2016-Sustainable Industrial Processing Summit
SIPS 2016 Volume 7: Yang Intl. Symp. / Multiscale Material Mechanics
| Editors: | Kongoli F, Aifantis E, Wang H, Zhu T |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2016 |
| Pages: | 190 pages |
| ISBN: | 978-1-987820-48-5 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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A New Model for Piezoelectric Material with Void Surface Effect
K.Y. Xu1; Yanmei Yue2;1SHANGHAI UNIVERSITY, Shanghai, China; 2SHANGHAI UNIVERSTIY, Shanghai, China;
Type of Paper: Regular
Id Paper: 80
Topic: 1
Abstract:
This paper proposes a new model for the piezoelectric material with surface effects to describe gradient and surface effects. The constitutive equations and boundary conditions are derived by the variational method. Then this new model is used to solve the anti-plane problem of an infinity piezoelectricity with micro-hole. The impact of structure and surface properties of the material on the electromechanical fields is analyzed. The numerical results reveal that the surface/interface layer thickness has a great effect on the electromechanical couplings around the micro-hole. It is indicated that the thicker the surface layer is, the larger the effect of surface properties on the electromechanical responses is. In comparison, the internal length scales have a significant effect only on the electric field distributions, and their effect on stresses is very limited.