Modal Analysis of a High-Speed Turbomachinery for Reliable Prediction of RD Properties Throughout Operating Speed Range

  • Yuhei Shindo
  • Kazuhiko AdachiEmail author
  • Satoshi Kawasaki
  • Mitsuru Shimagaki
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)


In this study, a novel one-dimensional beam finite element rotor-bearing model considering rotor dynamic (RD) fluid and gyroscopic forces is proposed, and modal analysis of a single shaft turbopump (TP) in the whole operating speed range is performed to predict the rotor dynamic properties of the TP. The effects of both RD fluid and gyroscopic forces on the RD properties of the TP were clearly shown on the Campbell diagram, and the damped natural circular frequencies of the TP within the operating speed range were also successfully identified.


Rotordynamics Fuel turbopump Oxidizer turbopump Rotor dynamic fluid force Gyroscopic force 


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Copyright information

© Society for Experimental Mechanics, Inc. 2019

Authors and Affiliations

  • Yuhei Shindo
    • 1
  • Kazuhiko Adachi
    • 2
    Email author
  • Satoshi Kawasaki
    • 3
  • Mitsuru Shimagaki
    • 3
  1. 1.Department of Mechanical Engineering, Graduate School of EngineeringChubu UniversityKasugaiJapan
  2. 2.Department of Mechanical Engineering, College of EngineeringChubu UniversityKasugaiJapan
  3. 3.Japan Aerospace Exploration AgencyKimigaya, KakudaJapan

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