ABAQUS Volume II: I–Z - Manual (Page 575)

*TRIAXIAL TEST DATA
19.13 *TRIAXIAL TEST DATA: Provide triaxial test data.
This option is required if some or all of the material parameters that define the exponent form of the
*DRUCKER PRAGER option are to be calibrated from triaxial test data.
Product: ABAQUS/Standard
Type: Model data
Level: Model
Reference:
•
“Extended Drucker-Prager models,” Section 18.3.1 of the ABAQUS Analysis User’s Manual
Optional parameters:
A
Set this parameter equal to the value of the material constant a if it is known and is held fixed at the
input value. Omit the parameter and its value if a is to be obtained from the calibration.
B
Set this parameter equal to the value of the material constant b if it is known and is held fixed at the
input value. Omit the parameter and its value if b is to be obtained from the calibration.
PT
Set this parameter equal to the value of the material constant if it is known and is held fixed at
the input value. Omit the parameter and its value if is to be obtained from the calibration.
Data lines to specify triaxial test data:
First line:
1. Sign and magnitude of confining stress, .
2. Sign and magnitude of the stress in loading direction, .
Repeat this data line as often as necessary to give the yield stress at different levels of confining stress.
19.13–1
ABAQUS Version 6.1 Module: ID:
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