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Finite-strain consolidation finite-element method subject to non-conservative body force[J]. Chinese Journal of Theoretical and Applied Mechanics, 2009, 41(1): 91-97. DOI: 10.6052/0459-1879-2009-1-2008-224
Citation: Finite-strain consolidation finite-element method subject to non-conservative body force[J]. Chinese Journal of Theoretical and Applied Mechanics, 2009, 41(1): 91-97. DOI: 10.6052/0459-1879-2009-1-2008-224
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Finite-strain consolidation finite-element method subject to non-conservative body force

  • Received Date: April 08, 2008
  • Revised Date: June 19, 2008
    Graphical Abstract
    • Abstract
  • Numerical analysis of finite-strain consolidation is investigatedby finite element method with non-conservative body force. Firstly, amodified static equilibrium equation for finite-strain consolidation isproposed during the consolidation process of saturated soils using TotalLagrangian description with non-conservative body force. Secondly, thecorresponding incremental finite-element (FE) )formulations of finite-strainconsolidation are presented with the substitution of the non-conservativebody force for a fellow body force. Both the equilibrium equation and thenew FE formulations can be reduced to the traditional conservative forms byneglect of the volume strain of soils, respectively. A case of finite-strainself-weight consolidation was presented to study the significance ofnon-conservative body force. The numerical results show that traditionalmethod underestimates the consolidation degree of foundation, butoverestimates the consolidation settlement and excess pore water pressure.The present finite-strain consolidation analysis based on non-conservativebody force is available to precisely predict the consolidation behavior offoundation.
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