Results 231 to 240 of about 208,746 (285)
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Proceedings of the Institution of Mechanical Engineers: Automobile Division, 1958
The construction of an internal-combustion engine is such as to make it susceptible to resonant torsional oscillation of the crankshaft. When an engine is operated near a critical speed, that is, a speed at which the pulsations produced by each cylinder excite the natural frequency of the crankshaft, excessive torsional amplitudes are developed which
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The construction of an internal-combustion engine is such as to make it susceptible to resonant torsional oscillation of the crankshaft. When an engine is operated near a critical speed, that is, a speed at which the pulsations produced by each cylinder excite the natural frequency of the crankshaft, excessive torsional amplitudes are developed which
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Torsional Vibration and Related Coupled Vibration
2019Torsional vibrations are often problematic in transient responses when a rotor-bearing system starts up. The vibration is more predominant and unavoidable in geared rotor systems. Though torsional vibration poses long-term problems, new methods of rotor design have been established by employing the transfer matrix method, which are capable of ...
Osami Matsushita +4 more
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Torsional vibration of acrolein
Transactions of the Faraday Society, 1966The sub-bands of the torsional vibration of acrolein have been resolved. The marked degradation indicates a change of about 2.7% in the rotational constant A in the first torsionally excited state. This results in the R branch being much more intense than the P branch.
G. E. Campagnaro, J. L. Wood
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Journal of Sound and Vibration, 1975
The results of a successful experimental search for Φ − bell modes are reported. Some apparently extraordinary inconsistencies observed between the different components of such modes are explained in terms of small asymmetries of the bell. It is shown that Φ − modes could easily be mistaken for π modes.
T. Charnley, R. Perrin
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The results of a successful experimental search for Φ − bell modes are reported. Some apparently extraordinary inconsistencies observed between the different components of such modes are explained in terms of small asymmetries of the bell. It is shown that Φ − modes could easily be mistaken for π modes.
T. Charnley, R. Perrin
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The Journal of the Acoustical Society of America, 1983
A torsional vibration damper having limit stops to limit the compression of the springs and to avoid overstraining of the springs. Spring retainers which seat on the driving and driven members have protrusions and recesses to minimize relative rubbing motion and wear and provide improved alignment of the spring seats in the assembly with the springs ...
George T. Prince, Geradus M. Ballendux
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A torsional vibration damper having limit stops to limit the compression of the springs and to avoid overstraining of the springs. Spring retainers which seat on the driving and driven members have protrusions and recesses to minimize relative rubbing motion and wear and provide improved alignment of the spring seats in the assembly with the springs ...
George T. Prince, Geradus M. Ballendux
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The Journal of the Acoustical Society of America, 1980
ABSTRACT A vibration damper assembly for use in a torsional coupling between a driving member and a driven member wherein the damper assembly provides for a very low rate, high amplitude deflection. The vibration damper includes a hub to be received on a driven shaft, two or more groups of springs having multiple springs of the came or various ...
Don R. Fall, Paul E. Lamarche
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ABSTRACT A vibration damper assembly for use in a torsional coupling between a driving member and a driven member wherein the damper assembly provides for a very low rate, high amplitude deflection. The vibration damper includes a hub to be received on a driven shaft, two or more groups of springs having multiple springs of the came or various ...
Don R. Fall, Paul E. Lamarche
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The Journal of the Acoustical Society of America, 1982
An improvement in torsional vibration monitors wherein a frequency shift is applied to the torsional vibration signal to achieve improved stability and increased confidence in the measurement. The torsional vibration signal is applied to parallel frequency shifters to produce a lower frequency measuring signal and a lower frequency reference signal ...
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An improvement in torsional vibration monitors wherein a frequency shift is applied to the torsional vibration signal to achieve improved stability and increased confidence in the measurement. The torsional vibration signal is applied to parallel frequency shifters to produce a lower frequency measuring signal and a lower frequency reference signal ...
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The Journal of the Acoustical Society of America, 1980
A machine spindle with a chuck at one end and a belt sheave at the other has torsional vibrations damped by an inertial wheel loosely received over the chuck.
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A machine spindle with a chuck at one end and a belt sheave at the other has torsional vibrations damped by an inertial wheel loosely received over the chuck.
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Journal of Fluids Engineering, 1930
Abstract In this paper the authors present a theory of the action of friction dampers on systems in torsional resonance, with special application to gas- and Diesel-engine installations. Model tests carried out to check this theory are described. The effect of introducing springs in the Lanchester damper is also discussed.
J. P. Den Hartog, J. Ormondroyd
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Abstract In this paper the authors present a theory of the action of friction dampers on systems in torsional resonance, with special application to gas- and Diesel-engine installations. Model tests carried out to check this theory are described. The effect of introducing springs in the Lanchester damper is also discussed.
J. P. Den Hartog, J. Ormondroyd
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The Journal of the Acoustical Society of America, 1981
A torsional-vibration damper comprises three concentric ring elements being a hub ring, a flywheel ring and an elastic ring. The flywheel ring is mounted radially inside the hub ring and inside the elastic ring mounted between the hub ring and the flywheel ring.
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A torsional-vibration damper comprises three concentric ring elements being a hub ring, a flywheel ring and an elastic ring. The flywheel ring is mounted radially inside the hub ring and inside the elastic ring mounted between the hub ring and the flywheel ring.
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