结构承载能力分析中的迭代法近似重分析

Simple Iteration Reanalysis Technique in Load-Carrying Capacity Analysis of Structures

将简单迭代法近似重分析技术用于复合材料结构承载能力分析之中，将简单迭代法收敛本身作为步长限制之一引入带步长限制的变步长增量载荷法，所得分析格式节约机时５０％以上。存贮单元增加很少而结果却与完整分析一致。还给出了在结构重分析中简单迭代法收敛的一个必要条件。从结构力学角度来看．剩余结构不能出现运动自由度。

As a structural reanalysis technique, the simple iteration method is applied to load-carrying capacity analysis of composite structures. The convergence of simple iteration itself is taken as one of steplimits in the nonlinear iteration to find maximal load-factor. More than a half of the computational time may be saved while only few extra memory units are needed with the same results. A necessary condition for simple iteration convergence in structural reanalysis is proposed. From the structural point of view, the condition means the remaining structure must not have the kinematic degree of freedom.