BWBN Material

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亚洲城手机版网页登录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)).

uniaxialMaterial BWBN $matTag $alpha $ko $n $gamma $beta $Ao $q $zetas $p $Shi $deltaShi $lambda $tol $maxIter

$matTag integer tag identifying material
$alpha ratio of post-yield stiffness to the initial elastic stiffenss (0< <math>\alpha</math> <1)
$ko initial elastic stiffness
$n 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 parameters that control shape of hysteresis loop; depending on the values of <math>\gamma</math> and <math>\beta</math> softening, hardening or quasi-linearity can be simulated (look at the BoucWen Material)
$Ao parameter that controls tangent stiffness
$q $zetas $p $Shi $deltaShi $lambda parameters that control pinching
$tol tolerance
$maxIter maximum iterations


BWBN YSPD.jpg

亚洲城手机版网页登录Fig. Cyclic force displacement relationship of the YSPDs generated using the BWBN material model




PARAMETER ESTIMATION:

BWBNParameterEstimation




EXAMPLE:

BWBNExample




亚洲城手机版网页登录REFERENCES:

亚洲城手机版网页登录Baber, T. T., & Noori, M. N. (1986). "Modeling general hysteresis behavior and random vibration application." Journal of Vibration Acoustics Stress and Reliability in Design, 108, 411.

亚洲城手机版网页登录Foliente, G. C. (1995). Hysteresis modeling of wood joints and structural systems. Journal of Structural Engineering, 121(6), 1013-1022.




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