Frictional moving contact over the surface between a rigid punch and piezomagnetic materials - Terfenol-D as example

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:50

Article

Zhou, Yue-Ting¹  Kim, Tae-Won¹ 

[1] Hanyang Univ, Sch Mech Engn, Seoul 133791, South Korea

关键词: Frictional moving contact;    Piezomagnetic materials;    Friction coefficient;    Exact solutions;    Surface damage;   

DOI  :  10.1016/j.ijsolstr.2013.08.015

来源: Elsevier

【 摘 要 】

A general theory of the frictional moving contact of piezomagnetic materials indented by a flat or cylindrical punch is set up. The rigid punch moves at a constant speed and the Coulomb friction law applies inside the contact region. Terfenol-D with high magnetostriction and coupling is chosen. Employing the Galilean transformation and Fourier transform, Cauchy integral equations of the second kind are obtained and solved exactly. Closed-form expressions of physical quantities on the surface in terms of elementary functions are given. Numerical analyses are conducted to reveal the effects of the friction coefficient and moving speed of the punch on various surface stresses and magnetic induction. The singularity, discontinuity and spike of the surface magnetic induction may be important factors to explain why surface damage occurs for piezomagnetic materials. (C) 2013 Elsevier Ltd. All rights reserved.

【 授权许可】

Free