Results 211 to 220 of about 13,672 (265)
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Journal of Engineering for Industry, 1961
A method is presented for computing the size and angular location of the correction weights required in selected planes of rotation to balance a flexible shaft rotating at high speeds. It is based on mobility principles and requires a minimal number of measurements.
A. H. Church, R. Plunkett
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A method is presented for computing the size and angular location of the correction weights required in selected planes of rotation to balance a flexible shaft rotating at high speeds. It is based on mobility principles and requires a minimal number of measurements.
A. H. Church, R. Plunkett
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The Journal of the Acoustical Society of America, 1964
The effects of flexibility on balancing may be small for many rotors that operate well below their first critical speed. The effects, however, are always present and, when very small balancing errors are required to produce an acceptable noise level, even small effects can become important.
R. A. Eubanks, Douglas Muster
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The effects of flexibility on balancing may be small for many rotors that operate well below their first critical speed. The effects, however, are always present and, when very small balancing errors are required to produce an acceptable noise level, even small effects can become important.
R. A. Eubanks, Douglas Muster
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Dynamics of Rotor/Bearing System With Flexible Rotor and Flexible Bearing Support
Volume 1D: 16th Biennial Conference on Mechanical Vibration and Noise, 1997Abstract The paper analyzes, theoretically and experimentally, the lowest four lateral modes of an isotropic rotor/fluid-lubricated bearing system with flexible rotor and flexible bearing support. The parameters of the analytical model of the system are identified using sweep-frequency modal testing of the rotor rig.
Agnes Muszynska +2 more
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Journal of Fluids Engineering, 1953
Abstract Bearings serve to link machine parts with relative motion. Sometimes this primary role is exceeded with oil-film bearings, and the self-excited-vibration oil whip occurs. A stability criterion which includes the effect of rotor flexibility has been devised through an electric-analog study, and interpretation on the basis of ...
A. C. Hagg, P. C. Warner
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Abstract Bearings serve to link machine parts with relative motion. Sometimes this primary role is exceeded with oil-film bearings, and the self-excited-vibration oil whip occurs. A stability criterion which includes the effect of rotor flexibility has been devised through an electric-analog study, and interpretation on the basis of ...
A. C. Hagg, P. C. Warner
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1963
Abstract : The determination of the critical speeds of a flexible rotor is usually carried out on the assumptions of negligible bearing mass and stiff ness. In this report the effect of bearing mass and stiffness on the natural frequencies of a uniform flexible shaft is found.
D. E. Dawson, J. E. Panarelli
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Abstract : The determination of the critical speeds of a flexible rotor is usually carried out on the assumptions of negligible bearing mass and stiff ness. In this report the effect of bearing mass and stiffness on the natural frequencies of a uniform flexible shaft is found.
D. E. Dawson, J. E. Panarelli
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1988
Developments which led to modern flexible rotor balancing techniques are described. The theory of flexible rotor balancing is outlined, and the theoretical basis for Modal balancing, and for Influence Coefficient balancing, is presented. In both instances, the publications from which the source material for this section was obtained are identified ...
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Developments which led to modern flexible rotor balancing techniques are described. The theory of flexible rotor balancing is outlined, and the theoretical basis for Modal balancing, and for Influence Coefficient balancing, is presented. In both instances, the publications from which the source material for this section was obtained are identified ...
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Constrained Balancing Techniques for Flexible Rotors
Journal of Mechanical Design, 1979Several methods for identifying the unbalance causing deflection of a flexible rotating shaft are developed. All methods presented permit the magnitude of the balance weights to be controlled. The formulations may be grouped into categories of either time independent schemes or time dependent schemes. The formulations are also characterized by the type
W. D. Pilkey, J. T. Bailey
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A Flexible Rotor on Flexible Supports: Modeling and Experiments
Volume 15: Sound, Vibration and Design, 2009In this study, a flexible rotor with variable support stiffness has been analyzed. Simple support models consisting of mass, spring systems are extracted from modal analysis of the isolated support and by applying static loads to the finite element model of the supports.
Emre Dikmen +4 more
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1984
When discussing flexible rotor balancing from an historical point of view, we can make out three classical development lines, mainly the modal theories developed by Bishop and Federn in England and Germany and the influence coefficient method developed in the USA.
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When discussing flexible rotor balancing from an historical point of view, we can make out three classical development lines, mainly the modal theories developed by Bishop and Federn in England and Germany and the influence coefficient method developed in the USA.
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2009
The goal of this chapter is to discuss the problems that rotor flexibility and hardware limitations introduce in the design of AMB controllers and to present some solution strategies for these problems. Rotor flexibility means that the rotor can have relatively high gain at higher frequencies and this introduces complications in designing controllers ...
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The goal of this chapter is to discuss the problems that rotor flexibility and hardware limitations introduce in the design of AMB controllers and to present some solution strategies for these problems. Rotor flexibility means that the rotor can have relatively high gain at higher frequencies and this introduces complications in designing controllers ...
openaire +1 more source