DoddRestrepo: Difference between revisions

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|  '''$FSHI''' ||  Tensile stress at point on strain hardening curve corresponding to ESHI
|  '''$FSHI''' ||  Tensile stress at point on strain hardening curve corresponding to ESHI
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|-
|  '''$OmegaFac''' || Bauschinger curve roundness factor. Range: [0.75, 1.15].  Largest value tends to near a bilinear Bauschinger curve.  Default = 1.0.
|  '''$OmegaFac''' || Roundedness factor for Bauschinger curve in cycle reversals from the strain hardening curve. Range: [0.75, 1.15].  Largest value tends to near a bilinear Bauschinger curve.  Default = 1.0.
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||  Note:  Stresses and strains are defined engineering terms, as they are reported in a tensile test
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|-
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Note:  Stresses and strains are defined in engineering terms, as they are reported in a tensile test.


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'''References''':
'''References''':


Code Developed by : <span style="color:blue"> L.L. Dodd & J. Restrepo  </span>
Code Developed by : <span style="color:blue"> L.L. Dodd & J.I. Restrepo  </span>
 
[http://ascelibrary.org/sto/resource/1/jsendh/v121/i3/p433_s1?isAuthorized=no Dodd, L. L. and Restrepo-Posada, J. I. (1995). Model for Predicting Cyclic Behaviour of Reinforcing Steel. ASCE Journal of Structural Engineering, V.121, No 3, pp. 433-445.]

Latest revision as of 17:16, 7 November 2011




This command is used to construct a Dodd-Restrepo steel material

uniaxialMaterial Dodd_Restrepo $tag $Fy $Fsu $ESH $ESU $Youngs $ESHI $FSHI <$OmegaFac>

$matTag Integer tag identifying material
$Fy Yield strength
$Fsu Ultimate tensile strength (UTS)
$ESH Tensile strain at initiation of strain hardening
$ESU Tensile strain at the UTS
$Youngs Modulus of elasticity
$ESHI Tensile strain for a point on strain hardening curve, recommended range of values for ESHI: [ (ESU + 5*ESH)/6, (ESU + 3*ESH)/4]
$FSHI Tensile stress at point on strain hardening curve corresponding to ESHI
$OmegaFac Roundedness factor for Bauschinger curve in cycle reversals from the strain hardening curve. Range: [0.75, 1.15]. Largest value tends to near a bilinear Bauschinger curve. Default = 1.0.


Note: Stresses and strains are defined in engineering terms, as they are reported in a tensile test.



Examples:


References:

Code Developed by : L.L. Dodd & J.I. Restrepo

Dodd, L. L. and Restrepo-Posada, J. I. (1995). Model for Predicting Cyclic Behaviour of Reinforcing Steel. ASCE Journal of Structural Engineering, V.121, No 3, pp. 433-445.