摘要
通过准静态单轴拉伸试验和面内剪切试验获取力学性能参数,采用Ls-Dyna软件中的纤维增强复合材料渐进损伤模型和复合材料层合板连续损伤模型模拟碳纤维复合材料层合板在面内剪切载荷作用下的力学响应和破坏模式,对比了2种模型的适用性。结果表明:在面内剪切过程中的初始线弹性阶段,2种模型都能较好地模拟出碳纤维复合材料层合板的力学特性。随着载荷的持续增大,渐进损伤模型的载荷-位移仿真曲线依旧呈线性上升,到达载荷峰值后迅速下降,与试验曲线存在很大偏差;连续损伤模型由于引入了损伤参数,当材料出现损伤后,其载荷-位移仿真曲线呈非线性,与试验曲线吻合良好。
The progressive failure model of fiber reinforced plastics and the continuous damage model of composite laminate of the Ls-Dyna software were applied to simulate the mechanical response and damage modes of carbon fiber reinforced plastic laminates under in-plane shear loads,with the mechanical parameters obtained by quasi-static uniaxial tensile and in-plane shear tests.The applicability of the two models was compared.The results show that in the initial linear elastic stage during in-plane shearing,the two models could simulate the mechanical characteristics of the carbon fiber reinforced plastic laminates.As the load continued to increase,the loaddisplacement simulation curve obtained by the progressive failure model still rose linearly,and dropped rapidly after reaching the load peak;the simulation curve had a large deviation from the test curve.When the material was damaged,because of the introduction of damage parameters,the load-displacement simulation curve obtained by the continuous damage model was nonlinear,which was in good agreement with the test curve.
作者
孟宪明
钟正
程从前
曹铁山
赵杰
黄亚烽
吴瑶
MENG Xianming;ZHONG Zheng;CHENG Congqian;CAO Tieshan;ZHAO Jie;HUANG Yafeng;WU Yao(China Automotive Technology&Research Center Co.,Ltd.,Tianjin 300300,China;School of Materials Science and Engineering,Dalian University of Technology,Dalian 116024,China)
出处
《机械工程材料》
CAS
CSCD
北大核心
2020年第12期85-90,96,共7页
Materials For Mechanical Engineering
基金
国家重点研发计划“新能源汽车”重点专项项目(2016YFB0101602)。
关键词
碳纤维复合材料
连续损伤模型
渐进损伤模型
损伤参数
carbon fiber reinforced plastic
continuous damage model
progressive failure model
damage parameter
