4.14.5.26. BoucWen MaterialΒΆ
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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