Steel02
This command is used to construct a uniaxial Giuffre-Menegotto-Pinto steel material object with isotropic strain hardening.Model.uniaxial(“Steel02”, name, fy, E, b)
| fy |
float
|
yield strength |
| E |
float
|
Young’s modulus of elasticity |
| b = 0.0 |
float
|
strain-hardening ratio (ratio between post-yield tangent and initial elastic tangent |
| R0 = 18 |
float
|
|
| cR1 = 0.925 |
float
|
Bauschinger evolution parameter |
| cR2 = 0.15 |
float
|
Bauschinger evolution parameter |
| a1 = 0.0 |
float
|
increase of compression yield envelope as proportion of yield strength
after a plastic strain of a2∗(Fy/E0)
|
| a2 = 1.0 |
float
|
see explanation under a1.
|
| a3 = 0.0 |
float
|
increase of tension yield envelope as proportion of yield strength after
a plastic strain of a4∗(Fy/E0)
|
| a4 = 1.0 |
float
|
see explanation under a3.
|
| sigInit = 0.0 |
float
|
initial stress |
more on OpenSees uniaxialMaterial Arguments – Steel02
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
References
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.
Code Developed by: Filip Filippou, UC Berkeley
Images Developed by: Silvia Mazzoni