摘要
当结构优化设计系统规模很大时，用分解法作优化设计的最大困难是怎样解决子问题之间的耦合，这也是当前国内外尚未彻底解决的难题，本文以位移敏度分析的拟荷载法为基础，构造了一个位移耦合矩阵，这个耦合矩阵不仅定性地反映了各子问题之间耦合的强弱，也定量地给出了子问题之间的耦合值，从而为解耦后的子问题优化提供了一个可以操作的环境。二个空间析架的例题证明了这一对策的有效性和实用性。
While the system of axtructural optimum design is very large,the most difficulty is howto deal with the couplings in all sub-problems,which is a knotty problem in this area in the woridas well.A displacement coupling matrix has been formed,based on the quasi-load method.Thecoupling matrix could not only indicate how much the coupling relationship will be,but also presenthow many their values will be,This procedure is able to offer an easier operating situation with eachsub-problem.Two examples of trusses in 3-D have been given to demonstrate its effectivenessand realization.
出处
《大连铁道学院学报》
1995年第1期18-23,共6页
Journal of Dalian Railway Institute
基金
中国科学院现代制造CAD/CAM技术开放实验室资助项目
关键词
因子分解法
矩阵法分析
解耦
结构设计
最佳化
structural optimization
factor decornposition method
matrix analysis/decoupling
