ABAQUS Keywords Reference Manual  

*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:

Optional parameters:

A

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.

B

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.

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.