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Buckling of planar curved beams with finite prebuckling deformation

文献类型：期刊论文

作者Li, Jiacheng6; Pan, Fei3; Guo, Shu2; Chen, Yuli1,6; Su, Yewang4,5
刊名INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
出版日期2024-12-01
卷号305页码:23
关键词Prebuckling deformation Critical load Geometric parameter Planar curved beams Serpentine structures Stretchable electronics
ISSN号0020-7683
DOI10.1016/j.ijsolstr.2024.113081
通讯作者Chen, Yuli(yulichen@buaa.edu.cn) ; Su, Yewang(yewangsu@imech.ac.cn)
英文摘要The serpentine structure with a sufficiently thick cross section has recently been proposed as an important design concept in stretchable electronics, which features mechanically stable in-plane deformation mechanism and very low electrical resistance, bringing unique advantages for devices compared with the traditional thin ribbon layout. However, unduly increasing the thickness is well known to sacrifice the overall flexibility and functionality of devices. Such a contradiction leads to challenges in structural stability, as a relatively thick but insufficient serpentine structure may eventually undergo the out-of-plane buckling after significant in-plane prebuckling deformation and appreciable alterations in initial configuration, which is ignored by most conventional buckling theories (CBTs) and linear buckling analysis in commercial finite element analysis software, producing intolerable errors when predicting the critical loads. In this paper, a systematic and straightforward theory considering the finite prebuckling deformation (FPD buckling theory) is established to investigate the underlying mechanism. Two sets of governing equations related to the prebuckling and FPD buckling behavior are obtained. Four representative examples, including two classical problems of planar curved beams and two typical loading conditions of serpentine structures, have been carefully studied. Comparisons with the accurate geometrically-nonlinear-analysis-based (GNAB) buckling analysis have amply demonstrated the validity of our theory in predicting the reinforcement effect of prebuckling deformation on the buckling resistance of structures. Key dimensionless geometric parameters that govern this effect have also been identified, providing direct and effective guidance for the design and optimization of stretchable electronic devices.
WOS关键词POSTBUCKLING ANALYSIS ; ELECTRONICS ; STABILITY ; ARCHES
资助项目National Natural Science Foundation of China[12172026] ; National Natural Science Foundation of China[12225201] ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences[ZDBS-LY-JSC014] ; CAS Interdisciplinary Innovation Team[JCTD-2020-03]
WOS研究方向Mechanics
语种英语
WOS记录号WOS:001333165500001
资助机构National Natural Science Foundation of China ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; CAS Interdisciplinary Innovation Team
源URL[http://dspace.imech.ac.cn/handle/311007/96999]  
专题力学研究所_非线性力学国家重点实验室
通讯作者Chen, Yuli; Su, Yewang
作者单位1.Tianmushan Lab, Hangzhou 310023, Peoples R China
2.Yanshan Univ, Sch Vehicle & Energy, Qinhuangdao 066004, Peoples R China
3.Beihang Univ, Sch Aeronaut Sci & Engn, Beijing 100191, Peoples R China
4.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
5.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
6.Beihang Univ, Inst Solid Mech, Beijing 100191, Peoples R China
推荐引用方式
GB/T 7714		 Li, Jiacheng,Pan, Fei,Guo, Shu,et al. Buckling of planar curved beams with finite prebuckling deformation[J]. INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,2024,305:23.
APA Li, Jiacheng,Pan, Fei,Guo, Shu,Chen, Yuli,&Su, Yewang.(2024).Buckling of planar curved beams with finite prebuckling deformation.INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,305,23.
MLA Li, Jiacheng,et al."Buckling of planar curved beams with finite prebuckling deformation".INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES 305(2024):23.

入库方式： OAI收割

来源：力学研究所

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