Concrete02

uniaxialMaterial Concrete02 $matTag $fpc $epsc0 $fpcu $epsU 
        $lambda $ft $Ets

matTag

integer tag identifying material

fpc

concrete compressive strength at 28 days (compression is negative)*

epsc0

concrete strain at maximum strength*

fpcu

concrete crushing strength *

epsU

concrete strain at crushing strength*

lambda

ratio between unloading slope at \(epscu and initial slope</p></td> </tr> <tr class="odd"> <td><code class="parameter-table-variable">ft</code></td> <td><p>tensile strength</p></td> </tr> <tr class="even"> <td><code class="parameter-table-variable">Ets</code></td> <td><p>tension softening stiffness (absolute value) (slope of the linear tension softening branch)</p></td> </tr> </tbody> </table> <p>NOTE:</p> <ul> <li>Compressive concrete parameters should be input as negative values.</li> </ul> <ul> <li>The initial slope for this model is (2*\)fpc/$epsc0)

REFERENCE:

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

Concrete02.jpg

Comparison of Hysteretic Stress-Strain Relation for Concerete01 versus Concrete02 materials.

Concrete02Hysteretic.jpg

Code Developed by: Filip Filippou, UC Berkeley

Images Developed by: Silvia Mazzoni

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