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
	2022-04-01
发表期刊	Xiyou Jinshu Cailiao Yu Gongcheng/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. Copyright © 2022, Northwest Institute for Nonferrous Metal Research. Published by Science Press. All rights reserved.
关键词	Geometry Indentation Piezoelectric materials Piezoelectricity Axisymmetric Contact Stress Flat indenter Half spaces Indenters Nano indentation Normal stress Singularity Thin-films Transversely isotropic piezoelectric ceramics
收录类别	EI
语种	英语
出版者	Science Press
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
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/158423
专题	机电工程学院
作者单位	1.School of Mechanical and Electronic Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Mechanical Engineering, University of Kentucky, KY; 40506, United States
第一作者单位	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]. Xiyou Jinshu Cailiao Yu Gongcheng/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.Xiyou Jinshu Cailiao Yu Gongcheng/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".Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering 51.4(2022):1218-1225.