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Analytical method of the modal damping ratio of the beam with distributed dissipative oscillators and application in broadband vibration mitigation

Mechanical systems and signal processing, 2022
Distributed dissipative oscillators are considered effective measures to broaden the vibration mitigation bandwidth of structures. However, the existing calculation methods are mainly based on parameter analysis, which is not convenient for engineering ...
W. Yin, F. Sun
semanticscholar   +1 more source

Influence of Cu particulates on a356mmc using frequency response function and damping ratio

Advances in Materials and Processing Technologies, 2023
Aluminium and aluminium alloy MMCs (AAMMCs) tend to be the most explored materials in MMC development due to their broad range of properties such as wear resistance, light weight, strength with durability, and improved damping capabilities for ...
M. Naga   +6 more
semanticscholar   +1 more source

On the modal damping ratios of mixed reinforced concrete – steel buildings

Soil Dynamics and Earthquake Engineering
George A Papagiannopoulos
exaly   +2 more sources

Effects of time‐variant modal frequencies of high‐rise buildings on damping estimation

Earthquake engineering & structural dynamics (Print), 2020
This paper proposes a method to identify the time‐variant modal frequencies of high‐rise buildings and applies the method to the field measurements from a 68‐story high‐rise building during Super Typhoon Mangkhut (September 16, 2018).
K. Zhou, Q. Li
semanticscholar   +1 more source

Deformation dependent equivalent modal damping ratios for the performance-based seismic design of plane R/C structures

, 2020
A performance-based seismic design method is proposed for three types of plane R/C structures, i.e., moment resisting frames, infilled moment resisting frames and wall-frame dual systems.
E. Muho, G. Papagiannopoulos, D. Beskos
semanticscholar   +1 more source

The Determination of Modal Damping Ratios From Maximum Entropy Spectral Estimates

Journal of Dynamic Systems, Measurement, and Control, 1982
This paper focusses on the estimation of natural frequencies and modal damping ratios from measured response spectra, with particular emphasis on the dynamic response of offshore structures to wind and wave excitation. At present, estimates of natural frequencies and damping ratios are computed from the location and half-power bandwidths of resonant ...
Campbell, R. B., Vandiver, J. K.
openaire   +2 more sources

Evaluation of Absolute Damping from Modal Damping Ratios

2004
In the previous chapters, we determined the natural frequencies and modal shapes for undamped structures when modeled as shear buildings. We also determined the response of these structures using the modal superposition method. In this method, as we have seen, the differential equations of motion are uncoupled by means of a transformation of ...
Mario Paz, William Leigh
openaire   +1 more source

An Explicit Solution of Modal-Damping Ratios for Higher Modes of a Cable with an External Damper

Journal of Engineering Mechanics, 2022
AbstractDesign of external dampers for stay cables requires repetitive evaluation of damping ratios for target modes of cables under various damper parameters and installation positions, and explic...
Chao Yang   +4 more
openaire   +1 more source

A study of modal damping for offshore wind turbines considering soil properties and foundation types

Wind Energy, 2019
Wind Energy. 2019;1–19. Abstract The modal damping ratio for each mode is crucial to characterize the dynamic behavior of offshore wind turbines and widely used by simulation software in wind turbine engineering, such as Bladed and FAST.
T. Ishihara, Lilin Wang
semanticscholar   +1 more source

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