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首先回顾了基于可靠性的结构设计方法并对其进行了简要的评述;其次介绍了目前正处于热点的大系统设计方法,并提出了应用大系统方法进行大型结构可靠性设计的策略.该策略的主要思路是从结构方案阶段即考虑结构可靠度指标及重量指标的最优分配.一个大型结构可以分解成一系列子系统,而该系统中的每一个又可以分解成一系列二级子系统,直至最基本的子系统.建议对于大型复杂结构,最基本的子系统并非结构元件,而应是能用有限元模型进行基于可靠性优化设计的子结构.
First of all, the structural design method based on reliability is reviewed and briefly reviewed. Secondly, the design method of large-scale system which is currently in hot spot is introduced. The strategy of large-scale structural reliability design using large-scale system is proposed. The main idea of this strategy is to consider the optimal allocation of structural reliability index and weight index from the structural scheme stage. A large structure can be broken down into a series of subsystems, and each of the systems can be decomposed into a series of secondary subsystems, up to the most basic subsystems. Recommendations For large complex structures, the most basic subsystem is not a structural element, but rather a substructure that can be optimally based on reliability using finite element models.