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流体饱和多孔介质黏弹性动力人工边界

, PP. 54-59

Keywords: 流体饱和多孔介质,黏弹性动力人工边界,有限元法

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Abstract:

基于Biot流体饱和多孔介质本构方程,采用平面波和远场散射波经验叠加来反映外行波传播,以经验参数反映人工边界外行波动的衰减和多角度透射特性.在人工边界处分别施加反映固相和液相介质传播效应的弹簧及阻尼来模拟人工边界以外的无限域介质对来自有限域的外行波的能量的吸收作用.从而形成一种流体饱和多孔介质的黏弹性动力人工边界.数值算例表明边界的精度和稳定性高于现有的黏性边界、黏弹性人工边界及一阶透射边界.

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