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ELEMENTS
8.
Elements
This chapter discusses elements available in Abaqus. It provides an overview of the following enhancements:
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8.1
“New linear pore pressure elements,” Section 8.1
“Tapered beams and improved mass formulation,” Section 8.2
“New 6-node triangular prism for fluid flow problems,” Section 8.3
New linear pore pressure elements
Products: Abaqus/Standard
Abaqus/CAE
Benefits: The pore pressure element library in Abaqus/Standard now includes both linear tetrahedral
(C3D4P) and linear wedge (C3D6P) elements. These elements add modeling flexibility for coupled pore
pressure-displacement analyses.
Description: Pore pressure elements are provided in Abaqus/Standard for modeling fully or partially
saturated fluid flow through a deforming porous medium. These two new elements support all of the
loadings, material behaviors, and contact interactions supported by existing pore pressure elements.
Abaqus/CAE Usage:
Mesh module:
Mesh→Element Type: Family: Pore Fluid/Stress
References:
Abaqus Analysis User’s Manual
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“Coupled pore fluid diffusion and stress analysis,” Section 6.8.1
“Three-dimensional solid element library,” Section 25.1.4
Abaqus/CAE User’s Manual
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“Element type assignment,” Section 17.5.3
Abaqus Example Problems Manual
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“Calculation of phreatic surface in an earth dam,” Section 10.1.2
Abaqus Benchmarks Manual
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“Partially saturated flow in a porous medium,” Section 1.9.1
“Demand wettability of a porous medium: coupled analysis,” Section 1.9.2
“Wicking in a partially saturated porous medium,” Section 1.9.3
“Desaturation in a column of porous material,” Section 1.9.4
8–1
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