Reliability analysis of structures controlled by external fractional viscoelastic dampers with interval parameters

被引:5
作者
Sofi, Alba [1 ,2 ]
Muscolino, Giuseppe [3 ,4 ]
Di Paola, Mario [5 ]
机构
[1] Univ Mediterranea Reggio Calabria, Dept Architecture & Terr, I-89124 Reggio Di Calabria, Italy
[2] Univ Mediterranea Reggio Calabria, Interuniv Ctr Theoret & Expt Dynam, I-89124 Reggio Di Calabria, Italy
[3] Univ Messina, Dept Engn, I-89166 Messina, Italy
[4] Univ Messina, Interuniv Ctr Theoret & Expt Dynam, I-89166 Messina, Italy
[5] Univ Palermo, Dept Engn, I-90128 Palermo, Italy
关键词
Viscoelastic dampers; Fractional differential equations; Stochastic processes; Interval analysis; Reliability; ADJACENT BUILDINGS; SEISMIC RESPONSE; VISCOUS DAMPERS; UNCERTAINTIES; PERFORMANCE; CALCULUS; TIME;
D O I
10.1007/s10409-023-22486-x
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
Seismic performance of structures controlled by external viscoelastic dampers with uncertain properties is investigated. The behaviour of the energy dissipation devices is described by a fractional constitutive law where both the fractional derivative order and the damping coefficient are modelled as interval variables with assigned lower bound and upper bound. Ground motion acceleration is modelled as a zero-mean stationary Gaussian random process. Under these assumptions, the motion of the controlled structure is governed by a set of interval fractional differential equations. All response quantities are described by interval zero-mean stationary Gaussian random processes, fully characterized in the frequency domain by their power spectral density function which depends on the interval parameters of the viscoelastic devices. Reliability analysis is carried out by extending the classical first-passage problem to the interval framework. The bounds of the interval-valued reliability function are computed by an efficient approximate procedure. A case-study, involving viscoelastic devices with interval properties defined based on experimental results available in the literature, is presented.
引用
收藏
页数:12
相关论文
共 51 条
[1]  
[Anonymous], 2004, EUR 8 DES STRUCT E 1
[2]   FRACTIONAL CALCULUS - A DIFFERENT APPROACH TO THE ANALYSIS OF VISCOELASTICALLY DAMPED STRUCTURES [J].
BAGLEY, RL ;
TORVIK, PJ .
AIAA JOURNAL, 1983, 21 (05) :741-748
[3]  
Ben-Haim Y., 1990, Convex Models of Uncertainty in Applied Mechanics
[4]  
BLAIR GWS, 1949, PHILOS MAG, V40, P80
[5]   Investigations on the Dynamic Response of Adjacent Buildings Connected by Viscous Dampers [J].
Chen, Peng ;
Wu, Xiaobin .
BUILDINGS, 2022, 12 (09)
[6]   Viscoelastic coupling dampers (VCDs) for enhanced wind and seismic performance of high-rise buildings [J].
Christopoulos, Constantin ;
Montgomery, Michael .
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS, 2013, 42 (15) :2217-2233
[7]   Fully nonstationary analytical earthquake ground-motion model [J].
Conte, JP ;
Peng, BF .
JOURNAL OF ENGINEERING MECHANICS-ASCE, 1997, 123 (01) :15-24
[8]   Design procedure for orthogonal steel exoskeleton structures for seismic strengthening [J].
Di Lorenzo, Gianmaria ;
Tartaglia, Roberto ;
Prota, Alessandro ;
Landolfo, Raffaele .
ENGINEERING STRUCTURES, 2023, 275
[9]   Optimal design of tuned liquid column damper inerter for vibration control [J].
Di Matteo, Alberto ;
Masnata, Chiara ;
Adam, Christoph ;
Pirrotta, Antonina .
MECHANICAL SYSTEMS AND SIGNAL PROCESSING, 2022, 167
[10]   Visco-elastic behavior through fractional calculus: An easier method for best fitting experimental results [J].
Di Paola, M. ;
Pirrotta, A. ;
Valenza, A. .
MECHANICS OF MATERIALS, 2011, 43 (12) :799-806