摘要
对包套轧制及胶粘泡沫铝夹芯板进行了低速冲击试验,分析了两种夹芯板在低速冲击下的力学响应及破坏形式.结果表明,两种结合界面的夹芯板都具有吸能特性,但冶金结合夹芯板抗冲击的缓冲时间明显长于胶粘结合夹芯板.随着加载冲量的增加,冶金结合夹芯板的屈服载荷和平台载荷增加,缓冲时间缩短,抗冲击过程表现出明显的应变率效应.冶金结合夹芯板破坏模式主要为芯层剪切、压实和面板塌陷.
The low-velocity impact tests on the aluminum foam sandwiches （AFS） with a metallic bonding and adhesive bonding between face sheets and foam core were carried out. The mechanical response and failure mode of two kinds of AFS was studied. The results showed that the two kinds of AFS have the ability of energy absorption, but the buffer time of AFS with a metallic bonding between face sheets and foam core is longer than that of the adhesive structure. With the increase of load, the yield load and platform load of the AFS with a metallic bonding between face sheets and foam core increase and the buffer time reduces, showing an obvious strain rate effect during the test. The failure modes of the AFS with a metallic bonding between face sheets and foam core are core shear, core compaction and panel bending deformation.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2014年第11期1583-1587,共5页
Journal of Northeastern University(Natural Science)
基金
中央高校基本科研业务费专项资金资助项目(N120502003)
辽宁省"百千万人才工程"计划项目(2013921071)
关键词
泡沫铝夹芯板
低速冲击
破坏模式
极限载荷
冶金结合
aluminum foam sandwichs （ AFS ）
low-velocity impact
failure mode
yield load
metallic bonding
