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Applied Mathematics and Mechanics (English Edition) ›› 1999, Vol. 20 ›› Issue (12): 1331-1341.

• 论文 • 上一篇    下一篇

FINITE ELEMENT ANALYSIS OF WAVE PROPAGATION IN FLUID-SATURATED POROUS MEDIA

严波1, 刘占芳1, 张湘伟2   

  1. 1. Department of Engineering Mechanics, Chongqing University, Chongqing 400044, P. R. China;
    2. Shantou University, Shantou 515063, P. R. China
  • 收稿日期:1998-08-07 出版日期:1999-12-18 发布日期:1999-12-18

FINITE ELEMENT ANALYSIS OF WAVE PROPAGATION IN FLUID-SATURATED POROUS MEDIA

Yan Bo1, Liu Zhanfang1, Zhang Xiangwei2   

  1. 1. Department of Engineering Mechanics, Chongqing University, Chongqing 400044, P. R. China;
    2. Shantou University, Shantou 515063, P. R. China
  • Received:1998-08-07 Online:1999-12-18 Published:1999-12-18

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摘要： With the porous media model based on mixture theory,a finite element formulation for dynamic transient analysis of fluid-saturated two-phase porous media is presented.Time integration of the equation,deduced with penalty method,can be performed by using implicit or explicit method.One-dimensional wave propaga tion in column under step loadin g and impulsive loading are analyzed with the devel oped finite element program.The obtained curves of displacements,velocities,ef fective stresses and pore pressures against time demonstrate the existence of wave propagation phenomena,which coincide with the theoretical results.

关键词: porous media;wave propagation;finite element method

Abstract: With the porous media model based on mixture theory,a finite element formulation for dynamic transient analysis of fluid-saturated two-phase porous media is presented.Time integration of the equation,deduced with penalty method,can be performed by using implicit or explicit method.One-dimensional wave propaga tion in column under step loadin g and impulsive loading are analyzed with the devel oped finite element program.The obtained curves of displacements,velocities,ef fective stresses and pore pressures against time demonstrate the existence of wave propagation phenomena,which coincide with the theoretical results.

Key words: porous media;wave propagation;finite element method

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