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基于力法的矩阵平衡方法与变量无关的特性,本文提出了一种减缩基底的力法重分析及近似重分析技术。因为实际结构的静不定度一般都比较低,这些重分析技术显著提高了结构优化设计过程的计算效率。用几个桁架结构为例来说明所提出方法的原理与效用;重分析及近似重分析所用的时间仅分别为原分析时间的20～30％和8～15％。
Based on the force-method-free matrix balance method and the independence of variables, this paper proposes a force-refactoring analysis and approximate reanalysis technique for the reduced basement. Because the static uncertainty of the actual structure is generally low, these reanalysis techniques significantly improve the computational efficiency of the structural optimization design process. Several truss structures are used as an example to illustrate the principle and utility of the proposed method; the time used for reanalysis and approximate reanalysis is only 20 to 30% and 8 to 15% of the original analysis time, respectively.