基于屈曲稳定性的复合材料铺层库优化设计  

Optimization Design of the Composite Layup Library Base on Buckling

作　　者：徐荣章 朱胜利 余明 李咪咪 Xu Rongzhang;Zhu Shengli;Yu Ming;Li Mimi(AVIC The First Aircraft Institute,Xi’an 710089,China)

机构地区：[1]航空工业第一飞机设计研究院,陕西西安710089

出　　处：《航空科学技术》2023年第6期26-34,共9页Aeronautical Science & Technology

基　　金：国家重点研发计划(2021YFF0500100)。

摘　　要：为了得到能便于复合材料结构优化设计同时满足制造约束的复合材料层压板铺层库,本文提出一种基于屈曲稳定性的复合材料层压板铺层库设计方法。首先,独立设计铺层角度数量表,便于多种铺层比例的快速移植和交叉融合;其次,以四进制方式对铺层顺序编码,遍寻满足约束要求的铺层顺序,确定核心铺层组范围,设计稳定性综合评价指标,优化核心铺层组铺层顺序,基于核心层组边界向上和向下逐层扩展,合并得到整个设计空间的复合材料层压板铺层库;最后,分析层压板折算刚度系数推导结果,给出铺层库均匀性调整方法。与手动调试铺层库相比,通过本文方法设计的铺层库临界失稳应力普遍提高10%以上,均匀性调整后的临界失稳应力依然提高5%以上。In order to obtain the composite layup library that can facilitate the optimal design of composite structures while meeting manufacturing constraints,a method dealing with composite laminate layup library base on buckling was proposed.Firstly,a table of layup angle was designed,which will be convenient for fast migration and cross fusion with each ration of layup angle.Secondly,the layup sequence was encoded by quaternary.All of layup sequence meted constraint requirement were computed.The range of core laminate was determined by a comprehensive index of buckling was defined.The layup sequence of core laminate was optimized,ply was developed upwardly and downwardly,then a composite laminate layup library in the whole design space was combined with each other.Finally,the improved evenly method of layup library was determined.The critical buckling stress of this composite laminate layup library will increase by more than 10%compared with manual layup library.The bending-torsion coupling coefficient is reduced effectively by improving evenly,and the critical buckling stress will still increase more than 5%.

关 键 词：复合材料 铺层库 铺层顺序 屈曲稳定性 参数优化 

分 类 号：TB330.1[一般工业技术—材料科学与工程]