# *CONCRETE COMPRESSION HARDENING

 Define hardening in compression for the concrete damaged plasticity model. This option is used to define the compression hardening data for the concrete damaged plasticity material model. It must be used in conjunction with the CONCRETE DAMAGED PLASTICITY and CONCRETE TENSION STIFFENING options. In addition, the CONCRETE TENSION DAMAGE and/or CONCRETE COMPRESSION DAMAGE options can be used to specify tensile and/or compressive stiffness degradation damage.
 Related Topics *CONCRETE DAMAGED PLASTICITY *CONCRETE TENSION STIFFENING *CONCRETE TENSION DAMAGE *CONCRETE COMPRESSION DAMAGE In Other Guides Concrete damaged plasticity

ProductsAbaqus/StandardAbaqus/ExplicitAbaqus/CAE

TypeModel data

LevelModel

Abaqus/CAEProperty module

## Optional parameters

DEPENDENCIES

Set this parameter equal to the number of field variable dependencies included in the definition of the compressive yield stress, in addition to temperature. If this parameter is omitted, the compressive yield stress depends only on the inelastic strain, the strain rate, and, possibly, on temperature. See Material data definition for more information.

## Data lines to define compressive hardening

First line
1. Yield stress in compression, $σc$. (Units of $FL-2$.)

2. Inelastic (crushing) strain, $ε~ci⁢n$.

3. Inelastic (crushing) strain rate, $ε~˙ci⁢n$. (Units of $T-1$.)

4. Temperature.

5. First field variable.

6. Second field variable.

7. Etc., up to four field variables.

The first point at each value of temperature must have a crushing strain of 0.0 and gives the initial yield stress value, $σc⁢0$.

Subsequent lines (only needed if the DEPENDENCIES parameter has a value greater than four)
1. Fifth 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 yield stress on crushing strain, crushing strain rate, and other predefined field variables.