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The coupled vibration in a rotating multi-disk rotor system with grouped blades

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Abstract

The influence on coupling vibrations among shaft-torsion, blade-bending and lacing wire coupling vibrations of a multi-disk rotor system with grouped blades was investigated analytically. The natural frequencies and the mode shapes of the system were solved for one-to four-disk cases as examples. First, numerical results showed how the natural frequencies varied by lacing wires and disks in a multidisk rotor system. The diagrams of the coupling mode shapes were drawn. From the results, the inter-blade (BB) modes, the shaft-blade (SB) modes and the lacing wires-blade (LB) modes change rules were given in this paper. Numerical calculation also revealed three interesting results that the natural frequencies were affected by lacing wire constant, lacing wire location and the disk distance. In the rotation effects, the multi-disk has drawn three important phenomena. The times of instability will due to the number of disk, the more disk rotor causes instability earlier than the less disk case and the lacing wires could not affect the system instability.

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Authors and Affiliations

  1. School of Mechanical and Automotive Engineering, Xiamen University of Technology, Xiamen, 361024, China

    YiJui Chiu

  2. State key laboratory for strength and vibration of mechanical structures, No.28, West Xian’ning Rd, Xi’an, 710000, Shaanxi Province, China

    YiJui Chiu & Chia-Hao Yang

  3. Department of Mechanical Engineering, Taipei Chengshih University of Science and Technology, Taipei, Taiwan

    Chia-Hao Yang

Authors
  1. YiJui Chiu
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  2. Chia-Hao Yang
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Correspondence to YiJui Chiu.

Additional information

Recommended by Associate Editor Ohseop Song

Yi-Jui Chiu He obtained his Ph.D. degree in Mechanical Engineering from the National Taiwan University of Science and Technology, Taiwan in 2008. He has been working on High-Tech Facility Design Center in the National Taiwan University. Now, he is working in the Xiamen University of Technology.

Chia-Hao Yang, He obtained his Ph.D. degree in Department of mechanical engineering, National Taiwan University of Science and Technology. Now, he is an Associate Professor in Department of Mechanical Engineering, Taipei Chengshih University. His special fields of study are Rotor dynamics and Vibration.

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Chiu, Y., Yang, CH. The coupled vibration in a rotating multi-disk rotor system with grouped blades. J Mech Sci Technol 28, 1653–1662 (2014). https://doi.org/10.1007/s12206-014-0310-4

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  • DOI: https://doi.org/10.1007/s12206-014-0310-4

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