*SORPTION
18.26 *SORPTION: Define absorption and exsorption behavior.
This option is used to define absorption and exsorption behaviors of a partially saturated porous m edium 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 ofthe ABAQUS Analysis User ’sManual
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 re peated use of
the option for the same material).
Set TYPE=SCANNING to define the scanning line (this must be a repeated use of the option
for the same material).
Data lines for TYPE=ABSORPTION or TYPE=EXSORPTION and LAW=TABULAR:
First line:
1. Porepressure, ,with the condi tion .(UnitsofFL
−2.)
2. Saturation, s. This value must lie in the range .
Repeat this data line as often as necessary to define the relationship between and sfrom 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 L2F−1 .)
18.26–1
ABAQUS Version 6.1 Module: ID:
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