Results 111 to 120 of about 1,174 (165)

Tuned-Mass Dampers

2018
In this chapter Tuned-Mass-Dampers (TMDs) are explained. At the beginning the mechanical characteristics and their operation are discussed, and then the design criteria for these seismic isolation systems are defined. At the end of the chapter two practical examples of TMD and Active-Tuned-Mass-Dampers (ATMDs) are inserted.
Gian Paolo Cimellaro, Sebastiano Marasco
openaire   +1 more source

Tuned mass damper

The Journal of the Acoustical Society of America, 1997
An apparatus (80) for damping dynamic response in a primary structure (82) includes a secondary mass (90), and a spring (92) and a viscoelastic element (96, 98), the spring (92) and viscoelastic element (96, 98) interposed between the primary (82) structure and the secondary mass (90).
openaire   +1 more source

Series-Type Pendulum Tuned Mass Damper-Tuned Sloshing Damper

Journal of Vibration and Acoustics, 2019
Abstract A pendulum-type tuned mass damper (TMD)-tuned sloshing damper (TSD) system is proposed as a cost-effective device to reduce wind-induced structural motion. Lagrange's principle is employed to develop an equivalent mechanical model for the system.
J. S. Love, K. P. McNamara, M. J. Tait, T. C. Haskett   +3 more
openaire   +1 more source

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
openaire   +3 more sources

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
openaire   +1 more source

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
openaire   +1 more source

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.
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source