Steel02 Material -- Giuffré-Menegotto-Pinto Model with Isotropic Strain Hardening: Difference between revisions

From OpenSeesWiki
Jump to navigation Jump to search
No edit summary
No edit summary
 
(One intermediate revision by one other user not shown)
Line 4: Line 4:


{|  
{|  
| style="background:yellow; color:black; width:800px" | '''uniaxialMaterial Steel02 $matTag $Fy $E $b $R0 $cR1 $cR2 <$a1 $a2 $a3 $a4 $sigInit>'''
| style="background:limegreen; color:black; width:800px" | '''uniaxialMaterial Steel02 $matTag $Fy $E $b $R0 $cR1 $cR2 <$a1 $a2 $a3 $a4 $sigInit>'''
|}
|}


Line 35: Line 35:


more on [[OpenSees uniaxialMaterial Arguments -- Steel02 ]]
more on [[OpenSees uniaxialMaterial Arguments -- Steel02 ]]


REFERENCE:
REFERENCE:


Filippou, F. C., Popov, E. P., Bertero, V. V. (1983). "Effects of Bond Deterioration on Hysteretic Behavior of Reinforced Concrete Joints". Report EERC 83-19, Earthquake Engineering Research Center, University of California, Berkeley.
Filippou, F. C., Popov, E. P., Bertero, V. V. (1983). "Effects of Bond Deterioration on Hysteretic Behavior of Reinforced Concrete Joints". Report EERC 83-19, Earthquake Engineering Research Center, University of California, Berkeley.


Steel02 Material -- Material Parameters of Monotonic Envelope
Steel02 Material -- Material Parameters of Monotonic Envelope

Latest revision as of 17:35, 20 September 2012



This command is used to construct a uniaxial Giuffre-Menegotto-Pinto steel material object with isotropic strain hardening.

uniaxialMaterial Steel02 $matTag $Fy $E $b $R0 $cR1 $cR2 <$a1 $a2 $a3 $a4 $sigInit>
$matTag integer tag identifying material
$Fy yield strength
$E0 initial elastic tangent
$b strain-hardening ratio (ratio between post-yield tangent and initial elastic tangent)
$R0 $CR1 $CR2 parameters to control the transition from elastic to plastic branches.

Recommended values: $R0=between 10 and 20, $cR1=0.925, $cR2=0.15

$a1 isotropic hardening parameter, increase of compression yield envelope as proportion of yield strength after a plastic strain of $a2*($Fy/E0). (optional)
$a2 isotropic hardening parameter (see explanation under $a1). (optional default = 1.0).
$a3 isotropic hardening parameter, increase of tension yield envelope as proportion of yield strength after a plastic strain of $a4*($Fy/E0). (optional default = 0.0)
$a4 isotropic hardening parameter (see explanation under $a3). (optional default = 1.0)
$sigInit Initial Stress Value (optional, default: 0.0) the strain is calculated from epsP=$sigInit/$E

if (sigInit!= 0.0) { double epsInit = sigInit/E; eps = trialStrain+epsInit; } else eps = trialStrain;

more on OpenSees uniaxialMaterial Arguments -- Steel02


REFERENCE:

Filippou, F. C., Popov, E. P., Bertero, V. V. (1983). "Effects of Bond Deterioration on Hysteretic Behavior of Reinforced Concrete Joints". Report EERC 83-19, Earthquake Engineering Research Center, University of California, Berkeley.


Steel02 Material -- Material Parameters of Monotonic Envelope

Steel02 Material -- Hysteretic Behavior of Model w/o Isotropic Hardening

Steel02 Material -- Hysteretic Behavior of Model with Isotropic Hardening in Compression

Steel01 Material -- Hysteretic Behavior of Model with Isotropic Hardening in Tension

Code Developed by: Filip Filippou, UC Berkeley

Images Developed by: Silvia Mazzoni

Retrieved from "https://opensees.ist.berkeley.edu/wiki/index.php?title=Steel02_Material_--_Giuffré-Menegotto-Pinto_Model_with_Isotropic_Strain_Hardening&oldid=10073"