结构连续变更第二定理及其应用

The Second Theorem of Structure Continual Variation and its Application

从结构连续变更定理出发提出了关于结构变更过程中位移计算的结构连续变更第二定理，用数值分析与递推公式相结合的方法实现对结构连续变更中变形极限状态函数的连续生成，避免了结构总刚度阵重新组装反复求其逆矩阵。

On the basis of the theorem of structure continual variation of truss structure, the second theorem of that for evaluating the displacement during the variation of the structure was derived. The continual generation of limit state function was realized by using the method of numeric analysis and recurrence formula. Repeated assembly of the global stiffness matrix and repeated inverse operation of the matrix was avoided, and the calculation efficiency was improved obviously.