Stabilized single-point 4-node quadrilateral element for dynamic analysis of fluid saturated porous media

被引:59
|
作者
McGann, Christopher R. [1 ]
Arduino, Pedro [1 ]
Mackenzie-Helnwein, Peter [1 ]
机构
[1] Univ Washington, Dept Civil & Environm Engn, Seattle, WA 98195 USA
关键词
Hourglass stabilization; Locking-free; Reduced integration; Saturated soils; ASSUMED STRAIN STABILIZATION; FINITE-ELEMENTS; FORMULATION; ELASTOPLASTICITY; DEFORMATION; PROPAGATION; BEHAVIOR;
D O I
10.1007/s11440-012-0168-5
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
An accurate and efficient low-order quadrilateral mixed u-p 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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页码:297 / 311
页数:15
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