Results 251 to 260 of about 3,669 (299)

A chimney’s seismic assessment by a tuned mass damper

Engineering Structures, 2014
Abstract The paper concerns a tuned mass dumper (TMD) design to improve the seismic response of an historical chimney located in an important Italian hydraulic plant. The chimney, built at the beginning of XX century, has about 50 m total height and its structure is completely in masonry. To understand the chimney’s dynamic response and evaluate the
ZUCCA, MARCO, LONGARINI, NICOLA
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A stay cable with viscous damper and tuned mass damper

Australian Journal of Structural Engineering, 2015
AbstractStay cables in cable-stayed bridges are vulnerable to dynamic excitation because their intrinsic damping is very low. The cables have often been exhibiting undesirable and excessive vibrations which result in increasing maintenance frequency and disruption to normal operations of the entire bridges.
Viet Hung Cu, Bing Han
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Tuned Mass Dampers for Buildings

Journal of the Structural Division, 1977
Tuned mass dampers attached to single degree-of-freedom systems representing tall buildings are studied. System equations are formulated and solved for various input forcing functions. Design parameters of the damper are varied to study the response reduction.
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A rooftop tuned mass damper frame

Earthquake Engineering & Structural Dynamics, 2003
AbstractThis article documents the analytical study and feasibility of placing a tuned mass damper in the form of a limber rooftop moment frame atop relatively stiff structures to reduce seismic acceleration response. Six existing structures were analytically studied using a suite of time history and response spectra records. The analyses indicate that
Jerod G. Johnson, Lawrence D. Reaveley, Chris Pantelides   +2 more
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Tuned Mass Damper Systems

2014
This chapter is concerned by tuned-mass damping systems. We start with an introductory example of a tuned-mass damper (TMD) design and a brief description of some of the implementations of TMDs in building structures. A rigorous theory of TMDs for single-degree-of-freedom (SDOF) systems subjected to harmonic force excitation and harmonic ground motion ...
Jerome Connor, Simon Laflamme
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Comparative Studies on Nonlinear Structures with Multiple Tuned Mass Damper and Multiple Tuned Impact Damper

International Journal of Structural Stability and Dynamics, 2023
This study proposes integrating the particle damping technology into multiple tuned mass damper (MTMD) to form a multiple tuned impact damper (MTID) system for suppressing the vibrations of nonlinear high-rise buildings under earthquakes. A systematic performance comparison comprising vibration damping effects and working strokes between the optimal ...
Lu, Zheng, Zhou, Mengyao, Ma, Naiyin, Du, Jiang   +3 more
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Nonlinear Rooftop Tuned Mass Damper Frame

2012
Innovative strategies driven toward improving the structural and nonstructural performance of existing buildings during large earthquakes are of paramount interest for researchers and practitioners of earthquake engineering. Likewise, strategies for enhancing performance of new structures in cost effective ways is a key issue for designers and owners ...
J G Johnson, C P Pantelides, L D Reaveley   +2 more
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Seismic Effectiveness of Tuned Mass Dampers

Journal of the Structural Division, 1981
Time history analysis of 1DOF systems with and without a tuned mass damper, subjected to a set of historical earthquakes, shows that the peak response ratio (ratio between the peak responses with and without damper) depends primarily on damping constants and on earthquake duration.
Amir M. Kaynia, Daniele Veneziano, John M. Biggs   +2 more
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Tuning and Position Optimization of Mass Dampers for Seismic Structures

2017
Tuned mass dampers (TMDs) used in seismic vibration control are positioned on the top of the structures and it is the optimum position for regular structures. For structure with different stiffness values for each story, the optimum place of a TMD may be different. In this study, the story position of TMD is also included as a design variable.
Nigdeli, Sinan Melih, Bekdaş, Gebrail
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Self-tuning tuned mass damper (TMD)

SPIE Proceedings, 2017
Tuned mass dampers (TMD) are heavily damped resonant devices which add damping to lightly damped, vibrational modes of a structure by dynamically coupling into the lightly damped modes. In practice, a TMD is a damped spring/mass resonator that is tuned so that its frequency is close to a lightly damped mode on the host structure. The TMD is attached to
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