Concrete01WithSITC

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

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