复合材料蜂窝夹层进气道结构优化设计方法

Optimal Design of Composite Honeycomb Sandwich Inlet Structure

研究了一种以全局响应面算法为基础的复合材料蜂窝夹层结构进气道优化设计技术。该技术以复合材料蜂窝夹层进气道结构为研究对象,以结构重量最轻为目标,结合工程实际生产工艺和复合材料结构设计一般原则,使面板各方向角铺层厚度和蜂窝芯材厚度均选用离散变量,同时约束复合材料蜂窝夹层结构的各种失效模式以及进气道工作环境的频率需求。最后通过算例验证了此优化设计方法的可行性。

This paper studies an optimal design technique of composite honeycomb sandwich inlet structure based on the global response surface algorithm.Taking composite honeycomb sandwich inlet structure as the research object,the technique aims to the lightest weight of structure.Based on the production process of actual engineering and the general principles of composite structure design,the discrete variables are selected for the layer thickness of different ply direction angles and the thickness of honeycomb core.Various failure modes of composite honeycomb sandwich structure as well as the frequency requirements of the inlet working environment are constrained.Finally,a numerical example verifies the feasibility of the proposed method.