Buckling of planar curved beams with finite prebuckling deformation

doi:10.1016/j.ijsolstr.2024.113081

IMECH-IR > 非线性力学国家重点实验室

	Buckling of planar curved beams with finite prebuckling deformation
	Li, Jiacheng 1; Pan, Fei 4; Guo, Shu 5; Chen, Yuli 1,6; Su YW(苏业旺)2,3
通讯作者	Chen, Yuli([email protected]) ; Su, Yewang([email protected])
发表期刊	INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
	2024-12-01
卷号	305 页码:23
ISSN	0020-7683
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.
关键词	Prebuckling deformation Critical load Geometric parameter Planar curved beams Serpentine structures Stretchable electronics
DOI	10.1016/j.ijsolstr.2024.113081
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:001333165500001
关键词[WOS]	POSTBUCKLING ANALYSIS ; ELECTRONICS ; STABILITY ; ARCHES
WOS研究方向	Mechanics
WOS类目	Mechanics
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]
项目资助者	National Natural Science Foundation of China ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; CAS Interdisciplinary Innovation Team
论文分区	一类/力学重要期刊
力学所作者排名	1
RpAuthor	Chen, Yuli ; Su, Yewang
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/97000
专题	非线性力学国家重点实验室
作者单位	1.Beihang Univ, Inst Solid Mech, Beijing 100191, Peoples R China; 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 4.Beihang Univ, Sch Aeronaut Sci & Engn, Beijing 100191, Peoples R China; 5.Yanshan Univ, Sch Vehicle & Energy, Qinhuangdao 066004, Peoples R China; 6.Tianmushan Lab, Hangzhou 310023, 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.Rp_Au:Chen, Yuli, Su, Yewang
APA	Li, Jiacheng,Pan, Fei,Guo, Shu,Chen, Yuli,&苏业旺.(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.