Results 11 to 20 of about 3,270,162 (286)
Methods for modal parameters identification applied to CNC machine tool feed drives [PDF]
The paper presents a critical appraisal of existing methods for the identification of modal parameters (natural frequencies, damping ratios and mode shapes) for CNC machine tool feed drives.
Widiyarto, Muhammad Helmi Nur +3 more
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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
doaj +1 more source
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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Subjective Validity of Figures of Merit for Room Aspect Ratio Design [PDF]
, 2009 Attempts have long been made to classify a room's low frequency audio reproduction capability with regards to its aspect ratio. Common metrics used have relied on the homogeneous distribution of modal frequencies and from these a number of 'optimal ...
Wankling, Matthew, Fazenda, Bruno
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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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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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Multi-mode interactions in vortex-induced vibrations of flexible curved/straight structures with geometric nonlinearities [PDF]
, 2010 A general low-order fluid-structure interaction model capable of evaluating the multi-mode interactions in vortex-induced vibrations of flexible curved/straight structures is presented.
Srinil, N.
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Shock and Vibration, 2020 To reduce the vibration of the plate-like structure under different boundary conditions, an all-metal damping composite structure was proposed, and its damping layer was entangled metallic wire material (EMWM).
Fuhao Peng +4 more
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