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*CONCRETE COMPRESSION DAMAGE
Define compression damage properties for the concrete damaged plasticity model.

This option is used to define compression damage (or stiffness degradation) properties for the concrete damaged plasticity material model. The *CONCRETE COMPRESSION DAMAGE option must be used in conjunction with the *CONCRETE DAMAGED PLASTICITY, *CONCRETE TENSION STIFFENING, and *CONCRETE COMPRESSION HARDENING options. In addition, the *CONCRETE TENSION DAMAGE option can be used to specify tensile stiffness degradation damage.

Products: Abaqus/Standard  Abaqus/Explicit  Abaqus/CAE  

Type: Model data

Level: Model  

Abaqus/CAE: Property module

References:

Optional parameters:

DEPENDENCIES

Set this parameter equal to the number of field variable dependencies included in the definition of the compression damage, in addition to temperature. If this parameter is omitted, it is assumed that the compression damage behavior depends only on temperature. See “Specifying field variable dependence” in “Material data definition,” Section 21.1.2 of the Abaqus Analysis User's Guide, for more information.

TENSION RECOVERY

This parameter is used to define the stiffness recovery factor , which determines the amount of tension stiffness that is recovered as the loading changes from compression to tension. If , the material fully recovers the tensile stiffness; if , there is no stiffness recovery. Intermediate values of result in partial recovery of the tensile stiffness. The default value is 0.0.

Data lines to define compression damage: 

First line:

  1. Compressive damage variable, .

  2. Inelastic (crushing) strain, .

  3. Temperature.

  4. First field variable.

  5. Second field variable.

  6. Etc., up to five field variables.

The first point at each value of temperature must have a crushing strain of 0.0 and a compressive damage value of 0.0.

Subsequent lines (only needed if the DEPENDENCIES parameter has a value greater than five):

  1. Sixth field variable.

  2. Etc., up to eight field variables per line.

Repeat this set of data lines as often as necessary to define the dependence of the compressive damage behavior on crushing strain, temperature, and other predefined field variables.