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Damping Ratio Estimation of Heavily Damped Structures Using State-Space Modal Responses [PDF]
SensorsVibration control systems are extensively utilized in structures to enhance their resilience against earthquakes and wind forces. However, structures with significant damping exhibit atypical damping behaviors, which impose constraints on the ...
Jungtae Noh +2 more
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Identification of modal damping ratios of structures with closely spaced modal frequencies
Structural Engineering and Mechanics, 2002 This paper explores the possibility of using a combination of the empirical mode decomposition (EMD) and the Hilbert transform (HT), termed the Hilbert-Huang transform (HHT) method, to identify the modal damping ratios of the structure with closely spaced modal frequencies.
Y L Xu
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Estimation of modal damping ratio of impact-damped flexible beams using ANFIS
Neural Computing and Applications, 2012 This paper presents the development of adaptive neuro-fuzzy inference systems (ANFIS) model for estimating the modal damping ratio of impact-damped flexible beams. The experimental results obtained from the literature are used as training and testing data for developing the model. Five of six parameters namely the gap, mass, modal amplitude, frequency,
I. Deneme
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Errors in Estimating Modal Damping Ratio.
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 1995 The purpose of this paper is to investigate the effect of measurement errors on the modal damping ratio. Errors in estimating modal damping ratio are derived for various curve-fitting methods. For the iterative method, errors in estimating modal damping ratio are induced by bias errors in the frequency response function.
Watanabe, Makoto, Okano, Michiharu
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Equivalent Modal Damping Ratios of a Composite Tube-Type Tall Building to Dynamic Wind Loading [PDF]
Shock and Vibration, 1996 This article discusses computing methods of the equivalent modal damping ratio for a composite tube-type tall building. The equivalent damping ratio of a composite structure under wind-induced vibrations encompasses the combined effects from the ...
B.C. Huang +3 more
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LSTM‐Based Approach for Stable Identification of Modal Damping Ratio in Building Structures
Structural Control and Health MonitoringModal parameters are used as safety assessment indicators for evaluating the structural integrity of buildings in various ways. In particular, the modal damping ratio plays a crucial role in accurately predicting the serviceability and safety of buildings, starting from the initial design stage.
Da Yo Yun +3 more
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Estimation of damping ratios of steel structures by Operational Modal Analysis method
Journal of Constructional Steel Research, 2015 Abstract In this study, it is aimed to compare the modal damping ratios attained by considering the measurement duration, frequency range, sampling rate, and the method used in modal parameter identification as variable parameters. The investigations were performed on a 3 storey steel building model.
Alemdar Bayraktar
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Modal damping ratios of the two-degree-of-freedom acoustic model having a Helmholtz resonator
Nihon Kikai Gakkai ronbunshu, 2016 Helmholtz resonators are used in many industrial products as devices for reducing low-frequency noise. An advantage of the Helmholtz resonator is that the structure is simple and applicable to low-frequency noise for its size.
Shinichi MARUYAMA +2 more
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Effect of the frequency spacing on modal damping estimation of a double-layer grid [PDF]
مهندسی عمران شریف, 2021 Although natural frequencies and mode shapes can be accurately measured by dynamic tests, error bounds in values of damping estimation can be large. Since damping strongly influences the design and control of structures, efforts are made to find the ...
S. Salehi +2 more
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Energies, 2023 The high-frequency vibration and resonance of armature assembly in the hydraulic servo valve are the main reasons for instability and failure. Magnetic fluid (MF) operating in the squeeze mode can be taken as an effective damper for resonance suppression
Jinghui Peng +4 more
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