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On some characteristics of the frequency equation of torsional vibrations of light shafts with several disks

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Torsional vibration characteristics and experimental study of cracked rotor system with torsional oscillation

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
exaly   +2 more sources

Analysis on Torsional Vibration Characteristics of Steam Turbine Generator Shafts

Advanced Materials Research, 2011
This 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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Torsional vibration characteristics of a power-split hybrid system

International Journal of Electric and Hybrid Vehicles, 2013
A torsional vibration dynamic model is built to predict the torsional vibration characteristics of a power–split hybrid system. On the basis of this dynamic model, the system dynamic equations of hybrid driveline are set, from which the natural frequencies and relevant mode shapes under different driving modes are solved using the corresponding ...
Xiaolin Tang, Jianwu Zhang
exaly   +2 more sources

Experiment on the characteristics of torsional vibration of rotor-to-stator rub in turbomachinery

Tribology International, 2000
Abstract By use of the DK-II torsional vibration measuring system, the characteristics of torsional vibration of a rotor with rotor-to-stator rub are studied. It can be concluded that the measured natural torsional frequency (frub) with rub is higher than the one (fori) without rub.
Huang Diangui
exaly   +2 more sources

Torsional vibration transmissibility characteristics of reinforced viscoelastic flexible pipes

Journal of Sound and Vibration, 1988
The dynamic complex shear moduli of fibre and steel reinforced viscoelastic flexible pipes are determined by using a torsional non-resonance method. Material property master curves as a function of frequency and temperature are obtained by using reduced modulus methods.
I. Kennedy, G.R. Tomlinson
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Research on the Modeling of Bending-Torsional Coupling and Vibration Characteristics of Planetary Roller Screw Mechanism

Electronics (Switzerland), 2022
A general bending-torsional coupling dynamic model of the planetary roller screw mechanism is developed by the lumped mass method in this paper to analyze the vibration characteristics.
Linping Wu, Shangjun Ma, Ma Shangjun
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Analysis of vibration characteristics and adaptive continuous perturbation control of some torsional vibration system with backlash

Chaos, Solitons and Fractals, 2017
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Liu, Shuang, Ai, Hongling, Lin, Zhenjun, Meng, Zong   +3 more
exaly   +2 more sources

Vibration characteristics of piezoelectric torsional transducers

Journal of Sound and Vibration, 2003
Abstract 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, 1973
A 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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