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研究不确定荷载下应力约束拓扑优化结构.不确定荷载用区间变量表示,将不确定性区间荷载用有限个可能工况组合表示,从而将不确定性荷载问题转化为多工况问题.采用基于类桁架材料模型的多工况应力约束拓扑优化方法,求解不确定荷载作用下的拓扑优化结构.推导两杆结构的解析解,通过解析解验证了数值算例方法的有效性.分析比较了几个不确定荷载与确定性荷载作用下拓扑优化结构.
The structure of stress-constrained topology optimization under uncertain load is studied, and the uncertain load is represented by the interval variable, which is expressed by a finite number of possible conditions, so that the uncertainty load problem can be transformed into the multi-condition problem. The topological optimization of multi-condition stress-constrained truss model is solved by the solution of the topological optimization structure under uncertain load. The analytical solution of two-bar structure is deduced and the effectiveness of the numerical example method is verified by analytic solution. Topology Optimization under Uncertain and Definite Loadings.