Steel01
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
|
integer tag identifying material |
Fy
|
yield strength |
E0
|
initial elastic tangent |
b
|
strain-hardening ratio (ratio between post-yield tangent and initial elastic tangent) |
|
isotropic hardening parameter, increase of compression yield envelope as proportion of yield strength after a plastic strain of \(a2*(\)Fy/E0). (optional) |
|
isotropic hardening parameter (see explanation under $a1). (optional). |
|
isotropic hardening parameter, increase of tension yield envelope as proportion of yield strength after a plastic strain of \(a4*(\)Fy/E0). (optional) |
|
isotropic hardening parameter (see explanation under $a3). (optional) |

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 Model with Isotropic Hardening in Tension

NOTES:
- If strain-hardening ratio is zero and you do not expect softening of your system use BandSPD solver.
Code Developed by: Filip Filippou, UC Berkeley
Images Developed by: Silvia Mazzoni