基于参数化建模的包带式星箭连接结构优化设计

采用MSC.Patran参数化建模和遗传算法进行包带式星箭连接结构优化设计。首先给出了包带连接结构二维轴对称模型优化设计过程中涉及的V形卡块刚度等效、包带预紧力模拟和载荷施加方法，以及强度和刚度约束条件、优化目标等内容；然后以某直径为3m的包带连接结构为例进行了优化设计，并分析了对接框内延伸段长度和端头高度对应力及变形的影响；最后建立三维有限元模型进行静力分析。结果表明（1）该方法适用于包带连接结构的优化设计；（2）增加对接框内延伸段长度和端头高度能够提高整体连接刚度；（3）三维有限元模型与轴对称模型计算结果一致，验证了轴对称模型分析方法的正确性，以及V形卡块等效和预紧力模拟方法的有效性。

Optimizing design of clamp band joint based on parameter modeling method

A new application based on the parameter modeling method of MSC.Patran and generation algorithm was proposed to design the clamp band joint. First, finite element techniques for 2-dimension axisymmetric analysis of clamp band joints were developed, including the modeling of V-clamp, strap pre-tension and loads, and the optimizing constrains and objectives were also introduced. Then a clamp band joint with the diameter being 3m was designed via the presented method. Finally, a 3-dimension finite element model of the designed clamp band joint was established and analyzed. It indicates that: (1) the method is applicable to the design of clamp band joints; (2) the connective stiffness is strengthened by increasing the length and height of the inner ring of the interface rings; (3) the modeling methods are proved to be valid by the agreements of the finite element analysis results of 2-D model and 3-D model.