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Stresses Near the End of an Internal Electrode in Multilayer Electrostrictive Ceramic Actuators

Published online by Cambridge University Press:  16 February 2011

Xiao-Yan Gong
Xiao-Yan Gong*
Affiliation:
Department of Mechanical and Environmental Engineering, University of California at Santa Barbara, Santa Barbara, CA 93106
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Abstract

Stresses near the end of an internal electrode in a multilayer electrostrictive ceramic actuator are studied in detail. A finite element program capable of overcoming two major difficulties is developed. The program solves both the mechanical and electrical coupling problem and the nonlinear electric field and electric displacement relationship for these materials. Results indicate that the stress difference between the coupled and the uncoupled cases can only be distinguished when a stress singularity is present. Tensile stresses are found both in front, and behind, the end of an internal electrode. The magnitude of the stresses is predetermined by the material constants.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 360 , 1994 , 83
Copyright
Copyright © Materials Research Society 1995

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