工程化复合材料结构优化设计方法

复合材料结构的可设计性带来大量设计变量,单靠传统方法难以实现结构优化,复合材料结构优化的铺层优化设计也是关键问题之一。从工程实际出发,探讨具有工程操作性的复合材料结构优化设计方法,形成 从结构布置优化到初始尺寸优化,再到详细铺层优化的三级优化设计方法,并在设计过程中加入符合复合材料 工艺要求的制造性约束;以某飞机复合材料垂尾翼盒结构设计为例,采用该方法对其进行优化设计。结果表明:本文提出的三级优化设计方法是适用于航空复合材料结构优化设计的一种通用方法,可降低结构质量、缩短研制周期。

Engineering Composite Structure Optimization Design Method

The design ability of composite structures brings large-scale design variables, which makes it difficult to optimize structures by traditional methods, the optimization design of composite laminates is also one of the key problems. From the perspective of engineering design, multiple models are arranged for laying optimization, based on the design of composite super-ply variable definition, considering the overall engineering design constraints to sizing optimization, automatic strength checking process with the laying sequence library to optimize the laying sequence, forming a set of optimization design method of composite structure with three levels of laying optimization, initial size optimization and detailed laying optimization. Taking the structural design of composite vertical tail box of an aircraft as an example, this method is used to optimize the design of composite vertical tai lbox. The results show that: the three-level optimization design method proposed in this paper is a general method applicable to the optimization design of aeronautical composite structures. It reduces the weight of the structure and shortens the development cycle.