Effect of electrode finger width on the strain and stress distributions in macro fiber composites

Release time:2022-06-09

Impact Factor:0.684

DOI number:10.3233/JAE-140094

Affiliation of Author(s):中南大学

Journal:International Journal of Applied Electromagnetics and Mechanics

Key Words:Finite element analysis, electrode finger width, polarization state, strain, stress

Abstract:Finite element analysis was performed on the representative volume element of piezoelectric elements with interdigitated electrodes (IDEs). The variations of piezoelectric material properties during poling were considered in the analysis. The numerical results of models with different piezoelectric polarization states were compared with the result given by the so called uniform field model. Though different optimum electrode finger widths were obtained for different models, narrower electrode finger could enhance the actuation performance. The models indicated the stress concentrated at the edges of the finger electrode. Wider electrode finger would be beneficial for reducing the risk of material failure. The model with two different polarization states could be used to predict the strain and stress of MFCs with wider electrode finger to minimize the computational complexity. The modeling approach developed in this study allowed for a better understanding on the overall effects in piezoelectric materials with IDE structures.

Co-author:H. Chen, C. Jiang

First Author:X. Lin

Indexed by:Journal paper

Discipline:Engineering

First-Level Discipline:Materials Science and Engineering

Document Type:J

Volume:46

Issue:4

Page Number:859-866

Translation or Not:no

Date of Publication:2014-10-01

Included Journals:SCI