面向刚度设计的GFRP和VRB/GFRP混合层合板应变能密度分布研究  

Research on Strain Energy Density Distribution in GFRP and VRB/GFRP Hybrid Laminates for Stiffness Design

作　　者：杨小同 张雨 徐伟 刘星[1] 吴闯 段利斌 YANG Xiaotong;ZHANG Yu;XU Wei;LIU Xing;WU Chuang;DUAN Libin(School of Automotive and Traffic Engineering,Jiangsu University,Zhenjiang 212013,Jiangsu,China;Advanced Vehicle Development&Vehicle Integration Department,Pan Asia Technical Automotive Center Co.,Ltd.,Shanghai 200120,China)

机构地区：[1]江苏大学汽车与交通工程学院,江苏镇江212013 [2]泛亚汽车技术中心有限公司前期车辆开发与整车集成部,上海200120

出　　处：《汽车工程学报》2023年第6期899-911,共13页Chinese Journal of Automotive Engineering

基　　金：国家自然科学基金面上项目(52275252);江苏省重点研发计划项目(BE2022053-4):产业前瞻及关键核心技术。

摘　　要：针对VRB/GFRP混合结构刚度优化设计复杂而耗时这一问题,利用有限元法分析了GFRP铺层角度和铺层数量、VRB厚度分布形式对两种层合板刚度特性及各组分应变能密度分布的影响规律。研究结果表明,应变能密度越小能表征更好的刚度性能;抗弯与抗凹工况下,采用#(0/90)铺层角度、增加GFRP铺层数量以及VRB采用0.9-1.8-0.9 mm的厚度分布形式时,VRB/GFRP层合板各组分的应变能密度分布更加均匀,从而获得更好的刚度性能。The stiffness optimization design for VRB/GFRP hybrid structures is complex and timeconsuming.Therefore this paper uses the finite element method to analyze the effects of GFRP ply angle,ply count and VRB thickness distribution on the stiffness characteristics of the two types of laminates and the strain energy density distribution of each component.The research results show that a lower strain energy density correlates with enhanced stiffness performance.Under bending and concave conditions,using the#(0/90)ply angle,increasing the number of GFRP plies,and the VRB adopting a 0.9-1.8-0.9 mm thickness distribution,the strain energy density distribution is more uniform across each component material of the VRB/GFRP laminate,leading to better stiffness performance.

关 键 词：GFRP VRB/GFRP 混合结构 应变能密度分布 刚度特性 

分 类 号：TB333[一般工业技术—材料科学与工程]