Stabilized single-point 4-node quadrilateral element for dynamic analysis of fluid saturated porous media |
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| Authors: | Christopher R McGann Pedro Arduino Peter Mackenzie-Helnwein |
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| Institution: | 1. Department of Civil and Environmental Engineering, University of Washington, Box 352700, Seattle, WA, 98195, USA
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| Abstract: | An accurate and efficient low-order quadrilateral mixed u?Cp element suitable for dynamic analysis of fluid saturated porous media is presented. The element uses physical hourglass stabilization to facilitate single-point integration for the solid phase, and non-residual stabilization of the fluid phase to circumvent instability in the incompressible-impermeable limit due to the use of equal-order interpolation for the displacement and pressure fields. Element behavior is verified and demonstrated through several numerical examples. |
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