TY - JOUR
T1 - A fractional derivative Zener model for the numerical simulation of base isolated structures
AU - Markou, Athanasios
AU - Manolis, George D.
PY - 2016
Y1 - 2016
N2 - A fractional derivative Zener (FDZ) model connected in parallel with a linear viscous damper and a Coulomb friction slider is used to numerically simulate the mechanical behavior of a base isolated (BI) building tested under free vibration conditions in Solarino, Sicily. This hybrid BI system comprises high damping rubber bearings in combination with low friction sliding bearings. A comparison study of the present model with previous ones appearing in the literature, namely the bi-linear and the tri-linear models defined in the time domain, is carried out here. Furthermore, the linear viscoelastic solid, namely the classical Zener model, is also implemented and evaluated. The rheological models representing all the above BI systems are analyzed and, for the first time, the rheological formulation for the tri-linear model is presented. The present comparison study shows that the FDZ model is capable of describing the complex nonlinear response of BI systems.
AB - A fractional derivative Zener (FDZ) model connected in parallel with a linear viscous damper and a Coulomb friction slider is used to numerically simulate the mechanical behavior of a base isolated (BI) building tested under free vibration conditions in Solarino, Sicily. This hybrid BI system comprises high damping rubber bearings in combination with low friction sliding bearings. A comparison study of the present model with previous ones appearing in the literature, namely the bi-linear and the tri-linear models defined in the time domain, is carried out here. Furthermore, the linear viscoelastic solid, namely the classical Zener model, is also implemented and evaluated. The rheological models representing all the above BI systems are analyzed and, for the first time, the rheological formulation for the tri-linear model is presented. The present comparison study shows that the FDZ model is capable of describing the complex nonlinear response of BI systems.
KW - Base isolation
KW - High damping rubber bearings
KW - Friction sliding bearings
KW - Dynamic response
KW - Fractional derivatives
KW - Zener model
U2 - 10.1007/s10518-015-9801-7
DO - 10.1007/s10518-015-9801-7
M3 - Article
SN - 1570-761X
VL - 14
SP - 283
EP - 295
JO - Bulletin of Earthquake Engineering
JF - Bulletin of Earthquake Engineering
IS - 1
ER -