摘要
在建立复合材料加筋壁板刚度等效模型的基础上,总结了加筋板局部、总体失稳和筋条扭转失稳的理论计算方法,并将三类屈曲的临界屈曲载荷与设计载荷相等作为优化设计准则,得到了一种适用于不同筋条截面形状的复合材料加筋壁板结构布局快速优化设计方法。将该方法的优化结果与有限元分析结果进行对比,结果表明,该算法用于复合材料加筋壁板优化设计具有较高的准确性和效率,能够较好地满足工程需求。
Based on the equivalent stiffness model of stiffened composite panels, the theoretical calculation method of local and overall buckling and torsion buckling of stiffened plates was summarized. Adopting critical buckling load of the three kinds of buckling equal to the design load as the optimal design criterion, a rapid optimization design method for the composite stiffened panel structure with different section shapes was obtained. The optimization results of the method were compared with the results of finite element analysis. The results show that this algorithm has high accuracy for the optimization design of composite stiffened panels, and can meet the engineering requirements better.
出处
《航空科学技术》
2017年第12期38-42,共5页
Aeronautical Science & Technology
关键词
复合材料
加筋壁板
刚度等效
屈曲
优化设计
composite
stiffened panel
stiffness equivalent
buckling
optimization
