Partition Energy Absorption of Axially Crushed Aluminum Foam-Filled Hat Sections

CORC > 力学研究所 > 中国科学院力学研究所 > 力学所知识产出(1956-2008)

	Partition Energy Absorption of Axially Crushed Aluminum Foam-Filled Hat Sections
	Song HW(宋宏伟); Fan ZJ; Yu G(虞钢); Wang QC; Tobota A
刊名	International Journal of Solids and Structures
	2005
通讯作者邮箱	songhw@tsinghua.edu.cn
卷号	42 期号:9-10 页码:2575-2600
ISSN号	0020-7683
通讯作者	Song, HW (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100080, Peoples R China.
中文摘要	The "interaction effect" between aluminum foam and metal column that takes place when foam-filled hat sections (top-hats and double-hats) are axially crushed was investigated in this paper. Based on experimental examination, numerical simulation and analytical models, a systemic approach was developed to partition the energy absorption quantitatively into the foam filler component and the hat section component, and the relative contribution of each component to the overall interaction effect was therefore evaluated. Careful observation of the collapse profile found that the crushed foam filler could be further divided into two main energy-dissipation regions: densified region and extremely densified region. The volume reduction and volumetric strain of each region were empirically estimated. An analytical model pertinent to the collapse profile was thereafter proposed to find the more precise relationship between the volume reduction and volumetric strain of the foam filler. Combined the superfolding element model for hat sections with the current model according to the coupled method, each component energy absorption was subsequently derived, and the influence of some controlling factors was discussed. According to the finite element analysis and the theoretical modeling, when filled with foam, energy absorption was found to be increased both in the hat section and the foam filler, whereas the latter contributes predominantly to the interaction effect. The formation of the extremely densified region in the foam filler accounts for this effect.
学科主题	力学
类目[WOS]	Mechanics
研究领域[WOS]	Mechanics
关键词[WOS]	THIN-WALLED SECTIONS ; BENDING COLLAPSE ; TOP-HAT ; EXTRUSIONS ; SQUARE ; COLUMNS ; DESIGN
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000226947800007
公开日期	2007-06-15 ; 2007-12-05 ; 2009-06-23
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/16580]
专题	力学研究所_力学所知识产出(1956-2008)
推荐引用方式 GB/T 7714	Song HW,Fan ZJ,Yu G,et al. Partition Energy Absorption of Axially Crushed Aluminum Foam-Filled Hat Sections[J]. International Journal of Solids and Structures,2005,42(9-10):2575-2600.
APA	宋宏伟,Fan ZJ,虞钢,Wang QC,&Tobota A.(2005).Partition Energy Absorption of Axially Crushed Aluminum Foam-Filled Hat Sections.International Journal of Solids and Structures,42(9-10),2575-2600.
MLA	宋宏伟,et al."Partition Energy Absorption of Axially Crushed Aluminum Foam-Filled Hat Sections".International Journal of Solids and Structures 42.9-10(2005):2575-2600.