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首页> 外文期刊>Engineering analysis with boundary elements >Boundary element analysis of the steady-state response of an elastic half-space to a moving force on its surface
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Boundary element analysis of the steady-state response of an elastic half-space to a moving force on its surface

机译：弹性半空间对其表面移动力的稳态响应的边界元分析

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摘要

The paper deals with the boundary element method formulation of the steady-state wave propagation through elastic media due to a source moving with constant velocity. The Green's function for the three-dimensional full-space is formulated in a local frame of reference following the source. This is appropriate for the analysis of, for example, ground borne noise from railway or road traffic. The frequency-domain fundamental solution is derived from the corresponding time-domain solution by means of Fourier transformation. To obtain a closed form solution, a part of the time-domain kernel functions is approximated, but the error which is introduced in this way is insignificant. Numerical examples are given for a moving rectangular load on an elastic half-space. The results from a boundary element code based on the derived Green's function are compared with a semi-analytic solution.
机译：本文研究了声源以恒定速度运动时稳态波通过弹性介质传播的边界元方法公式。三维全空间的格林函数在源之后的局部参考系中制定。例如，这适用于分析来自铁路或公路交通的地面传播噪声。频域基本解是通过傅立叶变换从相应的时域解中得出的。为了获得封闭形式的解决方案，对时域内核函数的一部分进行了近似，但是以这种方式引入的误差却微不足道。给出了在弹性半空间上移动矩形载荷的数值示例。将基于导出的格林函数的边界元素代码的结果与半解析解进行比较。

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