Concrete01 Material With Stuff in the Cracks
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This command is used to construct a modified uniaxial Kent-Scott-Park concrete material object with degraded linear unloading/reloading stiffness according to the work of Karsan-Jirsa and no tensile strength. The modification is to model the effect of Stuff In The Cracks (SITC). The command is as follows:
uniaxialMaterial Concrete01WithSITC $matTag $fpc $epsc0 $fpcu $epsU <$endStrainSITC> |
$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* |
$endStrainSITC | optional, default = 0.03 |
NOTE:
- Compressive concrete parameters should be input as negative values.
- The initial slope for this model is (2*$fpc/$epsc0)
REFERENCES:
J.F. Stanton and H.D. McNiven, "The Development of a Mathematical Model to Predict the Flexural Response of Reinforced Concrete Beams to Cyclic Loads, Using System Identification", EERC Report Number 79/02, January 1979.
Code Developed by: Won Lee, Stanford