This work uses peridynamic theory to obtain the internal force density of a shear horizontal (SH) wave, which is only connected with shear modulus. We then established the reflection equation of a SH wave in peridynamic medium based on the force boundary condition of the SH wave at the virtual boundary layer. The SH wave reflection characteristic in peridynamic medium is similar to the results of traditional theory, which was verified by simulations and experiments in steel plates. The refraction characteristics of a SH wave in peridynamic medium were obtained based on the continuity of the force and the displacement at the refraction point. These features established the relationship between bonds and wave angle. The refraction and reflection characteristics of a SH wave in a peridynamic medium were also verified by numerical simulations and experiments in a welded structure.

中文翻译：

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横动力介质中水平剪切波的反射和折射

这项工作使用周动力理论来获得水平剪切（SH）波的内力密度，该水平力仅与剪切模量有关。然后，根据虚拟边界层上SH波的力边界条件，建立了在周围动力介质中SH波的反射方程。绕动介质中SH波的反射特性与传统理论的结果相似，已通过在钢板上的仿真和实验得到了验证。基于力的连续性和在折射点处的位移，获得了绕动介质中SH波的折射特性。这些特征建立了键与波角之间的关系。