View source for 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:

{| 
| style="background:yellow; color:black; width:800px" | '''uniaxialMaterial Concrete01WithSITC $matTag $fpc $epsc0 $fpcu $epsU <$endStrainSITC>'''
|}

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{|
|  style="width:150px" | '''$matTag ''' || integer tag identifying material
|-
|  '''$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)


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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.


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Code Developed by: <span style="color:blue"> Won Lee, Stanford </span>