摘要
采用LS-DYNA研究了纤维增强复合材料(FRP)夹芯板的低速冲击特性,对比分析了上、下面板在变化冲击质量下的损伤与扩展特性。该结构可减小冲击力峰值、缩短接触时间、吸收85%的冲击动能;冲击引起FRP面板内产生多种沿铺层或铺层垂直方向扩展的损伤,其中基体损伤可占全部损伤面积的65%,纤维刚度退化面积占纤维总损伤面积的80%;1.5mm夹芯层厚度可降低上面板30%的单层最大分层面积。
The low-velocity impact characteristics of fiber reinforce plastic(FRP)composite material sandwich panels is studied by using LS-DYNA,and the damage and expansion characteristics of the upper and lower panels are analyzed under different impact mass.This structure can reduce the peak impact force,shorten the contact time,and absorb 85%of the impact kinetic energy.The impact causes a variety of damages in the FRP layer that extend along the laminate or the vertical direction of the laminate,and the matrix damage can account for 65%of the total damage area.The fiber stiffness degradation area accounts for 80%of the total fiber damage area.The thickness of the 1.5 mm sandwich layer can reduce the maximum layered area of the upper panel by 30%.
作者
万江鹏
董科
章鹏
WAN Jiangpeng;DONG Ke;ZHANG Peng(School of Ocean Engineering,Harbin Institute of Technology(Weihai),Weihai 264209,Shandong,China)
出处
《船舶工程》
CSCD
北大核心
2022年第7期130-136,共7页
Ship Engineering
基金
山东科技发展计划资助项目(2014GGA10107)。
