两次冲击距离对CFRP层合板冲击损伤和剩余压缩强度的影响  

Effect of two impact distances on impact damage and residual compressive strength of CFRP laminates

作　　者：许良 胡鸿铭 周松 宋万万 XU Liang;HU Hongming;ZHOU Song;SONG Wanwan(School of Mechatronics Engineering,Shenyang Aerospace University,Shenyang 110136,China;Factory 53,Shenyang Aircraft Corporation,Shenyang 110034,China)

机构地区：[1]沈阳航空航天大学机电工程学院,沈阳110136 [2]沈阳飞机工业(集团)有限公司53厂,沈阳110034

出　　处：《复合材料科学与工程》2023年第12期12-18,37,共8页Composites Science and Engineering

基　　金：国家自然科学基金项目(51775355);沈阳航空航天大学航空制造工艺数字化国防重点学科实验室开放基金(SHSYS 202104)。

摘　　要：为了研究预损伤冲击对复合材料二次冲击及冲击后压缩行为的影响,对复合材料层合板进行预损伤冲击试验、二次冲击试验及冲击后压缩试验,探究预损伤冲击和二次冲击之间的距离与冲击损伤和剩余压缩强度之间的关系。基于三维Hashin准则和渐进损伤刚度退化方案,在ABAQUS/Explicit中建立预损伤冲击-二次冲击-压缩仿真模型,采用预制分层损伤的方法,将第一次冲击损伤预制进第二次冲击模型中。研究表明:所建立模型的仿真结果与试验结果吻合良好。当两次冲击距离小于两次冲击损伤面积纵向半径和的125%时,二次冲击损伤沿纤维方向向预损伤冲击位置延伸。当第二次冲击与预损伤冲击的距离为两次冲击损伤面积纵向半径和的150%时,剩余压缩强度最小,对层合板造成破坏最大。In order to study the influence of pre-damage impact on the secondary impact and post-impact compression behavior of composite materials,pre-damage impact test,secondary impact test and post-impact compression test of composite laminates were carried out.The relationship between the distance between the pre-damage impact and the secondary impact and the impact damage and the residual compressive strength was investigated.Based on the three-dimensional Hashin criterion and progressive damage stiffness degradation scheme,a pre-damage impact-secondary impact-compression simulation model is established in ABAQUS/Explicit.The first impact damage is prefabricated into the second impact model by the method of prefabricated layered damage.The results show that the simulation results of the established model agree well with the experimental results.When the two impact distance is less than 125%of the longitudinal radius sum of the two impact damage area,the secondary impact damage extends along the fiber direction to the pre-damage impact location.When the distance between the second impact and the pre-damage impact is 150%of the longitudinal radius sum of the two damage impact areas,the residual compressive strength is the smallest and the damage to the laminated plate is the largest.

关 键 词：碳纤维/环氧树脂复合材料 预损伤 两次冲击 有限元分析 剩余压缩强度 

分 类 号：TB332[一般工业技术—材料科学与工程]