From period-doubling to folding in stiff film/soft substrate system: The role of substrate nonlinearity

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	From period-doubling to folding in stiff film/soft substrate system: The role of substrate nonlinearity
	Zhuo LJ; Zhang Y(张吟)
刊名	INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
	2015-11
通讯作者邮箱	zhangyin@lnm.imech.ac.cn
卷号	76 页码:1-7
关键词	Period-doubling Folding neo-Hookean Substrate nonlinearity Pre-stretch
ISSN号	0020-7462
通讯作者	Zhang, Y (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
产权排序	[Zhuo, Lijun; Zhang, Yin] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
中文摘要	Uniaxial compressed stiff films on soft substrates can evolve into the period-doubling and folding instabilities, beyond the onset of sinusoidal wrinkling. The substrate is modeled as a neo-Hookean solid with a pre-stretch prior to film attachment, and its nonlinearity is obtained. Both the pre-stretch and the external nominal strain imposed on the film/substrate system can induce different substrate nonlinearity, and thus have different effects on the post-buckling mode evolution of the system. This study shows that the critical strain of period-doubling instability is linear to the pre-stretch. As the compressive nominal strain increases, the folding mode occurs beyond the onset of period-doubling in both the pre-tension and the pre-compression case, due to the softening/hardening effects for the inward/outward displacements generated by the positive substrate nonlinearity. (C) 2015 Elsevier Ltd. All rights reserved.
分类号	二类/Q1
类目[WOS]	Mechanics
研究领域[WOS]	Mechanics
关键词[WOS]	THIN-FILMS ; COMPLIANT SUBSTRATE ; ELASTOMERIC POLYMER ; BUCKLING PATTERNS ; WRINKLES ; DEFORMATION ; ELECTRONICS ; INSTABILITY ; MECHANICS ; STRESS
收录类别	SCI ; EI
原文出处	http://dx.doi.org/10.1016/j.ijnonlinmec.2015.05.002
语种	英语
WOS记录号	WOS:000362135600001
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/58408]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Zhuo LJ,Zhang Y. From period-doubling to folding in stiff film/soft substrate system: The role of substrate nonlinearity[J]. INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS,2015,76:1-7.
APA	Zhuo LJ,&张吟.(2015).From period-doubling to folding in stiff film/soft substrate system: The role of substrate nonlinearity.INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS,76,1-7.
MLA	Zhuo LJ,et al."From period-doubling to folding in stiff film/soft substrate system: The role of substrate nonlinearity".INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS 76(2015):1-7.