摘要
给出了微极广义热弹性固体的一般控制方程;研究了在定常磁场作用下具有均匀初始温度的两理想接触微极弹性介质平面分界面上磁热弹性波的传播特性;给出了分别在缺少磁场、热场作用或不同广义热传导理论下反射或折射热波、纵向位移波、耦合横向和微旋转波与入射纵向位移波的振幅比随入射角变化的关系曲线,讨论了热松弛及磁场对振幅比的影响。结果表明:热松弛时间及磁场对振幅比均有显著影响,改变热松弛时间或磁场强度可以明显改变波的传播形式。
A model of micropolar generalized magneto-thermo-elasticity was presented. Using gen- eralized magneto-thermo-elasticity, the propagation of longitudinal displacement wave at the interface of two-welded isotropic, homogeneous, micropolar elastic medium was studied in the presence of a constant magnetic field. Using continuous conditions at the interface, the amplitude ratios for the reflected and refracted micropolar magneto-thermo-elastic longitudinal micro-rotational waves or coupled transverse and micro-rotational waves were studied for incident longitudinal displacement wave. The numerical results of the amplitude ratios show that the effects of the thermal relaxation times and the magnetic field on the amplitude ratios are very significant.
出处
《微纳电子技术》
CAS
2007年第1期26-29,共4页
Micronanoelectronic Technology
基金
Supported by the National Natural Science Foundation of China(10502041)
The Scientific Research Foundation of Henan University of Science&Technology(0504021
2006QN017)
The Sustentation Fund Youth Skeleton Teacher in University of Henan Province
关键词
热松弛时间
微极广义磁热弹性
纵向位移波
反射
折射
thermal relaxation time
micropolar magneto-thermo-elasticity
longitudinal displacement wave
reflection
refraction
