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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers. Part K, Journal of Multi-body Dynamics >Three-dimensional shear and compressional wave propagation of multiple point sources in fluid-saturated elastic porous media
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Three-dimensional shear and compressional wave propagation of multiple point sources in fluid-saturated elastic porous media

机译：流体饱和弹性多孔介质中多点源的三维剪切和压缩波传播

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摘要

A multiple point source model is developed in this research for studying both shear and compressional spherical wave propagation in a non-viscous fluid-saturated elastic porous medium. Relative displacement between the fluid and solid of the medium is quantified by the spherical wave governing equations, such that the waves described are more representative to that in engineering practices. The shear wave has shown significant influences on the characteristics of superposed shear and compressional waves generated by multiple point sources. Utilization of multiple point sources shows higher efficiency and effectiveness in generating desired waves, in comparing with that of single source. Specifically, the multiple sources model is more energy effective in comparing with the single source model by always producing larger magnitudes of relative displacement than a single source with the same energy, which becomes more significant when the distance between the source and the considered geological particles increases. Multiple point sources also show advantages on duration, direction control and magnitude adjustment for the waves generated. Numerical analyses are performed for comparing different shear, compressional and the superposed wave responses under single and multiple sources.
机译：在本研究中，开发了一个多点源模型，用于研究非粘性流体饱和弹性多孔介质中的剪切波和压缩球面波传播。介质的流体和固体之间的相对位移通过球形波控制方程式进行量化，从而使所描述的波在工程实践中更具代表性。剪切波对多点源产生的叠加剪切波和压缩波的特性表现出显着影响。与单源相比，多点源的利用在产生所需波方面显示出更高的效率和有效性。具体而言，与总是具有相同能量的单个源相比，多源模型始终比单个源具有更大的相对位移量，因此与单个源模型相比，能源效率更高，当源与所考虑的地质粒子之间的距离增加时，该显着性就变得更加重要。 。多点源在产生的波的持续时间，方向控制和幅度调整方面也显示出优势。进行了数值分析，以比较单个和多个源下不同的剪切，压缩和叠加波响应。

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