Results 271 to 280 of about 32,294 (305)
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Characteristics of torsional vibrations of a shaft with unbalance
Journal of Sound and Vibration, 2007The aim of this paper is to study the characteristics of torsional vibration of a rotor with unbalance by numerical simulation. It can be concluded that synchronous torsional vibration accompanying with small higher harmonic components are excited, except when the speed of rotation is near, or equal to, half the natural frequency of torsional vibration,
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Torsional Free Vibration Characteristics of Hybrid Clinched Joints
2010 International Conference on Measuring Technology and Mechatronics Automation, 2010The aim of this study is to predict the torsional free vibration characteristics of single lap-jointed cantilevered hybrid clinched joints. The focus of the analysis is to reveal the influence on the natural frequencies, natural frequency ratios and mode shapes of single lap-jointed cantilevered hybrid clinched joints caused by variations in the ...
Xiaocong He, Shanfeng Gao, Wenbin Zhang
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Analysis on Torsional Vibration Characteristics of Tracked Vehicle Gearbox
Applied Mechanics and Materials, 2013According to the dynamic characteristics of tracked vehicle gearbox system, the integrated influence of elasticity of shaft, gear meshing stiffness and transmission error in the system is considered, and mathematics models of two type configurations are created, Matlab/Simulink model of which are provided.
Yi Cheng Xu +3 more
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Torsion and free vibration characteristics of turbogenerator end windings
Journal of Sound and Vibration, 1992Summary: Stator end windings of large turbogenerators are subjected to static and harmonic forces due to electromagnetic interaction of the electric currents in them. In this paper the free vibration characteristics of these end winding coils are analyzed by using a transfer matrix approach, with account taken of the flexural and torsional rigidities ...
Narayanan, S. +3 more
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SAE Technical Paper Series, 2009
<div class="htmlview paragraph">The working principle of dual mass flywheel - radial spring (DMF-RS) type torsional vibration damper was analyzed, and the design method of natural torsional vibration characteristics control of DMF-RS type torsional damper for automotive powertrains was studied herein.
Hu Jianjun +3 more
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<div class="htmlview paragraph">The working principle of dual mass flywheel - radial spring (DMF-RS) type torsional vibration damper was analyzed, and the design method of natural torsional vibration characteristics control of DMF-RS type torsional damper for automotive powertrains was studied herein.
Hu Jianjun +3 more
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Applied Mechanics and Materials, 2014
The tool’s unique movement trajectory in longitudinal and torsional ultrasonic machining technology can help chip extraction. Cutting liquid can offer good lubrication, cleaning and cooling. It also can prolong tool’s life, improve the processing quality and processing efficiency, so it is widely used in precision and ultra-precision machining.
Hong Bing Zhao, Xue Hong Shen
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The tool’s unique movement trajectory in longitudinal and torsional ultrasonic machining technology can help chip extraction. Cutting liquid can offer good lubrication, cleaning and cooling. It also can prolong tool’s life, improve the processing quality and processing efficiency, so it is widely used in precision and ultra-precision machining.
Hong Bing Zhao, Xue Hong Shen
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Analysis on Torsional Vibration Characteristics of Steam Turbine Generator Shafts
Advanced Materials Research, 2011This article introduced the four-terminal network method, Riccati transfer matrix method and finite element method respectively, and the applications of three methods in inherent characteristics analysis of turbine generator units’ torsional vibration. Considering an actual case of 600 MW units in one power, the natural frequencies and normal vibration
Tian Xiao Wang, Cheng Bing He, Di Jiang
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Influence of Torsional Vibrations on the Photoluminescence Characteristics of Dye Solutions
Journal of Fluorescence, 1998The influence of torsional vibrations of fluorophore molecule on polarization spectra and absorption/emission vibronic band profiles of isotropic dye solutions has been considered. Basing on the concept of luminescence center (LC) and assuming that (1) electronic transitions in the LC may be assisted by torsion-vibrational excitations, and (2 ...
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Effect of Torsion on Stability, Dynamic Forces, and Vibration Characteristics in Drillstrings
Journal of Energy Resources Technology, 1997Traditionally, the analysis of stability in drillstrings is based on longitudinal vibrations only. However, field experience indicates the presence of torsional effects in the form of modulations in longitudinal vibrations. Moreover, torsional dynamic forces are significant and lead to joint problems during drilling.
M. A. Elsayed +2 more
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Rotational speed oscillation characteristic and decomposition algorithm of torsional vibration
2008 7th World Congress on Intelligent Control and Automation, 2008For analysing the torsional vibration characteristic of rotary mechanical drive system, a new highly active calculation decomposition algorithm was proposed by using series decoupled method. When the elastic driving shaft and motor shaft had speed oscillation, the decomposition algorithm could develop nonlinear differential equation into a series of ...
null Bin Liu +2 more
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