Contact problem for magneto-electro-elastic half-plane materials indented by a moving punch. Part II: Numerical results

In Part I of this series of papers, an exact contact analysis of magneto-electro-elastic half-plane materials indented by a moving rigid punch is theoretically performed. The present paper, which is Part II of the series, presents a numerical analysis for the same moving contact problem based on the theoretical model developed in Part I. A BaTiO3-CoFe2O4 composite is chosen for the numerical computation. The effects of the relative moving velocity on the eigenvalue distribution are detailed and suggest that the relative moving velocity values should be kept within the unite interval in a practical computation. Numerical results of the contact behaviors are presented. These results both justify the derivation of the closed-form solutions obtained in Part I and show the validity of the present program. The influences on the contact behaviors of the relative moving velocity, geometry loading, and magneto-electro properties of the indentation by a flat or cylindrical punch are detailed. The physics behind the differences in different surface contact conditions are revealed. The surface damage mechanism for magneto-electro-elastic half-plane materials is discussed to optimize their design and service. The results present in this paper may provide a theoretical basis for magneto-electro-elastic materials characterizations. (C) 2012 Elsevier Ltd. All rights reserved.