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A New Model of the Fractional Order Dynamics of the Planetary Gears

Author

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  • Vera Nikolic-Stanojevic
  • Ljiljana Veljovic
  • Cemal Dolicanin

Abstract

A theoretical model of planetary gears dynamics is presented. Planetary gears are parametrically excited by the time-varying mesh stiffness that fluctuates as the number of gear tooth pairs in contact changes during gear rotation. In the paper, it has been indicated that even the small disturbance in design realizations of this gear cause nonlinear properties of dynamics which are the source of vibrations and noise in the gear transmission. Dynamic model of the planetary gears with four degrees of freedom is used. Applying the basic principles of analytical mechanics and taking the initial and boundary conditions into consideration, it is possible to obtain the system of equations representing physical meshing process between the two or more gears. This investigation was focused to a new model of the fractional order dynamics of the planetary gear. For this model analytical expressions for the corresponding fractional order modes like one frequency eigen vibrational modes are obtained. For one planetary gear, eigen fractional modes are obtained, and a visualization is presented. By using MathCAD the solution is obtained.

Suggested Citation

  • Vera Nikolic-Stanojevic & Ljiljana Veljovic & Cemal Dolicanin, 2013. "A New Model of the Fractional Order Dynamics of the Planetary Gears," Mathematical Problems in Engineering, Hindawi, vol. 2013, pages 1-14, May.
    • Handle: RePEc:hin:jnlmpe:932150
    DOI: 10.1155/2013/932150
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