Analysis of Unbalanced Response for Coupled Double-Rotor Spindle System of High Speed Grinder

Chang He Li; Sheng Wang; Yu Cheng Ding

doi:10.4028/www.scientific.net/KEM.522.383

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 522Analysis of Unbalanced Response for Coupled...

Analysis of Unbalanced Response for Coupled Double-Rotor Spindle System of High Speed Grinder

Abstract:

This study was focused on the theoretical modeling and numerical simulation about the unbalanced response for coupled double-rotor spindle system of high speed grinder. Based on the rotor dynamics, a theoretical model was established using the transfer matrix method. The moment balance equations, and the transition matrix, the state vector, field matrix of coupled double-rotor spindle system of high speed grinder were analyzed and calculated. The numerical results showed that the amplitude of unbalance response increased by the same multiple as that of the amount of unbalance at different locations and at different speeds. Furthermore, the position most sensitive to the unbalance was the front end of rotor 2, followed by the middle and back end of rotor 2. Rotor 2 was especially sensitive to unbalance. Moreover, the vibration amplitudes of the front end, front and back bearings of rotor 1 increased in response to unbalanced increase of rotate speed. The vibration amplitude abruptly increased at 17500r/min corresponding to first-order critical speed.

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Periodical:

Key Engineering Materials (Volume 522)

Pages:

383-387

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.522.383

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Online since:

August 2012

Authors:

Chang He Li, Sheng Wang, Yu Cheng Ding

Keywords:

Coupled Double-Rotor Spindle System, High Speed Grinder, Mathematical Models, Unbalanced Response

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References

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