在初始应力作用下磁热粘弹波的传播

本文研究在初始应力作用下导热导电粘弹体内平面波的传播.首先导出有初始应力存在时电磁场、位移场、温度场所满足的基本方程然后用它研究了流体静压力或张力及单轴压或张的初始应力条件下,磁——热——粘弹平面波的传播特性.讨论了弱耦合情况下,热效应磁场对波传播特性的影响.在无初始应力存在并略去热、磁耦合效应时,所得结果变成经典的粘弹波结果. 

MAGNETO-THERMO-VISCOELASTIC PLANE WAVES IN AN INITIALLY STRESSED MEDIUM

This paper is concerned with the plane waves in a magneto-thermo-viscoelastie initially stressed medium. Firstly, the basic equations of motion to be satisfied by the electromagnetic, displacement and temperature fields of a magneto-thermo-viseoe-lastic medium under initial stress have been deduced. They are then employed to investigate the propagation of plane waves in a magnetothermo-viscoelastic medium under two cases of initial stress: a) hydrostatic compression or tension; b) uniaxial compression or extension, and then the influence of weak coupling on the propagation of waves of the thermal and magnetic effect was studied. The results obtained are in complete agreement with the corresponding classical visco-elastic problems when the initial stress, thermal and magnetic couplings are absent.