Results 11 to 20 of about 4,853 (302)
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,
Deneme, İBRAHİM ÖZGÜR
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TMD Damping for Structures with Uncertain Modal Parameters
Applied SciencesThe optimum tuning of the natural frequency and damping ratio of TMDs for structural modal parameters and various optimization criteria are well-known from the literature.
Felix Weber
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International Journal for Simulation and Multidisciplinary Design Optimization, 2021 The current study focussed on analysing natural frequency and damping of laminated composite beams (LCBs) by varying fiber angle, aspect ratio, material property and boundary conditions.
Naidu Balireddy Somi +3 more
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The Determination of Modal Damping Ratios and Natural Frequencies from Bispectrum Modeling [PDF]
OCEANS '87, 1987 We present a new signal processing and testing technique by using a higher statistical moment, the bispectrum, to determine the damping ratio and natural frequency of offshore structures excited by both unexpected Gaussian forces and known non-Gaussian driving forces. Due to unexpected exciting forces, such as turbulence, in the ocean, environment, the
Liou, C. -Y., Chang, C. -C.
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Optimization of VEDs for Vibration Control of Transmission Line Tower
Advances in Civil Engineering, 2021 This paper investigates the optimization of viscoelastic dampers (VEDs) for vibration control of a transmission line tower. Considering the stiffness of the steel brace connected to a VED, the mechanical model of the VED-brace system was established ...
Guoping Huang +4 more
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Study of the effect of specimen size and frequency on the structural damping property of beam
Mechanical Engineering Journal, 2016 It is said that the parameters that characterize structural damping, i.e., the loss factor, are identical to the material of the specimen, but in actuality, the damping property is sometimes affected by specimen size or the frequency.
Shozo KAWAMURA +3 more
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On the robustness of the average power ratios in damping estimation: application in the structural health monitoring of composites beams [PDF]
, 2010 In composites structures, cracking, delamination will cause changes in the measured dynamic response of structure and so on experimentally modal parameters.
J. Morlier +4 more
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Significance of low energy impact damage on modal parameters of composite beams by design of experiments [PDF]
, 2009 This paper presents an experimental study on the effects of multi-site damage on the vibration response of composite beams damaged by low energy impacts around the barely visible impact damage limit (BVID).
A Shahdin +6 more
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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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Correlating low energy impact damage with changes in modal parameters: a preliminary study on composite beams [PDF]
, 2009 This paper is an experimental study of the effects of multi-site damage on the vibration response of a composite beam damaged by low energy impact. The variation of the modal parameters with different levels of impact energy and density of impact is ...
Morlier, Joseph +2 more
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