斜纹编织碳纤维复合材料层合厚板冲击后压缩行为分析  

Analysis on compression behavior of woven carbon fiber reinforced thick composite laminates under low velocity impact

作　　者：和卫平[1] 刘明 魏建辉 康逢辉 葛辛辛 张攀[4] HE Weiping;LIU Ming;WEI Jianhui;KANG Fenghui;GE Xinxin;ZHANG Pan(Wuhan Second Ship Design and Research Institute,Wuhan 430205,China;Luoyang Ship Material Research Institute,Luoyang 471023,China;China Ship Scientific Research Center,Wuxi 214082,China;School of Naval Architecture and Ocean Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]武汉第二船舶设计研究所,湖北武汉430205 [2]洛阳船舶材料研究所,河南洛阳471023 [3]中国船舶科学研究中心,江苏无锡214082 [4]华中科技大学船舶与海洋工程学院,湖北武汉430074

出　　处：《中国舰船研究》2023年第5期166-172,共7页Chinese Journal of Ship Research

基　　金：国家自然科学基金资助项目(52171307)。

摘　　要：[目的]为分析冲击损伤对层合板压缩强度和失效行为的影响,对冲击后的编织碳纤维复合材料层合厚板开展面内压缩试验和数值仿真研究。[方法]通过建立有限元模型,开展层合板冲击后的压缩仿真分析,采用Fortran语言编写用户自定义材料子程序(VUMAT),实现改进的Hashin失效准则和基于损伤变量的材料退化模型在ABAQUS/Explict中的应用;从压缩强度和压缩破坏模式两方面将数值模拟与试验结果进行对比,验证所建立数值模型的有效性。[结果]结果显示,冲击损伤会降低层合板的压缩强度,无损层合板的压缩失效模式为端部破坏,冲击后的层合板会出现横贯试件中部的截断式破坏;冲击后的压缩强度会随冲击能量的增大而降低,但压缩强度与冲击能量之间并不存在线性关系;层合板损伤行为的拓展与压缩载荷的历程密切相关,压缩载荷在达到层合板破坏载荷的阈值之前,层合板的损伤几乎没有发生拓展,一旦压缩载荷达到阈值,损伤将沿宽度方向迅速拓展,最终发生横贯整个模型宽度方向的压缩损伤。[结论]所做研究可为斜纹编织碳纤维复合材料层合厚板的抗冲击性能评估提供参考。[Objectives]In order to study the effects of impact damage on the compressive strength and failure modes of woven carbon fiber reinforced thick composite laminates,in-plane compression tests are carried out.[Methods]The modified Hashin failure criterion and material degradation model are realized with user-defined subroutines to simulate the failure behaviors of laminates using the ABAQUS/Explicit modelling package.The effectiveness of the numerical model is validated through comparison with experiments aimed at the compressive strength and failure modes.[Results]The results show that the impact damage reduces the compressive strength of the impacted laminates.The compressive failure mode of the non-destructive specimen is concentrated at the ends of the impacted laminates,while truncated failure occurs across the middle region.The compressive strength decreases with the increase in impact energy,but there is no linear relationship between the compressive strength and impact energy.The evolution of the damage behavior of laminated plates is closely related to the history of compression load.The damage failure of laminates hardly develops when the compression load is below the threshold of the failure load.Otherwise,the damage expands rapidly in the width direction,and compression damage eventually occurs across the whole width direction of the laminate.[Conclusions]The results of this study can provide references for evaluating the impact resistance of woven carbon fiber reinforced thick composite laminates.

关 键 词：碳纤维复合材料 冲击后压缩 压缩强度 失效模式 有限元分析 

分 类 号：U661.4[交通运输工程—船舶及航道工程] TB332[交通运输工程—船舶与海洋工程]