Singularities of Contact Stress and Electric Field During Indentation of Piezoelectric Ceramics by Cylindrical, Flat Indenter

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	Singularities of Contact Stress and Electric Field During Indentation of Piezoelectric Ceramics by Cylindrical, Flat Indenter
	Chen Wenke 1,2; Jin Wuyin1
	2022-04
发表期刊	RARE METAL MATERIALS AND ENGINEERING
ISSN	1002-185X
卷号	51 期号:4 页码:1218-1225
摘要	The finite element method (FEM) was used to simulate and to verify the axisymmetric nanoindentation response of a transversely isotropic piezoelectric ceramics by a conductive rigid flat indenter from half-space to thin film. The cylindrical, flat indenter without prescribed electric force was adopted to mechanically load the piezoelectric ceramics. The results show that the linear relationship between indentation load and indentation displacement is obtained. And the same relationship is obtained between electric potential and indentation displacement. In addition, resultant mechanoelectrical responses were analyzed. The simulation results indicate that the contact stress and electric field exhibit singularities round the edge of the indenter. Both stress and electric field singularities vary exponentially with respect to the thickness of the solids under the indenter. At the same time, the normal stress and electric potential distributions of the direct piezoelectric effects are given. Through the fitting formula of the normal stress, normal electric potential and tangential electric potential from the indentation interior to the contact edge under different indentation depths, the singular constants of electric field and stress field under different thickness of piezoelectric ceramics are proposed, and their variation rules are analyzed.
关键词	indentation singularity flat indenter piezoelectric ceramics stress electric potential
收录类别	SCIE ; EI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000799378800011
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
EI入藏号	20222012120225
EI主题词	Electric potential
EI分类号	701.1 Electricity: Basic Concepts and Phenomena ; 708.1 Dielectric Materials ; 921 Mathematics
来源库	WOS
引用统计	被引频次[WOS]：0 [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/158910
专题	机电工程学院
通讯作者	Chen Wenke
作者单位	1.Lanzhou Univ Technol, Sch Mech & Elect Engn, Lanzhou 730050, Peoples R China; 2.Univ Kentucky, Mech Engn, Lexington, KY 40506 USA
第一作者单位	兰州理工大学
通讯作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Chen Wenke,Jin Wuyin. Singularities of Contact Stress and Electric Field During Indentation of Piezoelectric Ceramics by Cylindrical, Flat Indenter[J]. RARE METAL MATERIALS AND ENGINEERING,2022,51(4):1218-1225.
APA	Chen Wenke,&Jin Wuyin.(2022).Singularities of Contact Stress and Electric Field During Indentation of Piezoelectric Ceramics by Cylindrical, Flat Indenter.RARE METAL MATERIALS AND ENGINEERING,51(4),1218-1225.
MLA	Chen Wenke,et al."Singularities of Contact Stress and Electric Field During Indentation of Piezoelectric Ceramics by Cylindrical, Flat Indenter".RARE METAL MATERIALS AND ENGINEERING 51.4(2022):1218-1225.