摘要
以结构系统的可靠度作为结构优化设计的控制参数．用分枝限界法判认主要失效模式．用ＰＮＥＴ法计算结构系统的可靠度．导出了平面框架结构系统可靠度的敏度分析表达式采用基于约束函数一阶泰劳展开的序列近似规划及非线性规划的对偶理论，求解了平面框架结构系统可靠度为约束的最小重量设计问题若干例题的计算结果表明。
In this paper, the reliability of structural system is regarded as the control parameter for the structural optimization design. The significant failure modes are identified by using the branchand bound method. The reliability of structural system is evaluated by PNET method. The expression of sensitivity analysis for the plane frame structural system reliability is derived. The optimum design problem with the constraint of structural system reliability is solved by using the sequential approximate programming technique based on the first order Taylor series expansion of constraint function and dual theory of nonlinear programming method. Several examples are evaluated, and the results demonstrate that the method presented in the paper is effective.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
1996年第3期111-119,共9页
Journal of Harbin Engineering University
关键词
平面框架
结构系统
优化设计
框架
可靠性
plane frame
structural system
reliability
optimization design
