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Engineering Failure Analysis, 2020
Abstract Root causes of numerous crack failures are attributed to the torsional oscillation between the turbine generator and the grid. To prevent such kind of failures, torsional vibration monitoring system has been intensively installed in reality and the torsional vibration is more and more observed in the operation.
Chao Liu, Dongxiang Jiang
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Abstract Root causes of numerous crack failures are attributed to the torsional oscillation between the turbine generator and the grid. To prevent such kind of failures, torsional vibration monitoring system has been intensively installed in reality and the torsional vibration is more and more observed in the operation.
Chao Liu, Dongxiang Jiang
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Vibration characteristics of piezoelectric torsional transducers
Journal of Sound and Vibration, 2003Abstract The vibrational characteristics of Langevin–type torsional transducers, which consist of two piezoelectric torsional disks and two elastic blocks, are studied theoretically and experimentally in this paper. The differential equations of piezoelectric torsional motions are derived in terms of the circumferential displacement and the electric ...
Jin O. Kim, Oh Soo Kwon
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Sensitivity of rotor blade vibration characteristics to torsional oscillations
14th Structures, Structural Dynamics, and Materials Conference, 1973A theoretical investigation of dynamic response characteristics of helicopter rotor blades in forward flight was carried out with special emphasis on the torsional degrees-of-freedom. The finite element method was applied in the formulation of the coupled equations of motion for flapwise bending and torsion for blades with non-collinear elastic, mass ...
Theodore Bratanow, Akin Ecer
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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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Study on torsional vibration characteristics of conical horn
2011 International Conference on Consumer Electronics, Communications and Networks (CECNet), 2011The realization of torsional vibration by conical horn has more valuable application in project than by exponential horn and stepped horn. The wave equation of torsional wave propagating in the conical horn is analyzed based on one-dimensional wave theory, and the obtained wave equation is a standard Bessel equation.
Jianxin Zheng, Jie Han, Chuanshao Liu
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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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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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Study on Torsional Vibration Characteristics of Cross Shaft Universal Coupling
Journal of Ship Research, 2020In this work, the ship propulsion shaft system with cruciform universal coupling is studied. First, based on the analysis of the structure and characteristics of the cross-axis universal coupling, the motion relations and expressions between the components of the universal coupling are established by using the coordinate transformation method.
Nengqi Xiao +3 more
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