论文部分内容阅读
主要探讨各向异性弹塑性材料的有限变形计算 ,在乘法分解的基础上提出了一种适用于正交各向异性弹塑性材料考虑到有限变形的有限元计算方法。并利用按本法编制的程序对正交各向异性材料圆棒试样的拉伸大应变颈缩过程进行了数值模拟 ,得到了各向异性颈缩导致颈部椭圆变形的结果 ,初步证实了本方法的合理性
In this paper, the finite deformation calculation of anisotropic elastic-plastic materials is mainly discussed. Based on the multiplication decomposition, a finite element method suitable for finite deformation of orthotropic elastic-plastic materials is proposed. And by using the program compiled according to this law, the numerical simulation of large strain-induced neck-in process of orthotropic materials was carried out. The results of the elliptical deformation of neck caused by the anisotropic neck-in were obtained. The rationality of this method