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Buckling of beams with finite prebuckling deformation
Su YW(苏业旺)1,2; Zhao HY(赵红玉)1,2; Liu SY3; Li R4,5; Wang YH6,7; Wang YZ6,7; Bian J6,7; Huang YA6,7
Corresponding AuthorSu, Yewang( ; Huang, YongAn(
AbstractThe 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.
KeywordBuckling Three-point bending Critical buckling load Finite deformation mechanics Stretchable electronics
Indexed BySCI ; EI
WOS IDWOS:000464479500013
WOS Research AreaMechanics
WOS SubjectMechanics
Funding ProjectNSFC[11572323] ; NSFC[11772331] ; NSFC[51635007] ; NSFC[11302038] ; Chinese Academy of Sciences ; Chinese academy of sciences[XDB22040501] ; Young Elite Scientist Sponsorship Program by CAST[2015QNRC001]
Funding OrganizationNSFC ; Chinese Academy of Sciences ; Chinese academy of sciences ; Young Elite Scientist Sponsorship Program by CAST
ContributorSu, Yewang ; Huang, YongAn
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.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
Recommended Citation
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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