东南大学学报（自然科学版）Issue(5)：1045-1049,5.DOI:10.3969/j.issn.1001-0505.2013.05.024
芯材厚度及胞孔结构对闭孔泡沫铝三明治梁弯曲性能的影响
Effect of core thickness and cell structure on flexural behaviour of closed-cell aluminum foam sandwich beams
摘要
Abstract
Sandwich beams with aluminum alloy faces and aluminum alloy foam cores were tested in three-point bending to characterize their mechanical properties.Tests were performed on sandwich beams with varying geometries, loading span and cells shape of core to identify failure modes and ul-timate load.The experimental results show that the ultimate load increases as the growth of its thick-ness in core materials.The beam's failure modes vary with the thickness of the core and the loading span.The main failure modes include indentation, core and face yielding or crack, face wrinkling and delamination.It is also found that the ultimate load and energy absorption of aluminum sandwich beams are related to the cell shape of aluminum alloy foam core.Sandwich beams with foam core of spheroid cell shape have higher ultimate load and energy absorption than those with polygonal cell shape.关键词
闭孔泡沫铝/三明治梁/弯曲荷载/变形行为Key words
closed-cell aluminum foams/sandwich beam/flexural loading/deformation behavior分类
矿业与冶金引用本文复制引用
杨福俊,卢位昌,何小元..芯材厚度及胞孔结构对闭孔泡沫铝三明治梁弯曲性能的影响[J].东南大学学报（自然科学版）,2013,(5):1045-1049,5.基金项目
国家自然科学基金资助项目（11272090，10972055）． （）
