Dynamic contact in multiferroic energy conversion

Xin Zhang, Zhanjiang Wang, Huoming Shen, Q. Jane Wang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

This paper reports a semi-analytical model (SAM) for simulating the dynamic contact of a rigid sphere and the surface of a multiferroic magnetoelectroelastic (MEE) film under an increasing applied force. The frequency response functions (FRFs) and their conversion into influence coefficients (ICs) for the MEE film are analytically derived, incorporating the loading velocity in a dynamic process. Fast numerical techniques, including the conjugate gradient method (CGM) and the fast Fourier transform (FFT), are employed for efficient numerical solutions to the dynamic contact behaviors, including the distributions and variations of contact pressure and electric/magnetic potentials, as well as subsurface stresses. The proposed model is implemented to analyze the influences of loading velocity, film thickness, and sphere radius on the dynamic MEE responses, including pressure/stresses and electric/magnetic potentials. An energy conversion factor is selected to evaluate the performance of MEE energy conversion. Furthermore, a sensitivity analysis is conducted to evaluate the influence of material properties and their coupling on the efficiency of mechanical–electric/magnetic energy conversion.

Original languageEnglish (US)
Pages (from-to)84-102
Number of pages19
JournalInternational Journal of Solids and Structures
Volume143
DOIs
StatePublished - Jun 15 2018

Keywords

  • Dynamic contact
  • Energy conversion
  • Multiferroic film
  • Semi-analytical modeling

ASJC Scopus subject areas

  • Modeling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Applied Mathematics

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