[1]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),2013,43(5):1045-1049.[doi:10.3969/j.issn.1001-0505.2013.05.024]
 Yang Fujun,Lu Weichang,He Xiaoyuan.Effect of core thickness and cell structure on flexural behaviour of closed-cell aluminum foam sandwich beams[J].Journal of Southeast University (Natural Science Edition),2013,43(5):1045-1049.[doi:10.3969/j.issn.1001-0505.2013.05.024]
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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()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
43
期数:
2013年第5期
页码:
1045-1049
栏目:
材料科学与工程
出版日期:
2013-09-20

文章信息/Info

Title:
Effect of core thickness and cell structure on flexural behaviour of closed-cell aluminum foam sandwich beams
作者:
杨福俊卢位昌何小元
东南大学土木学院, 南京 210096
Author(s):
Yang Fujun Lu Weichang He Xiaoyuan
School of Civil Engineering, Southeast University, Nanjing 210096, China
关键词:
闭孔泡沫铝 三明治梁 弯曲荷载 变形行为
Keywords:
closed-cell aluminum foams sandwich beam flexural loading deformation behavior
分类号:
TG115
DOI:
10.3969/j.issn.1001-0505.2013.05.024
摘要:
采用三点弯曲加载方式对闭孔泡沫铝和铝板胶合成的三明治梁力学性能进行了实验研究.通过实验分析不同的芯材厚度、弯曲加载跨距以及胞孔形状对三明治梁极限承载力以及结构失效模式的影响.结果表明:三明治梁的抗弯极限承载能力随着芯材厚度的增加而增加;结构的失效模式与加载跨距及芯材的厚度有关,失效模式主要有压痕、芯材与面板断裂、面板皱褶及脱黏等形式;规则形状的胞孔芯材与不规则形状的胞孔芯材构成的同样尺寸的三明治梁相比:前者的极限承载力更大,能量吸收能力更高.
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 ultimate load. The experimental results show that the ultimate load increases as the growth of its thickness 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.

参考文献/References:

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相似文献/References:

[1]杨福俊,唐兆琛,朱莉,等.闭孔泡沫铝特征统计及其变形行为实验研究[J].东南大学学报(自然科学版),2009,39(2):250.[doi:10.3969/j.issn.1001-0505.2009.02.013]
 Yang Fujun,Tang Zhaochen,Zhu Li,et al.Experimental study on cellular structure statistical analysis and uniaxial deformation behavior of closed-cell aluminum foam[J].Journal of Southeast University (Natural Science Edition),2009,39(5):250.[doi:10.3969/j.issn.1001-0505.2009.02.013]

备注/Memo

备注/Memo:
作者简介: 杨福俊(1968—),男,博士,教授,博士生导师,yang-fj@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(11272090,10972055).
引文格式: 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,2013,43(5):1045-1049. [doi:10.3969/j.issn.1001-0505.2013.05.024]
更新日期/Last Update: 2013-09-20