4.7 Article

A stabilized single-point finite element formulation for three-dimensional dynamic analysis of saturated soils

Journal

COMPUTERS AND GEOTECHNICS
Volume 66, Issue -, Pages 126-141

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.compgeo.2015.01.002

Keywords

Hourglass stabilization; Reduced integration; Saturated soils; Finite element method

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A low-order single-point quadrature finite element suitable of dynamic 3D analysis of saturated soils is presented. The new element uses a u-p formulation to consider the interaction of the pore fluid and solid skeleton. An hourglass stabilization scheme facilitates single-point integration for the solid phase terms, and non-residual pressure field stabilization is used to facilitate equal-order interpolation for the two phases and improve element behavior in the incompressible-impermeable limit. Several numerical examples are presented to verify the new element formulation and demonstrate its response in a geotechnical application. (C) 2015 Elsevier Ltd. All rights reserved.

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