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

20 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

Funding

The authors would like to acknowledge the supports from Northwestern’s Center for Surface Engineering and Tribology, and the National Science Foundation of China under grants: 51775458 , 11672252 and 51775457 . Xin Zhang would also like to express sincere gratitude to the fellowship support from China Scholarship Council under grant No. 201607000075 .

Keywords

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

ASJC Scopus subject areas

  • Modeling and Simulation
  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Applied Mathematics

Fingerprint

Dive into the research topics of 'Dynamic contact in multiferroic energy conversion'. Together they form a unique fingerprint.

Cite this