摘要
以复合材料蜂窝夹层板结构作为研究对象,建立了多工况优化模型,对众多的材料设计变量进行必要的取舍,通过优化分析确定复合材料蜂窝夹层板面板各分层的厚度以及蜂窝芯层的厚度等,使结构满足相应的频率约束、屈曲约束,以及强度约束、位移约束和尺寸限制等,同时达到结构的重量最轻。采用序列二次规划法对某卫星的承力筒结构进行了优化设计,优化结果表明:在满足其振动特性以及静力学特性的条件下,复合材料蜂窝承力筒的各面板层厚度以及蜂窝芯层的厚度均有所减小,减重效果显著,较好地实现了复合材料蜂窝夹层板结构的多工况优化设计。
The optimum design of composite honeycomb sandwich panels subjected to multiple cases of load is studied. It is very desirable to design these structures for minimum weight to insure their most effective use. The appropriate optimum model is established with the design variables (face plate thickness, core plate thickness) and subjected to strength, displacements, buckling, frequency and sizes constraints. The optimum design of the supporting cylinder subjected to multiple cases of load on the satellite is performed via sequential quadratic programming. The optimum face plate thickness and core plate thickness are much thinner than before with the decreased structural mass. The results of the design of composite honeycomb sandwich panels are given to demonstrate the feasibility and applications of the proposed optimum model.
出处
《振动与冲击》
EI
CSCD
北大核心
2005年第3期117-119,i011,共4页
Journal of Vibration and Shock
