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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
$matTag |
unique material object integer tag |
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$Fy |
yield strength |
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$E |
initial elastic tangent |
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$b |
strain-hardening ratio (ratio between post-yield tangent and initial elastic tangent) |
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$R0, $cR1, $cR2 |
control the transition from elastic to plastic branches. Recommended values: $R0=between 10 and 20, $cR1=0.925, $cR2=0.15 |
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$a1, $a2, $a3, $a4 |
isotropic hardening parameters: (optional, default: no isotropic hardening) |
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$a1 |
isotropic hardening parameter, increase of compression yield envelope as proportion of yield strength after a plastic strain of $a2*($Fy/$E). |
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$a2 |
isotropic hardening parameter (see explanation under $a1) |
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$a3 |
isotropic hardening parameter, increase of tension yield envelope as proportion of yield strength after a plastic strain of $a4*($Fy/$E) |
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$a4 |
isotropic hardening parameter (see explanation under $a3) |
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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
Steel02 Material -- Hysteretic Behavior of Model with Isotropic Hardening in Tension
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