4.14.1.1. Steel01ΒΆ
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uniaxialMaterial
('Steel01', matTag, Fy, E0, b, a1, a2, a3, a4) 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).
matTag
(int)integer tag identifying material Fy
(float)yield strength E0
(float)initial elastic tangent b
(float)strain-hardening ratio (ratio between post-yield tangent and initial elastic tangent) a1
(float)isotropic hardening parameter, increase of compression yield envelope as proportion of yield strength after a plastic strain of \(a_2*(F_y/E_0)\) (optional) a2
(float)isotropic hardening parameter (see explanation under a1
). (optional).a3
(float)isotropic hardening parameter, increase of tension yield envelope as proportion of yield strength after a plastic strain of \(a_4*(F_y/E_0)\). (optional) a4
(float)isotropic hardening parameter (see explanation under a3
). (optional)
Note
If strain-hardening ratio is zero and you do not expect softening of your system use BandSPD solver.