Buckling of beams with finite prebuckling deformation

doi:10.1016/j.ijsolstr.2019.01.027

IMECH-IR > 非线性力学国家重点实验室

	Buckling of beams with finite prebuckling deformation
	Su YW(苏业旺)1,2; Zhao HY(赵红玉)1,2; Liu SY 3; Li R4,5 ; Wang YH 6,7; Wang YZ 6,7; Bian J 6,7; Huang YA 6,7
通讯作者	Su, Yewang(yewangsu@imech.ac.cn) ; Huang, YongAn(yahuang@hust.edu.cn)
发表期刊	INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
	2019-06-15
卷号	165 页码:148-159
ISSN	0020-7683
摘要	The prebuckling deformation of structures is usually very small in conventional concepts, and is always neglected in the conventional buckling theory (CBT) and numerical method (CNM). In this paper, we find a class of structures from the emerging field of stretchable electronics, of which the prebuckling deformation becomes large and essential for determining the critical buckling load. Although great progress has been made for the buckling theory in the past hundred years, it is still challenging to analyze the buckling problems with finite prebuckling deformation (FPD buckling) straightforwardly. Here, the experimental stretch of a series of serpentine interconnects was firstly conducted as a representative example to show the FPD buckling behaviors and inapplicability of the CBT and CNM. The CNM can yield a huge error of 50% on the critical buckling load for the case with thickness-to-width ratio of the cross section h/b=0.6. Most importantly, a systematic and straightforward theory (FPD buckling theory) is developed to analyze the FPD buckling behaviors of beams with the coupling of bending, twist and stretch/compression. As a comparison, various theoretical and numerical methods are applied to three classic problems, including lateral buckling of a three-point-bending beam, lateral buckling of a pure bending beam and Euler buckling. Our FPD buckling theory for beams is able to give a good prediction, while the CBT (by Timoshenko et al.) and CNM (by commercial program packages) yield unacceptable results (with 70% error for a three-point-bending beam with h/b = 0.8, for example). Discussion on the FPD buckling of bulk structures is deferred to a following paper. (C) 2019 Elsevier Ltd. All rights reserved.
关键词	Buckling Three-point bending Critical buckling load Finite deformation mechanics Stretchable electronics
DOI	10.1016/j.ijsolstr.2019.01.027
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000464479500013
关键词[WOS]	POSTBUCKLING ANALYSIS ; THIN-FILMS ; DEFLECTIONS
WOS研究方向	Mechanics
WOS类目	Mechanics
资助项目	NSFC[11572323] ; NSFC[11772331] ; NSFC[51635007] ; NSFC[11302038] ; Chinese Academy of Sciences ; Chinese academy of sciences[XDB22040501] ; Young Elite Scientist Sponsorship Program by CAST[2015QNRC001]
项目资助者	NSFC ; Chinese Academy of Sciences ; Chinese academy of sciences ; Young Elite Scientist Sponsorship Program by CAST
论文分区	一类/力学重要期刊
力学所作者排名	1
RpAuthor	Su, Yewang ; Huang, YongAn
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/78690
专题	非线性力学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Tsinghua Univ, Dept Engn Mech, Beijing 100084, Peoples R China; 4.Dalian Univ Technol, Dept Engn Mech, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China; 5.Dalian Univ Technol, Int Res Ctr Computat Mech, Dalian 116024, Peoples R China; 6.Huazhong Univ Sci & Technol, State Key Lab Digital Mfg Equipment & Technol, Wuhan 430074, Hubei, Peoples R China; 7.Huazhong Univ Sci & Technol, Flexible Elect Res Ctr, Wuhan 430074, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Su YW,Zhao HY,Liu SY,et al. Buckling of beams with finite prebuckling deformation[J]. INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,2019,165:148-159.
APA	苏业旺.,赵红玉.,Liu SY.,Li R.,Wang YH.,...&Huang YA.(2019).Buckling of beams with finite prebuckling deformation.INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,165,148-159.
MLA	苏业旺,et al."Buckling of beams with finite prebuckling deformation".INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES 165(2019):148-159.

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