非对称的结构正则方程的分块求解策略及程序实现

Tactics of subpart solution for non symmetrical structural canonical equations and its programming realization

对于结构与介质耦合分析及非关联的弹塑性分析，常导致非对称的结构正则方程。直接求解非对称的结构正则方程，由于内存有限，会限制一些超大型结构的求解。本文针对非对称结构正则方程，详述了分块求解的策略，并在ＪＩＧＦＥＸ程序系统中成功实现。

For the coupling analysis of structure media and non correlated elastic plastic stress strain relation, non symmetrical structural canonical matrix is often obtained. Traditionally, this matrix is changed to symmetrical matrix by the symmetrization method and error is caused inevitably. With the development of computer technique, direct solution for non symmetrical structural canonical equations is adopted. Because of the limit of computer memory, many complicated and big structural can not be solved. This paper presents a subpart solution tactics for non symmetrical structural canonical equations. Its programming is realized in JIGFEX programming system. The solving capability and applying scope of this system are enhanced greatly.