Application of the homopoty analysis method to nonlinear characteristics of a piezoelectric semiconductor fiber
APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION(2021)
Abstract
Based on the nonlinear constitutive equation, a piezoelectric semiconductor (PSC) fiber under axial loads and Ohmic contact boundary conditions is investigated. The analytical solutions of electromechanical fields are derived by the homopoty analysis method (HAM), indicating that the HAM is efficient for the nonlinear analysis of PSC fibers, along with a rapid rate of convergence. Furthermore, the nonlinear characteristics of electromechanical fields are discussed through numerical results. It is shown that the asymmetrical distribution of electromechanical fields is obvious under a symmetrical load, and the piezoelectric effect is weakened by an applied electric field. With the increase in the initial carrier concentration, the electric potential decreases, and owing to the screening effect of electrons, the distribution of electromechanical fields tends to be symmetrical.
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Key words
piezoelectric semiconductor (PSC) fiber, homopoty analysis method (HAM), nonlinear analysis, asymmetrical distribution, screening effect, O343, 5
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