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复合材料层合板广泛应用于航空航天结构,其开口补强问题一直备受关注。以含大开口的复合材料层合板为研究对象,针对拉伸、剪切、压缩三种不同工况,分别采用不同材料和不同补强型式进行补强结构优化设计。以补强结构重量为目标函数,采用多级优化方法,对补强结构参数进行优化设计。对不同补强型式,不同补强材料下的重量特性进行对比分析。结果表明:在不同工况下,相较于螺接补强和共固化补强,插层补强型式较优,结构重量增加较小。
Composite laminates are widely used in aerospace structures and their open reinforcement issues have drawn much attention. Taking the composite lamination plate with large opening as the research object, three different conditions of tensile, shear and compression were adopted to optimize the reinforced structure with different materials and different reinforcing patterns respectively. In order to enhance the weight of the structure as the objective function, multi-level optimization method is used to optimize the structural parameters of the reinforced structure. The weight characteristics under different reinforcing types and different reinforcing materials are compared and analyzed. The results show that under different working conditions, the reinforcement type of intercalation is better and the weight of structure is smaller than that of bolting and co-curing.