非概率可靠性, 区间模型, 结构优化, 可靠性指标, 复形调优算法

According to the fluctuating factors of the target components’ structural parameters and the interval characterization of the material properties, this paper adopted reliability analysis and structural optimization method, and analyzed the control parameters, material strength and load distribution considering uncertainty of structural parameters of the target components.The reliability index with structural failure probability was constructed by using non-probabilistic interval reliability analysis. And combined with N-dimensional complex optimal algorithm with interval constraints, the optimal results were obtained. To billet slings clamp plate, for example, this method was proved to be practical and effective. And it is a new way of the reliability-based design.