Results 181 to 190 of about 1,073 (213)

Hysteretic dampers for earthquake‐resistant structures

Earthquake Engineering & Structural Dynamics, 1974
AbstractThe earthquake resistance of many structures can be increased by the inclusion of special components which act as hysteretic dampers. During moderately severe earthquakes these dampers act as stiff members which reduce structural deformations, while during very severe earthquakes the dampers act as energy absorbers which limit the quasi ...
R. I. Skinner, J. M. Kelly, A. J. Heine
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Modeling asymmetric hysteretic properties of an MR fluids damper

2004 43rd IEEE Conference on Decision and Control (CDC) (IEEE Cat. No.04CH37601), 2004
A generalized model is synthesized to characterize the asymmetric hysteretic force-velocity properties of a magneto-rheological (MR) fluid damper as a function of the command current, excitation frequency and displacement amplitude, on the basis of symmetric and asymmetric sigmoid functions.
Enrong Wang, Xiao Qing Ma, Subhash Rakheja, Chun-Yi Su   +3 more
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Hysteretic Model of Stiffened Shear Panel Dampers

Journal of Structural Engineering, 2006
A properly designed two-way stiffened (stiffened both in longitudinal and transverse directions) shear panel can sustain large deformation without pinching and consequent strength degradation. Hence it can be used as an effective passive energy dissipating damper (PEDD) in building and bridge structures to absorb seismic energy. In this Technical Note,
Zhiyi Chen, Hanbin Ge, Tsutomu Usami
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Steel Frames with Bracing Mechanism and Hysteretic Dampers.

Earthquake Engineering & Structural Dynamics, 2003
5
Phocas, Marios C., Pocanschi, A., Phocas, Marios C., Pocanschi, A.   +3 more
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Rehabilitation of existing masonry structures with hysteretic dampers

2014
A displacement-based method for the design of an energy dissipating system is herein proposed. The device, which is composed of added concrete walls equipped with hysteretic Added Damping and Stiffness dampers, is aimed at upgrading the seismic behaviour of existing masonry structures.
BENEDETTI, ANDREA, LANDI, LUCA, MERENDA, DARIO GIUSEPPE   +2 more
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Hysteretic Dampers in Base Isolation: Random Approach

Journal of Structural Engineering, 1985
A method of random vibration analysis of base isolated structures with hysteretic dampers is employed. The hysteretic restoring force is modelled by a nonlinear differential equation. The equations of motion for shear type structures are linearized in closed form.
Michalakis C. Constantinou, Iradj G. Tadjbakhsh   +1 more
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Modelling the hysteretic characteristics of a magnetorheological fluid damper

Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 2003
A generalized model is proposed to characterize the biviscous hysteretic force characteristics of a magnetorheological (MR) fluid damper using symmetric and asymmetric sigmoid functions on the basis of a fundamental force generation mechanism, observed qualitative trends and measured data under a wide range of control and excitation conditions ...
En Rong Wang, Xiao Qing Ma, S Rakhela, C Y Su   +3 more
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Simultaneous optimal damper placement using oil, hysteretic and inertial mass dampers

Earthquakes and Structures, 2013
Oil, hysteretic and inertial mass dampers are representatives of passive dampers used for smart enhancement of seismic performance of building structures. Since oil dampers have a nonlinear relief mechanism and hysteretic dampers possess nonlinear restoring-force characteristics, several difficulties arise in the evaluation of buildings including such ...
Yu Murakami, Katsuya Noshi, Kohei Fujita, Masaaki Tsuji, Izuru Takewaki   +4 more
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Analysis of a semi-active MR-damper with hysteretic and asymmetric properties

Proceedings of the 2003 American Control Conference, 2003., 2004
A generalized model is proposed to characterize the hysteretic damping properties of a magneto-rheological (MR) fluid damper, which yield asymmetric force in compression and rebound. The proposed nonlinear damper model incorporating applied current, and magnitude and frequency of the response, is employed within a two-DOF "quarter-car" model to ...
Enrong Wang, Xiao Qing Ma, Subhash Rakheja, Chun-Yi Su   +3 more
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A design methodology for hysteretic dampers

2002
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2002. ; Includes bibliographical references (p. 71-72). ; by Bora M. Tokyay. ; M.Eng.
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