期刊
COMPOSITE STRUCTURES
卷 242, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2020.112175
关键词
Hybrid sandwich beam; Carbon fiber-reinforced plastic; Aluminum foam; Asymmetrical design; Failure; Low-velocity impact
资金
- NSFC [11972281, 11872291]
- opening project of State Key Laboratory of Explosion Science and Technology (Beijing Institute of Technology) [KFJJ18-07M, KFJJ19-15M]
- China Postdoctoral Science Foundation [2018M643621]
- Fundamental Research Funds for the Central Universities
The deformation and failure of hybrid composite sandwich beams with an aluminum foam core under quasi-static load and low-velocity impact are investigated. The sandwich beams comprise of two carbon fiber-reinforced plastic (CFRP) face sheets which have identical/unidentical thicknesses. The experimental results show that hybrid composite sandwich beams exhibit four active failure modes: face-sheet fracture, indentation, core shear and core shear-tension. Core shear occurs in sandwich beams with two identical face sheets, while core shear-tension develops in sandwich beams with two unidentical face sheets. An asymmetrical sandwich beam with a thicker top face sheet has superior load-carrying capability than those with a thinner top face sheet for the same total thickness of the top and bottom face sheets. For the similar failure modes of hybrid composite sandwich beams under quasi-static load and low-velocity impact, the low-velocity impact collapse load is higher than that corresponding to quasi-static collapse. The collapse loads of hybrid composite sandwich beams predicted by simple theoretical solutions are in good agreement with the experimental values.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据