4.14.5.26. BoucWen MaterialΒΆ
- uniaxialMaterial('BoucWen', matTag, alpha, ko, n, gamma, beta, Ao, deltaA, deltaNu, deltaEta)
This command is used to construct a uniaxial Bouc-Wen smooth hysteretic material object. This material model is an extension of the original Bouc-Wen model that includes stiffness and strength degradation (Baber and Noori (1985)).
matTag
(int)integer tag identifying material
alpha
(float)ratio of post-yield stiffness to the initial elastic stiffenss (0< alpha <1)
ko
(float)initial elastic stiffness
n
(float)parameter that controls transition from linear to nonlinear range (as n increases the transition becomes sharper; n is usually grater or equal to 1)
gamma
beta
(float)parameters that control shape of hysteresis loop; depending on the values of gamma and beta softening, hardening or quasi-linearity can be simulated (look at the NOTES)
Ao
deltaA
(float)parameters that control tangent stiffness
deltaNu
deltaEta
(float)parameters that control material degradation
See also