3.1.5.12. Concrete02 Material – Linear Tension Softening

This command is used to construct a uniaxial concrete material as described in [Yassin1994] .. function:: uniaxialMaterial Concrete02 $matTag $fpc $epsc0 $fpcu $epsU $lambda $ft $Ets

Argument	Type	Description
$matTag	integer	integer tag identifying material.
$fpc	float	concrete compressive strength at 28 days (compression is negative)* .
$epsc0	float	concrete strain at maximum strength* .
$fpcu	float	concrete crushing strength*.
$epsU	float	concrete strain at crushing strength*.
$lambda	float	ratio between unloading slope at $epscu and initial slope.
$ft	float	tensile strength.
$ets	float	tension softening stiffness (absolute value) (slope of the linear tension softening branch)

Note

• Compressive concrete parameters should be input as negative values (if input as positive, they will be converted to negative internally).

• The initial slope for this model is (2*$fpc/$epsc0)

Typical Hysteretic Stress-Strain Relation for material

Comparison with Concrete01

Code Developed by: Filip Filippou, UC Berkeley Images Developed by Silvia Mazzoni

[Yassin1994]

Mohd Hisham Mohd Yassin, “Nonlinear Analysis of Prestressed Concrete Structures under Monotonic and Cycling Loads”, PhD dissertation, University of California, Berkeley, 1994.