Applied Mathematics and Mechanics (English Edition) ›› 2021, Vol. 42 ›› Issue (5): 665-676.doi: https://doi.org/10.1007/s10483-021-2726-5

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Application of the homotopy analysis method to nonlinear characteristics of a piezoelectric semiconductor fiber

Minghao ZHAO1,2,3, Zelong MA1, Chunsheng LU4, Qiaoyun ZHANG1,3   

  1. 1. School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou 450001, China;
    2. School of Mechanical Engineering, Zhengzhou University, Zhengzhou 450001, China;
    3. Henan Key Engineering Laboratory for Anti-Fatigue Manufacturing Technology, Zhengzhou University, Zhengzhou 450001, China;
    4. School of Civil and Mechanical Engineering, Curtin University, Perth 6845, Australia
  • Received:2020-12-13 Revised:2021-02-08 Online:2021-05-01 Published:2021-04-22
  • Contact: Qiaoyun ZHANG, E-mail:zhangqy@zzu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China (Nos. 11702251 and 12002316)

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 homotopy 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.

Key words: piezoelectric semiconductor (PSC) fiber, homotopy analysis method (HAM), nonlinear analysis, asymmetrical distribution, screening effect

2010 MSC Number: 

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