Implementation in OpenSEES of the Bouc-Wen model modified by Gerolymos and Gazetas (2005).
Author: Andrea Marchi ([email protected])
References:
- Gerolymos N. and Gazetas G. Constitutive model for 1-D cyclic soil behaviour applied to seismic analysis of layered deposits. Soils and Foudations, 45-147 (2005).
- Marchi A. Improved Bouc-Wen model implementation in OpenSees. Proceedings of the 2022 Eurasian OpenSees Days. EOS 2022. Lecture Notes in Civil Engineering, vol 326, 31-38. Springer, Cham. https://doi.org/10.1007/978-3-031-30125-4_3
Include BoucWenGG.dll
file inside the same folder of the TCL model file to use the material. The material can be defined by the TCL command:
uniaxialMaterial BoucWenGG $matTag $alpha $k0 $strainY $n $gamma $beta $s1 $s2 $mkur
parameter | description |
---|---|
matTag |
integer tag identifying the material |
alpha |
ratio of the post-yielding stiffness to the initial elastic stiffness |
k0 |
initial elastic stiffness |
strainY |
yielding strain |
n |
parameter that controls the transition between the initial and post-yielding branch. As |
gamma , beta
|
parameters that control the shape of the hysteresis loop |
s1 , s2
|
control the stiffness degradation upon reversal |
mkur |
account for stress and tangent stiffness modification proposed by Drosos et al. (2012). mkur =1 modification is aplied, mkur =0 modification is not applied |