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This command is used to construct a uniaxial bilinear steel material object with kinematic hardening and optional isotropic hardening described by a non-linear evolution equation (REF: Fedeas).
uniaxialMaterial Steel01 $matTag $Fy $E0 $b <$a1 $a2 $a3 $a4>
$matTag |
unique material object integer tag |
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$Fy |
yield strength |
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$E0 |
initial elastic tangent |
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$b |
strain-hardening ratio (ratio between post-yield tangent and initial elastic tangent) |
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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/E0). |
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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/E0) |
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$a4 |
isotropic hardening parameter (see explanation under $a3) |
Steel01 Material -- Material Parameters of Monotonic Envelope
Steel01 Material -- Hysteretic Behavior of Model w/o Isotropic Hardening
Steel01 Material -- Hysteretic Behavior of Model with Isotropic Hardening in Compression
Steel01 Material -- Hysteretic Behavior of Steel_1 Model with Isotropic Hardening in Tension
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