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

CORC > 兰州理工大学 > 兰州理工大学 > 机电工程学院

	Singularities of Contact Stress and Electric Field During Indentation of Piezoelectric Ceramics by Cylindrical, Flat Indenter
	Chen Wenke 1,2; Jin Wuyin 1
刊名	RARE METAL MATERIALS AND ENGINEERING
	2022-04-01
卷号	51 期号:4 页码:1218-1225
关键词	indentation singularity flat indenter piezoelectric ceramics stress electric potential
ISSN号	1002-185X
英文摘要	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.
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
WOS记录号	WOS:000799378800011
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158910]
专题	机电工程学院
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
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.