*RATIOS
17.9 *RATIOS: Define anisotropicswelling.
This option is used to specify ratios that define anisotropic swelling. The *RATIOSoption can be used only
in conjunction with the *MOISTURE SWELLING option or the *SWELLING option, and it should appear
immediately after either one.
Product: ABAQUS/Standard
Type: Model data
Level: Model
References:
•“Moisture swelling,” Section 20.7.6of the ABAQUS Analysis User ’sManual
•“Rate-dependentplasticity: creep and swelling,” Section 18.2.4 of the ABAQUS Analysis User’s Manual
•*MOISTURE SWELLING
•*SWELLING
Optional parameter when the *RATIOS option is used with the *SWELLING option:
DEPENDENCIES
Set this parameter equal to the number of field variable dependencies included in the definition of
the anisotropy ratios in addition to temperature. Ifthis pa rameter is omitted, it is assumed that the
ratios depend only on temperature. See “Specifying field variable dependence” in “Material data
definition,” Section 16.1.2of the ABAQUS Analysis User ’sManual, for more information.
Data lines to define anisotropic swelling ratios:
First line:
1.
2.
3.
4. Temperature. This value and all of the following field variables can be defined only if the
*RATIOSoption is used with the *SWELLING option.
5. Firstfield variable.
6. Second field variable.
7. Etc., up to four field variables.
17.9–1
ABAQUS Version 6.1 Module: ID:
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