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Buckling of beams with finite prebuckling deformation

文献类型：期刊论文

作者Su YW(苏业旺)6,7; Zhao HY(赵红玉)6,7; Liu SY5; Li R3,4; Wang YH1,2; Wang YZ1,2; Bian J1,2; Huang YA1,2
刊名INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
出版日期2019-06-15
卷号165页码:148-159
关键词Buckling Three-point bending Critical buckling load Finite deformation mechanics Stretchable electronics
ISSN号0020-7683
DOI10.1016/j.ijsolstr.2019.01.027
通讯作者Su, Yewang(yewangsu@imech.ac.cn) ; Huang, YongAn(yahuang@hust.edu.cn)
英文摘要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.
分类号一类/力学重要期刊
WOS关键词POSTBUCKLING ANALYSIS ; THIN-FILMS ; DEFLECTIONS
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]
WOS研究方向Mechanics
语种英语
WOS记录号WOS:000464479500013
资助机构NSFC ; Chinese Academy of Sciences ; Chinese academy of sciences ; Young Elite Scientist Sponsorship Program by CAST
其他责任者Su, Yewang ; Huang, YongAn
源URL[http://dspace.imech.ac.cn/handle/311007/78690]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Huazhong Univ Sci & Technol, Flexible Elect Res Ctr, Wuhan 430074, Hubei, Peoples R China
2.Huazhong Univ Sci & Technol, State Key Lab Digital Mfg Equipment & Technol, Wuhan 430074, Hubei, Peoples R China;
3.Dalian Univ Technol, Int Res Ctr Computat Mech, Dalian 116024, Peoples R China;
4.Dalian Univ Technol, Dept Engn Mech, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China;
5.Tsinghua Univ, Dept Engn Mech, Beijing 100084, Peoples R China;
6.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China;
7.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, 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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来源：力学研究所

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