The work is concerned with the wave propagation at the interface of isolated exponentially graded couple stress thermoelastic media under initial stress and gravity. We analyse the influence of initial stress and gravity on reflection and refraction coefficients for both upper and lower couple stress thermoelastic half-spaces. Further, we found there are three waves, viz. quasi-SV and set of two longitudinal waves propagating with different speeds. The phase speeds, equation of motions, reflection and refraction coefficients are calculated in closed form. The impact of gravity and initial stress parameter has also been calculated numerically and shown graphically.

中文翻译：

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初始应力和重力作用下功能梯度各向同性偶应力热弹性固体介质中的平面波传播

这项工作涉及在初始应力和重力作用下，孤立指数级耦合应力热弹性介质界面处的波传播。我们分析了初始应力和重力对上下耦合应力热弹性半空间的反射系数和折射系数的影响。此外，我们发现有三个波，即。准SV和以不同速度传播的两个纵向波的集合。相速度，运动方程，反射系数和折射系数以封闭形式计算。重力和初始应力参数的影响也已通过数值计算并以图形方式显示。