期刊
COMMUNICATIONS IN NUMERICAL METHODS IN ENGINEERING
卷 22, 期 5, 页码 357-375出版社
JOHN WILEY & SONS LTD
DOI: 10.1002/cnm.818
关键词
electric vector potential; three-dimensional finite element analysis; gauge condition; piezoelectricity; ferroelectricity
A vector potential for the electric induction is applied to static three-dimensional fully coupled electromechanical problems. A Coulomb gauge condition imposed on the electric vector potential improves the convergence behaviour of nonlinear problems, and in combination with a discrete set of Dirichlet boundary conditions, it can enforce unique vector potential solutions. Based on a spectral analysis of the stiffness matrix, the Coulomb gauge is compared with other gauge conditions. A penalized version of the weak vector potential formulation with Coulomb gauge is proposed and tested on some numerical examples in electrostatics, piezoelectricity and ferroelectricity. Copyright (c) 2005 John Wiley & Sons, Ltd.
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