稳健性描述指标与稳健性拓扑优化模型。稳健性设计要求同时考虑结构的平均性能和结构不确定性参数引起的结构性能偏移。为了描述稳健性设计的要求以及构件优化模型，首先针对以结构柔顺度期望及其标准差的加权和形式的目标函数，研究加权系数的选取规则，提出了一个称为“柔顺度的类变异系数”的合适的稳健性描述指标。该指标具有明确的物理意义而更具合理性。(Robust descr iption index and robust topology optimization model. The robustness design requires both the average performance of the structure and the structural performance offset caused by the uncertain parameters of the structure. In order to describe the robustness of the design requirements and component optimization model, according to the weighted objective function in the form of structural flexibility and expectation and standard deviation of weighted coefficient selection rules, is proposed, called a "class variation coefficient" flexibility suitable steady descr iption index. The index has a clear physical meaning and more reasonable.)