Electroelastic field concentrations and polarization switching induced by circular electrode at the interface of piezoelectric disk composites |
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| Affiliation: | 1. Department of Material Science and Engineering, Chongqing University, Chongqing, 400044, PR China;2. Department of Mechanical Engineering, National University of Singapore, 117576, Singapore;3. Chongqing Instrument Material Research Institute, Chongqing, 400044, PR China;1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China;2. School of Civil Engineering, Central South University, Changsha 410075, China;1. Department of Physics and Microwave Laboratory, Indian Institute of Technology Madras, Chennai 600 036, India;2. Department of Physics and Nano Functional Materials Technology Centre, Indian Institute of Technology Madras, Chennai 600 036, India;3. Condensed Matter Physics Division, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, India;1. School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, PR China;2. State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, PR China;1. Department of Chemistry and Physics, Southwestern Oklahoma State University, 100 Campus Drive, Weatherford, OK 73096, United States;2. Department of Chemistry and Positron Emission Tomography Research Centre, University of Hull, Cottingham Road, Hull HU6 7RX, UK |
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| Abstract: | ![]()
The electromechanical field concentrations due to circular electrode at the interface of piezoelectric disk composites have been discussed. This paper consists of two parts. In the first part, the problem of an internal electrode embedded at the interface of two dissimilar semi-infinite piezoelectric solids was formulated by means of Hankel transforms, and the solution was solved exactly. In the second part, finite element analysis was carried out to study electromechanical response in piezoelectric disk composites containing a circular electrode at the interface by introducing a model for polarization switching in local areas of field concentrations. A nonlinear behavior induced by localized polarization switching was observed between the strain and the voltage applied to the electrode. |
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