摘要
以结构可靠性分析和结构优化理论成果为基础,推导得到匀质杆件结构在特定失效模式下的功能函数,给出这一特定失效模式下结构可靠度指标的计算方法.将结构的可靠度指标作为结构优化设计的控制参数,得出优化问题的数学模型,实现杆件结构系统基于可靠度指标的优化设计.通过算例证实了所提出方法用于刚架的正确性与一般通用性.
Based on the structure reliability analysis and results of structural optimization theory, the performance function and computative method of reliability index of the homogeneous truss structure under certain failure mode were derived and given, respectively. A mathematical model for optimization with the reliability index as the control parameter for structural optimization design was obtained, so that the reliability index-based optimization design of trussed structure was realized. The validity and general applicability of the method proposed were verified with an example of a rigid frame.
出处
《兰州理工大学学报》
CAS
北大核心
2008年第3期135-138,共4页
Journal of Lanzhou University of Technology
关键词
杆件结构
功能函数
可靠度
优化设计
truss structure
performance function
reliability
optimum design
