%0 Journal Article
%T Sandwich beams with high porosity and specific strength Al alloy foam core<br>高比强高孔隙率泡沫铝合金三明治梁
%A ZHAO Long HE Deping~
%A <br>赵龙
%A 何德坪
%A 单建
%J 材料研究学报
%D 2004
%I 
%X The compression and shear capacities of Al alloy foam and Al foam were studied. The failure modes and peak loads of sandwich beams with this Al alloy foam core were measured which was in good agreement with theoretic values. A design method is given which shows that rigidity is used as design controlling index for a low given load while relative peak load is used as controlling index for a high load. Comparison is made between the sandwich beams with the two different cores. It is concluded that sandwiches with Al alloy foam core have a rigidity 0$\sim$0.185 times higher than sandwiches with Al foam core, and a peak load 0.57$\sim$1.8 times higher under core--shear mode and 0.9$\sim$2.2 times higher under indentation than sandwiches with Al foam core.
%K metallic materials
%K metallic structures of super light
%K three-point bending
%K sandwich beams
%K high specific strength
%K Al alloy foam<br>金属材料
%K 超轻型金属结构
%K 三点弯曲
%K 三明治梁
%K 高比强
%K 泡沫铝合金
%K 高比强
%K 高孔隙率泡沫铝合金
%K 三明治梁
%K core
%K Al
%K alloy
%K foam
%K specific
%K strength
%K porosity
%K high
%K 极限强度
%K 剪切破坏
%K 强度设计
%K 刚度设计
%K 相对强度
%K 控制条件
%K 设计载荷
%K 设计方法
%K 实验
%K 结果
%K 理论计算
%K 承载能力
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=C101C4C04993B4D94FCD8446E6CBEB3B&aid=C5FFA0C35A243F98&yid=D0E58B75BFD8E51C&vid=13553B2D12F347E8&iid=94C357A881DFC066&sid=5CB576B96D187F64&eid=8C267C8DC97FEEEF&journal_id=1005-3093&journal_name=材料研究学报&referenced_num=1&reference_num=18