The present paper delves the propagation behavior of horizontally polarized shear waves (SH-wave) influenced by micro-scale size effects in two distinct models i.e. functionally graded piezomagnetic material (FGPMM) layer overlying micropolar substrate (Model I) and functionally graded piezoelectric material (FGPEM) layer overlying micropolar substrate (Model II). The dispersion equations of SH-wave propagating in Model I and II have been deduced for open and short circuit conditions in distinct cases. The results are observed to be in well-agreement with the classical case of dispersion equation of Love wave. Emphatic influence of affecting parameters, viz. material gradient factors, characteristic length, micropolarity, and thickness of piezo material layers on the phase velocities of SH-waves has been analyzed through graphical illustrations. The graphs for mechanical coupling factors and group velocity of SH-wave propagating in the considered composite structures are also scrutinized. The novelty of this article is the comparative study of Model I and Model II on the propagation behavior of SH-wave and mechanical coupling factors.

本论文研究了水平极化剪切波 (SH 波) 在两种不同模型中受微尺度尺寸效应影响的传播行为，即覆盖微极衬底的功能梯度压磁材料 (FGPMM) 层 (模型 I) 和功能梯度压电材料 ( FGPEM) 层覆盖在微极基板 (Model II) 上。推导了模型 I 和模型 II 中 SH 波传播的色散方程，用于不同情况下的开路和短路条件。观察到结果与经典的Love波色散方程非常吻合。影响参数的重要影响，即。材料梯度因素、特征长度、微极性和压电材料层厚度对 SH 波相速度的影响已通过图解说明进行了分析。还仔细检查了在所考虑的复合结构中传播的 SH 波的机械耦合因子和群速度的图表。本文的新颖之处在于模型Ⅰ和模型Ⅱ对SH波传播行为和机械耦合因素的比较研究。