Abstract
Hybrid finite element analysis was used to analyze the influence of bearing stiffness on the static properties of a planetary gear system with manufacturing errors. The effects of changes in stiffness were similar for most of the manufacturing errors. State variables were most affected by the stiffness of the planet bearings. Floating either the sun or carrier helps to equal load sharing and minimizes the critical tooth stress. The effects of a floating sun and carrier are similar, but it is not recommended that both float, because this can induce greater critical tooth stress. Planet bearing stiffness should be optimized. Both load sharing and critical tooth stress should be considered to determine optimal bearing stiffness.
Similar content being viewed by others
References
ANSol, 2003, “Planetary2D User’s Manual,” Advanced Numerical Solutions.
Bodas, A. and Kahraman, A, 2001, “Influence of Carrier and Gear Manufacturing Errors on the static Planet Load Sharing Behavior of Planetary Gear Sets,”Proc. JSME Int. Conf. on Motion and Power Transmissions, MPT2001-Fukuoka, pp. 633–638.
Cheon, G. J., Lee, D. H., Ryu, H. T., Kim, J. H. and Han, D. C, 1999, “A Study on the Dynamic Characteristics of an Epicyclic Gear Train with Journal Bearing,”SAE 1999-01-1052.
Cheon Gill-Jeong, Oh Jae-Kook, 2003, “Influence of Manufacturing and Asembly Errors on the Static Characteristics of Epicyclic Gear Trains,”Transactions of the KSME, A, Vol. 27, No. 9, pp. 1597–1606.
Cheon Gill-Jeong, 2003, “Influence of Ring Gear Boundary Conditions on the Ststic Characteristics of Epicyclic Gear Trains with Manufacturing Errors,”Transactions of the KSME, A, Vol. 27, No. 11, pp. 1949–1957.
Cheon Gill-Jeong, Parker, R. G., 2004, “Influence of Manufacturing Errors on the Dynamic Characteristics of Planetary Gear Systems,”KSME International Journal, Vol.18 No. 4, pp. 606–621.
Hidaka, T. and Terauchi, Y., 1976, “Dynamic Behavior of Planetary Gear-1st Report, Load Distribution in Planetary Gear,”Bulletin of the JSME, Vol. 19, pp. 690–698.
James, B. and Harris, O., 2002, “Predicting Unequal Planetary Load Sharing Due to Manufacturing Errors and System Deflections, With Validation Against Test Data,”SAE 2002-01-0699.
Kahraman, A., 1994, “Planetary Gear Train Dynamics,”ASME J. of Mechanical Design, Vol. 116, pp. 713–720.
Kahraman, A. and Vijayakar, S., 2001, “Effect of Internal Gear Flexibility on the Quasi-Static Behavior of a Planetary Gear Set,”ASME J. of Mechanical Design, Vol. 123, pp. 408–415.
Kahraman, A., Kharazi, A. A. and Umrani, M., 2003, “A Deformable Body Dynamic Analysis of Planetary Gears with Thin Rims,”J. of Sound and Vibration, 262, pp. 752–768.
Lin, J. and Parker, R. G., 1999, “Analytical Characterization of the Unique Properties of Planetary Gear Free Vibration,”ASME J. of Vibration and Acoustics, Vol. 121, pp. 316–321.
Parker, R. G., Agashe, V. and Vijayakar, S. M., 2000, “Dynamic Response of a Planetary Gear System Using a Finite Element/Contact Mechanics Model,”ASME J. of Mechanical Design, Vol. 122, pp. 304–310.
Townsend, D. P., 1991, “Dudley’s Gear Hand-book,” McGraw Hill.
Vijayakar, S., 1991, “A Combined Surface Integral and Finite Element Solution for a Three- Dimensional Contact Problem,”Int. J. of Numerical Methods Eng., Vol. 31, pp. 525–545.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Gill-Jeong, C., Parker, R.G. Influence of bearing stiffness on the static properties of a planetary gear system with manufacturing errors. KSME International Journal 18, 1978–1988 (2004). https://doi.org/10.1007/BF02990440
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF02990440