A Study on the Vibrational Characteristics of a Foot Mount Type Gearbox for Epicyclic Gear Train

바닥고정형 유성기어박스의 진동특성에 관한 연구

  • Published : 2000.10.01


In this paper, the vibrational characteristics of a foot mount type gearbox for epicyclic gear train have been studied. The modal parameters and mode shapes of a gearbox have been computed using AN SYS code. Modal testing was carried out to verify the FEM analysis model. It has been shown that the analysis results are in good agreements with the experimental results. Harmonic analysis has been executed to verify the effect of thickness variance of gearbox housing on the modal response. Analyzing the calculated results, some guides for optimal vibration response has been deduced.


Epicyclic Gear Train;Gearbox;Modal Testing;Modal Analysis;Finite Element Analysis


  1. ANSYS-Engineering Analysis System, 1989, 'Theoretical Manual,' Swanson Analysis Systems, Inc
  2. Ewins D. J., 1986, 'Modal Testing : Theory and Practice,' Bruel & Kjaer
  3. Lin D. C., Golnaraghi M. F. and Ismail F., 1997, 'The Dimension of the Gearbox Signal,' J. of Sound and Vibration, Vol. 208, No. 4, pp. 664-670
  4. 이희원, 손병진, 신용하, 1994, '호이스트 기어 박스의 소음불량률 저감을 위한 실험적 연구,' 대한기계학회논문집, 제 18권 제5호, pp. 1347-1354
  5. Lee, S. K., 1999, 'Application of the L-Wigner Distribution to the Diagnosis of Local Defects Of Gear Tooth,' KSME International Journal, Vol. 13, No. 2, pp. 144-157
  6. Lee S. K. and White P. R, 1999, 'Two-Stage Adaptive Line Enhancer and Wigner Trispectrum for the Characterization of Faults from Gear Box Vibration Data,' Transactions of the ASME J. of Vibration and Acoustics, Vol. 121, pp. 488-494
  7. Staszevski W. J., Worden K. and Tomilnson G. R., 1997, 'Time-Frequency Analysis in Gearbox Fault Detection Using the Wigner-Vile Distribution and Pattern Recognition', Mechanical Systems and Signal Processing, Vol. 11, No. 5, pp. 673-692
  8. Cornejo G. and Rakhit A. K., 1996, 'Identification of Spiking Vibrations in Gears and Their Effects on the Performance of Gearbox in High Speed Applications,' DE-Vol. 88, Power Transmission and Gearing Conference ASME, pp. 195-203
  9. Jammu V. B. and Danai K., 1998, 'Structure-Based Connectionist Network for Fault Diagnosis of Helicopter Gearboxes,' Transactions of the ASME J. of Mechanical Design, Vol. 120, pp. 100-105
  10. Van Roosmalen A. N. J., 1995, 'Noise Generation Mechanism of Gear Transmissions,' IMechE International Conference, pp. 141-151
  11. Oswald F., Townsend D. P., Valco M. J., Spencer R. H., Drago R. J. and Lenski J. W., 1994, 'International Gearing conference, pp. 81-86
  12. Zhang T. and Kohler H.K., 1994, 'A Gearbox Structural Optimization Procedure for Minimizing Noise Radiation,' International Gearing conference, pp. 87-91
  13. Inoue K. and Krantz T. L., 1995, 'Minimization of Vibration Energy of Thin Plate Structures and the Application to the Reduction of Gearbox Vibration,' NASA Technical Report ARL-TR-722
  14. Tanaka N., Maezawa K., Matsuyqma T. and Nakamura Y., 1990, 'Experiments and Finite Element Analysis on Bridle Drive Gearbox Noise and Vibration,' Proc. of the Institution of Mechanical Eng., Vol. 1, pp. 63-68
  15. Maruyama N. , Morikawa K. and Hitomi N., 1992, 'Gear Case Shape and Rib Distribution for Reducing Automobile Transmission Gear Noise,' Pros. International Power Transmission and Gearing Conference, Vol. 2, pp. 583-588