摘要
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 has been received a wide application in aerospace structures, thus the reinforce ment of its cutout has very much been concerned. Composite laminates with large opening under three different load cases： tension, shear and compress are investigated. The optimization design of different types of reinforce ment with different materials is also conducted. The parameters of reinforced structure are optimized to satisfy the objective weight function, and the multi-level optimization method is adopted during the optimization process. The weight characteristics of reinforced structure are also compared and analyzed. The results show that under different load cases, compared with bolt connection reinforcement and co-curing reinforcement, inter calation reinforcement is better with the minimum weight increase.
出处
《航空工程进展》
2013年第2期193-198,共6页
Advances in Aeronautical Science and Engineering
关键词
复合材料
层合板
开口补强
优化
多级优化
响应面
composite
laminates
reinforcement
optimization
multi-level optimization
response surface
