Results 271 to 280 of about 1,083,308 (333)
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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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Torsional vibration analysis of the gear transmission system of high-speed trains with wheel defects
Proceedings of the Institution of mechanical engineers. Part F, journal of rail and rapid transit, 2020The gear transmission system of a high-speed train is the key component, which delivers the traction torque from the motor to the wheelset. It couples with the vehicle system via the suspension system, gear meshing and the wheel–rail interface.
Zhiwei Wang +5 more
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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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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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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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Vibrational machining with torsional spindle vibrations
Russian Engineering Research, 2016The use of a pulsed variable-speed drive as a vibrational drive is studied theoretically and experimentally. The design of a transmission with controlled velocity fluctuation is considered.
A. Ya. Ryzvanovich +2 more
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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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Torsional vibration damper assembly
The Journal of the Acoustical Society of America, 1980ABSTRACT A torsional vibration damper assembly for use in a torsion coupling or clutch arrangement to provide a low spring rate, high deflection amplitude characteristic. The assembly includes an input means having driving members secured thereto, a hub assembly adapted to be operatively connected to an output means and including a housing containing ...
Don R. Fall, Paul E. Lamarche
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Free torsional vibration of triangle microwire based on modified couple stress theory
, 2020In this article, the free torsional vibration of the noncircular microwire is obtained via modified couple stress theory. The noncircular cross section is considered to be equilateral triangle.
Babak Alizadeh Hamidi +3 more
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Vehicle System Dynamics, 2020
Severe vibrations and an increase in structural component fatigue failures have been observed on a freight locomotive class operating on a heavy haul route within South Africa.
Ulrich Spangenberg
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Severe vibrations and an increase in structural component fatigue failures have been observed on a freight locomotive class operating on a heavy haul route within South Africa.
Ulrich Spangenberg
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