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讨论三斜晶体介质半空间应力自由边界处三维平面波的传播.给出了1个寻找三维准P(qP)、准SV(qSV)和准SH(qSH)波的所有3个相速度解析表达式的方法.得出了三斜介质中qP、qSV、qSH波反射系数振幅比的三维闭式解,将其用于研究不同入射角时,对应的反射系数的数值变化,给出了不同极角和方位角时的图示.最后通过数值实例表明,与二维的情况相比较,三维各向异性对反射系数的影响更明显.
In this paper, we discuss the propagation of three-dimensional plane wave at the stress-free boundary of half-space of triclinic matrix.Analytic expression of all three phase velocities for finding quasi-P (qP), quasi SV (qSV) and quasi-SH The three-dimensional closed-form solutions of the amplitude ratio of qP, qSV and qSH wave reflection coefficients in triclinic media are obtained, which are used to study the numerical changes of the corresponding reflection coefficients at different angles of incidence. And the azimuth angle.Finally, numerical examples show that the influence of three-dimensional anisotropy on the reflection coefficient is more obvious than that in the two-dimensional case.