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<p>Interface defects or weak bondings often induce the degradation of multiphysics coupling properties in intelligent magnetoelectric structures during operational contact situations. This study develops a computational model combining the hybrid element method to solve transient contact responses of the polymer-based magnetoelectric coating imperfectly bonded to a magneto-electro-elastic substrate with efficiency. The interfacial discontinuity of mechanical and electromagnetic fields is characterized by five imperfection indices, quantifying the discontinuous transfer of the displacement, electric potential, and magnetic potential across the coating–substrate interface. Time-dependent relaxation functions are employed to derive viscoelastic frequency response functions by replacing the corresponding elastic Green’s function based on the elastic–viscoelastic correspondence principle. Parametric analyses are conducted to investigate the effect of the film thickness, friction coefficient, action time, and imperfection index. Numerical simulations under five distinct interfacial conditions show that interfacial imperfections can lead to stress redistribution or concentration, enhance the viscoelastic friction, and modulate magnetoelectric coupling. This study can provide a theoretical basis for structural reliability and performance optimization.</p>

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Interfacial discontinuity effects on transient contact response of polymer-based magnetoelectric coatings with smart composite substrates via hybrid element method

  • 期刊论文

  • 发表日期：

    2026年5月11日

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  • Chi Hu,
  • Huoming Shen,
  • Jialing Li,
  • Yuxing Wang,
  • Peng Li,
  • Guoyong Zhang,
  • Yang Hai,
  • Xin Zhang

摘要

Interface defects or weak bondings often induce the degradation of multiphysics coupling properties in intelligent magnetoelectric structures during operational contact situations. This study develops a computational model combining the hybrid element method to solve transient contact responses of the polymer-based magnetoelectric coating imperfectly bonded to a magneto-electro-elastic substrate with efficiency. The interfacial discontinuity of mechanical and electromagnetic fields is characterized by five imperfection indices, quantifying the discontinuous transfer of the displacement, electric potential, and magnetic potential across the coating–substrate interface. Time-dependent relaxation functions are employed to derive viscoelastic frequency response functions by replacing the corresponding elastic Green’s function based on the elastic–viscoelastic correspondence principle. Parametric analyses are conducted to investigate the effect of the film thickness, friction coefficient, action time, and imperfection index. Numerical simulations under five distinct interfacial conditions show that interfacial imperfections can lead to stress redistribution or concentration, enhance the viscoelastic friction, and modulate magnetoelectric coupling. This study can provide a theoretical basis for structural reliability and performance optimization.