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TIME-DOMAIN EXPLICIT FINITE-ELEMENT METHOD FOR DYNAMIC ANALYSIS OF TRANSVERSELY ISOTROPIC FLUID-SATURATED POROUS MEDIA

卷 21, 册 9, 2018, pp. 793-811
DOI: 10.1615/JPorMedia.2018016221
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摘要

We present a time-domain, explicit, finite-element method (FEM) for dynamic analysis of transversely isotropic fluid-saturated porous media (TIFSPM). Wave propagation equations in TIFSPM are derived based on continuum mechanics. An explicit FE procedure for solving wave propagation equations is developed by applying the decoupling technique in the spatial domain and central difference method and the Newmark constant average acceleration method in the time domain. The explicit FEM is applied to simulate dynamic response of TIFSPM, and simulation results are compared with dynamic response of isotropic fluid-saturated porous media (IFSPM). Parametric studies are performed on the anisotropy coefficient to investigate the effect of material anisotropy on TIFSPM dynamic response. We find that dynamic response of TIFSPM is significantly different from that of IFSPM, and anisotropy impacts largely on TIFSPM dynamic response.

对本文的引用
  1. Jiao Hongyun, Li Liang, Du Xiuli, Shi Peixin, Wang Man, A finite element-thin layer element coupling method for near-field wave propagation in fluid-saturated porous media based on u-U dynamic formulation, Soil Dynamics and Earthquake Engineering, 158, 2022. Crossref

  2. Xu Chengshun, Feng Chaoqun, Song Jia, Du Xiuli, Zhao Mi, A novel completely explicit algorithm to solve dynamic -p equations of saturated soil, Soil Dynamics and Earthquake Engineering, 141, 2021. Crossref

  3. Liang Li, Jingru Xu, Xiuli Du, Jia Song, A fully explicit staggered algorithm for near‐field wave propagation of fluid‐saturated porous media based on u ‐ p dynamic formulation , International Journal for Numerical and Analytical Methods in Geomechanics, 2022. Crossref

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