复合材料层压板结构铺层设计的三级优化方法
Three-Level Optimization Method for Lay up Design of Composite Laminate Structures
白皓 1商伟辉 1邹志伟 1李玉龙 1董志武 1任杭1
作者信息
- 1. 长春长光宇航复合材料有限公司,长春 130000
- 折叠
摘要
针对复合材料层压板结构的铺层设计,提出了一种三级优化方法.第一级,进行结构区域划分并建立初始层压板,通过刚度简化消除初始铺层顺序对优化设计的影响,以强度、刚度、稳定性等约束下重量最小为目标,优化各区域的铺层厚度.第二级,为满足相邻区域铺层连续的工艺要求,采用共享铺层组进行铺层整合,并优化各铺层组内的铺层顺序,进一步增大结构刚度.第三级,优化确定所有共享铺层组中每个单一铺层的保留或去除,在强度、刚度、稳定性等约束下,得到结构最优重量.算例表明,本文所提铺层设计的三级优化方法具有一定的有效性,且对复合材料机翼这样的复杂结构具有良好的适用性.
Abstract
n view of the layup design of composite laminates,a three-level optimization method is proposed.Firstly,divide a structure into numbers of regions and establish initial laminates for these regions.Eliminate the effect of initial stacking sequence for optimization design by simplifying stiffness of the initial laminates,then opti-mize the thickness of them,to obtain the minimum weight of the structure,which meet the conditions of strength,stiffness and stability.Secondly,in order to meet the technological requirement that layers between adja-cent regions should be continuous,using sets of shared layers for layers integration,then optimize the stacking se-quence of each set of shared layers,to further increase the structure stiffness.Thirdly,for every layer in all sets of shared layers,deter-mine if it should be kept or removed through optimizing,finally obtain the optimal weight of the structure,which meet the conditions of strength,stiffness and stability.The examples show that the three-level optimization method for layups design proposed in this paper is effective,and applicable to complex structure such as wing.
关键词
复合材料层压板/铺层设计/刚度简化/共享铺层组/铺层顺序Key words
composite laminates/layup design/simplifying stiffness/sets of shared layers/stacking sequence引用本文复制引用
出版年
2024
NETL
NSTL
万方数据