The electro-mechanics of a coating/substrate system under charged spherical contact

被引：14
|
作者：
Hou, P. F.
Zhang, W. H. [1 ]
机构：
[1] Hunan Univ, State Key Lab Adv Design & Mfg Vehicle Body, Changsha 410082, Hunan, Peoples R China
来源：
MATHEMATICS AND MECHANICS OF SOLIDS | 2020年 / 25卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Coated system; piezo-electric contact mechanics; coating thickness; interface failure; indentation; sensors; RIGID PUNCH; LAYER; FORCE; SUBSTRATE; BEHAVIOR; PIEZORESPONSE; STRESSES; SURFACE;
D O I：
10.1177/1081286519865773
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A general theory of the piezo-electric contact mechanics for a transversely isotropic piezo-electric elasticity coated system (TIPECS) under charged spherical contact is presented. Three-dimensional exact solutions for the stresses, displacements, electric displacements and electric potential are derived. The contact radius versus the total load relation is obtained to guide the indentation experiments. The relations of coating thickness versus voltage and coating thickness versus voltage are studied. The optimal thickness can be determined with an optimization procedure. The interfacial delamination area of the TIPECS can be predicted with the interfacial failure criterion. The theoretical results are helpful for the prediction of some transient electrical effects, which can be combined with experiments to estimate some elastic constants, dielectric constants and piezo-electric constants in the indentation process.
引用
收藏
页码：60 / 96
页数：37
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