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中文核心期刊

位移阶跃SH波对半圆形凹陷地形的散射

THE SCATTERING OF DISPLACEMENT STE SH-WAVES BY A SEMI-CYLINDRICAL CANYON

  • 摘要: 本文利用积分变换和波函数展开方法求解位移阶跃的平面SH波对半圆形凹陷地形的散射问题,导出了散射位移场的解析表达式,,并给出了在凹陷地形表面上各点位移时程反应的数值结果。本文的结果可做为Duhamel积分的影响系数求解一个随时间任意变化的平面SH波被半圆形凹陷地形散射的问题。

     

    Abstract: The problem of scattering of a plane displacement step SH-wave by a semi-cylindrical c anyon is considered analyt ic alytically Expressions for the displacement field inducedare derived by means of an integral transform technique and expansion of wave funct ions.Numerical results are presented for the points on the surface of the canyon and the halfspace: This result is expected to be used as influence coefficients of Duhamel integral in thesolution of the displacement field due to the time-varying scatter...

     

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