain energy function corresponding to the extension side or the compression side out of the two strain energy functions is applied.;COPYRIGHT: (C)2009,JPO&INPIT