4.14.5.27. BWBN MaterialΒΆ
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uniaxialMaterial
('BWBN', matTag, alpha, ko, n, gamma, beta, Ao, q, zetas, p, Shi, deltaShi, lambda, tol, maxIter) This command is used to construct a uniaxial Bouc-Wen pinching hysteretic material object. This material model is an extension of the original Bouc-Wen model that includes pinching (Baber and Noori (1986) and Foliente (1995)).
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 BoucWen Material) Ao
(float)parameter that controls tangent stiffness q
zetas
p
Shi
deltaShi
lambda
(float)parameters that control pinching tol
(float)tolerance maxIter
(float)maximum iterations
See also