Wedge and Twist Disclinations in Second Strain Gradient Elasticity

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	Wedge and Twist Disclinations in Second Strain Gradient Elasticity
	Deng SC(邓守春); Liu JX(刘金兴); Liang NG(梁乃刚)
刊名	International Journal of Solids and Structures
	2007
通讯作者邮箱	dengsc@lnm.imech.ac.cn
卷号	44 期号:11-12 页码:3646-3665
ISSN号	0020-7683
通讯作者	Deng, SC (reprint author), CAS, Inst Mech, State Key LNM, Beijing 100080, Peoples R China.
中文摘要	The aim of this paper is to study disclinations in the framework of a second strain gradient elasticity theory. This second strain gradient elasticity has been proposed based on the first and second gradients of the strain tensor by Lazar et al. [Lazar, M., Maugin, G.A., Aifantis, E.C., 2006. Dislocations in second strain gradient elasticity. Int. J. Solids Struct. 43, 1787-1817]. Such a theory is an extension of the first strain gradient elasticity [Lazar, M., Maugin, G.A., 2005. Nonsingular stress and strain fields of dislocations and disclinations in first strain gradient elasticity. Int. J. Eng. Sci. 43, 1157-1184] with triple stress. By means of the stress function method, the exact analytical solutions for stress and strain fields of straight disclinations in an infinitely extended linear isotropic medium have been found. An important result is that the force stress, double stress and triple stress produced by wedge and twist disclinations are nonsingular. Meanwhile, the corresponding elastic strain and its gradients are also nonsingular. Analytical results indicate that the second strain gradient theory has the capacity of eliminating all unphysical singularities of physical fields.
学科主题	力学
类目[WOS]	Mechanics
研究领域[WOS]	Mechanics
收录类别	SCI
语种	英语
WOS记录号	WOS:000246943400004
公开日期	2007-06-15
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/15511]
专题	力学研究所_力学所知识产出(1956-2008)
推荐引用方式 GB/T 7714	Deng SC,Liu JX,Liang NG. Wedge and Twist Disclinations in Second Strain Gradient Elasticity[J]. International Journal of Solids and Structures,2007,44(11-12):3646-3665.
APA	邓守春,刘金兴,&梁乃刚.(2007).Wedge and Twist Disclinations in Second Strain Gradient Elasticity.International Journal of Solids and Structures,44(11-12),3646-3665.
MLA	邓守春,et al."Wedge and Twist Disclinations in Second Strain Gradient Elasticity".International Journal of Solids and Structures 44.11-12(2007):3646-3665.