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Using micropolar generalized thermoviscoelastic theories, problems of reflection and refraction of magneto-thermoeviscoelastic waves at the interface between two viscoelastic media are studied when a uniform magnetic field permeates the media. Coefficient ratios of reflection and refraction are obtained using continuous boundary conditions. Some special cases are considered, i.e., the absence of micropolar and viscous effects. By numerical calculations, variations of the amplitude ratios of reflection and refraction coefficients with the angle of incidence are shown graphically for incident rotational and dilatational waves at the interface between two media (one medium is aluminium-epoxy micropolar iscoelastic material, and the other is magnesium crystal micropolar viscoelastic material). Comparing the generalized thermoelastic theories developed by Lord and Shulman (LS) and by Green and Lindsay (GL) in this paper to conventional dynamics (CD) theory the effects of a magnetic field and viscosity are shown numerically in this paper. 相似文献
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The effect of the motion of a plane reflecting surface on the angle of reflection of light waves is considered. The dependence of the difference in the angles of incidence and reflection on the increase in the velocity of motion of the reflecting surface and the increase in the angle of incidence is determined.__________Translated from Izmeritel’naya Tekhnika, No. 5, pp. 40–41, May, 2005. 相似文献
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粘弹性材料覆盖层对于声波透射及反射的衰减作用 总被引:2,自引:0,他引:2
本文采用Thomson Haskell方法计算了在钢板上覆盖橡胶和高分子聚合物对于反射及透射声波所产生的影响 ,并且研究了在橡胶层下填充不同厚度的粘弹性高分子聚合物对于压力声波的衰减作用。本文还给出了具有不同空洞体积比的填充材料的减噪效果。 相似文献
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