期刊
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
卷 35, 期 8, 页码 885-894出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijimpeng.2008.01.006
关键词
sandwich beam; aluminum foam; low-velocity impact; failure map; dynamic response
In this paper, the response and failure of sandwich beams with aluminum-foam core are investigated. Quasi-static and low-velocity impact bending tests are carried out for sandwich beams with aluminum-foam core. The deformation and failure behavior is explored. It is found that the failure mode and the load history predicted by a modified Gibson's model agree well with the quasi-static experimental data. The failure modes and crash processes of beams under impact loading are similar to those under quasi-static loading, but the force-displacement history is very different. Hence the quasi-static model can also predict the initial dynamic failure modes of sandwich beams when the impact velocity is lower than 5 m/s. (C) 2008 Elsevier Ltd. All rights reserved.
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