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Interaction and Multiscale Mechanics
  Volume 6, Number 2, June 2013, pages 107-125
open access

Meshfree consolidation analysis of saturated porous media with stabilized conforming nodal integration formulation
Dongdong Wang, Pinkang Xie and Hongsheng Lu

    A strain smoothing meshfree formulation with stabilized conforming nodal integration is presented for modeling the consolidation process in saturated porous media. In the present method, nodal strain smoothing is consistently introduced into the meshfree approximation of strain and pore pressure gradient variables associated with the saturated porous media. Meanwhile, in order to achieve a consistent numerical implementation, a smoothing approximation of the meshfree shape function within a nodal representative domain is also proposed in the stiffness construction. The resulting discrete system of equations is all expressed in smoothed nodal measures that are very efficient for numerical evaluation. Subsequently the space-time fully discrete equations are further established by the generalized trapezoidal rule for time integration. The effectiveness of the proposed meshfree consolidation analysis method is systematically illustrated by several benchmark problems.
Key Words
    meshfree method; consolidation; saturated porous media; strain smoothing; stabilized conforming nodal integration
Dongdong Wang, Pinkang Xie : Department of Civil Engineering, Xiamen University, Xiamen, Fujian 361005, China
Hongsheng Lu : Shanghai Hengstar Technology Co. Ltd., Shanghai 201203, China

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