玻璃钢/复合材料Issue(4)：45-50,6.
EPP泡沫填充对铝蜂窝动态冲击性能的影响研究
EXPERIMENTAL INVESTIGATION INTO THE DYNAMIC IMPACTRESPONSES OF ALUMINUM HONEYCOMB PANEL FILLED WITH EPP FOAM
摘要
Abstract
The paper investigated the dynamic impactresponses and failure process of aluminum honeycomb panel filled with EPP foam (Expanded polypropylene) experimentally.It was found that the initial peak stress and average stress of EPP foam filled aluminum honeycomb increased by 32.86％ ～68.57％ and 15.00％ ～72.50％ respectively,compared to the bare honeycomb under the same impact velocity.But the specific energy absorption (SEA) reduced by 33.54％ ～ 66.56％.For the filled panels with the same foam density,the initial peak stress,average stress and specific energy absorption increased with th increase in impact velocity.The SEA values under the impact velocity of 2.6 m/s and 3.2 m/s increased by 68.10％ ～ 152.45％ compared to the impact velocity of 2 m/s.By comparing with the characteristics in the static compression test,the initial peak stress in the dynamic impact test increased by 1.72％～ 12.04％,whereas the average stress decreased by 6.51％ ～ 18.84％,and the SEA valuses decreased by 31.50％～65.50％.The study showed that EPP foam filling was effective to improve the impact performance of the bare aluminum honeycomb.关键词
轻量化/铝蜂窝/EPP泡沫/Ls-dyna/动态冲击性能Key words
lightweight/aluminum honeycomb/EPP foam/Ls-dyna/dynamic impact characteristics分类
通用工业技术引用本文复制引用
刘强,何兆亨,陈航..EPP泡沫填充对铝蜂窝动态冲击性能的影响研究[J].玻璃钢/复合材料,2018,(4):45-50,6.基金项目
国家自然科学基金(51675540) （51675540）
中国博士后科学基金(2015M582323) （2015M582323）
湖南省自然科学基金(2016JJ3039) （2016JJ3039）
