Fracture mechanics of piezoelectric materials

CORC > 力学研究所 > 中国科学院力学研究所 > 力学所知识产出(1956-2008)

	Fracture mechanics of piezoelectric materials
	Wang ZQ(王自强); Han XL(韩学礼)
刊名	International Journal of Fracture
	1999
卷号	98 期号:1 页码:15-35
ISSN号	0376-9429
通讯作者	Wang, TC (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100080, Peoples R China.
中文摘要	This paper presents an analysis of crack problems in homogeneous piezoelectrics or on the interfaces between two dissimilar piezoelectric materials based on the continuity of normal electric displacement and electric potential across the crack faces. The explicit analytic solutions are obtained for a single crack in an infinite piezoelectric or on the interface of piezoelectric bimaterials. For homogeneous materials it is found that the normal electric displacement D-2, induced by the crack, is constant along the crack faces which depends only on the remote applied stress fields. Within the crack slit, the perturbed electric fields induced by the crack are also constant and not affected by the applied electric displacement fields. For bimaterials, generally speaking, an interface crack exhibits oscillatory behavior and the normal electric displacement D-2 is a complex function along the crack faces. However, for bimaterials, having certain symmetry, in which an interface crack displays no oscillatory behavior, it is observed that the normal electric displacement D-2 is also constant along the crack faces and the electric field E-2 has the singularity ahead of the crack tip and has a jump across the interface. Energy release rates are established for homogeneous materials and bimaterials having certain symmetry. Both the crack front parallel to the poling axis and perpendicular to the poling axis are discussed. It is revealed that the energy release rates are always positive for stable materials and the applied electric displacements have no contribution to the energy release rates.
学科主题	力学
类目[WOS]	Materials Science, Multidisciplinary ; Mechanics
研究领域[WOS]	Materials Science ; Mechanics
关键词[WOS]	ELLIPTIC CRACK ; CERAMICS ; SOLIDS ; TIP
收录类别	SCI
语种	英语
WOS记录号	WOS:000083192600004
公开日期	2007-06-15 ; 2007-12-05 ; 2009-06-23
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/15805]
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	Wang ZQ,Han XL. Fracture mechanics of piezoelectric materials[J]. International Journal of Fracture,1999,98(1):15-35.
APA	王自强,&韩学礼.(1999).Fracture mechanics of piezoelectric materials.International Journal of Fracture,98(1),15-35.
MLA	王自强,et al."Fracture mechanics of piezoelectric materials".International Journal of Fracture 98.1(1999):15-35.