飞机复合材料气密舱门布局和铺层的两级优化设计  

Two-level optimization on layout and ply for composite airtight port of airplane

作　　者：王帅培 高行山[1] 甘建[2] 王富生[1] 岳珠峰[1] 

机构地区：[1]西北工业大学,西安710129 [2]成都飞机设计研究所,成都610041

出　　处：《应用力学学报》2014年第3期457-462,496-497,共6页Chinese Journal of Applied Mechanics

基　　金：国家自然科学基金(51210008);高等学校学科创新引智计划(B07050)

摘　　要：针对飞机复合材料气密舱门的轻量化设计,提出了一种两级优化方法。第一级优化方法以结构应变能最小为目标,对横向加强筋的相对位置进行布局优化;在第一级优化结果的基础上,第二级优化方法借助于等效弯曲刚度法和遗传算法,以舱门强度、刚度和复合材料失效准则为约束条件,进行内外蒙皮、环框和横向加强筋的铺层优化;通过两级之间的迭代,最终得到结构布局和铺层的最优方案。对某个型号飞机舱门的优化结果表明:布局优化后舱门最大位移和最大应力分别降低了22.7%和11.2%,舱门刚度和强度得到了明显的改善;铺层优化后舱门质量降低了7.69%。本文研究为复合材料气密舱门实现结构减重提供了一种有效的方法。A two-level optimization method for lightweight design of composite airtight port of airplane is proposed. The layout optimization of transverse stiffeners is performed to minimize the strain energy in the first level. Based on the results of the first level optimization, the ply optimization for the inner skin, outer skin, frame and transverse stiffeners is carried out subjected to intensity, rigidity and composite failure criteria constraints inthe second level by means of equivalent bending stiffness method and genetic algorithm. The optimal design scheme of the structural layout and ply is achieved by the iteration between the first and second level. A practical airplane port is utilized as an example. The maximum displacement and maximum stress are reduced by 22.7% and 11.2% respectively after layout optimization, the intensity and rigidity of the port are improved obviously. The weight of the port is reduced by 7.69% after ply optimization. This paper provides an effective method for the lightweight design of the composite airtight port.

关 键 词：飞机复合材料气密舱门 轻量化设计 布局优化 铺层优化 两级优化方法 

分 类 号：V223.3[航空宇航科学与技术—飞行器设计]