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SORPTION
18.26
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SORPTION: Define absorption and exsorption behavior.
This option is used to define absorption and exsorption behaviors of a partially saturated porous medium in
the analysis of coupled wetting liquid flow and porous medium stress.
Product: ABAQUS/Standard
Type: Model data
Level: Model
Reference:
•
“Sorption,” Section 20.7.4 of the ABAQUS Analysis User’s Manual
Optional parameters:
LAW
Set LAW=LOG to define the absorption or exsorption behavior by the analytical logarithmic form.
Set LAW=TABULAR (default) to define the absorption or exsorption behavior in tabulated
form.
TYPE
Set TYPE=ABSORPTION (default) to define the absorption behavior.
Set TYPE=EXSORPTION to define the exsorption behavior (this must be a repeated use of
the option for the same material).
Set TYPE=SCANNING to define the scanning line (t his must be a repeated use of the option
for the same m aterial).
Data lines for TYPE=ABSORPTION or TYPE=EXSORPTION and LAW=TABULAR:
First line:
1. Pore pressure, , with the condition .(UnitsofFL
−2
.)
2. Saturation, s. This value must lie in the range
.
Repeat this data line as often as necessar y to define the relationship between and s from to
in increasing values of s. At least two data lines must be specified.
Data line for TYPE=ABSORPTION or TYPE=EXSORPTION and LAW=LOG:
First (and only) line:
1. A. This value must be positive. (Dimensionless.)
2. B. This value must be positive. (Units of L
2
F
−1
.)
18.26–1
ABAQUS Version 6.1 Module:
ID:
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