Volume 34 Issue 11
Nov.  2019
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JIN Guanghu, REN Wei, ZHU Rupeng. Influence of torsional stiffness on load sharing characteristics of power split transmission system[J]. Journal of Aerospace Power, 2019, 34(11): 2478-2489. doi: 10.13224/j.cnki.jasp.2019.11.020
Citation: JIN Guanghu, REN Wei, ZHU Rupeng. Influence of torsional stiffness on load sharing characteristics of power split transmission system[J]. Journal of Aerospace Power, 2019, 34(11): 2478-2489. doi: 10.13224/j.cnki.jasp.2019.11.020
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Influence of torsional stiffness on load sharing characteristics of power split transmission system

doi: 10.13224/j.cnki.jasp.2019.11.020

  • National Key Laboratory of Science and Technology on Helicopter Transmission,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

  • Received Date: 2019-05-19
  • Publish Date: 2019-11-28
    Abstract
  • Considering factors such as the backlash, time-variant mesh stiffness, eccentricity errors, shaft torsion and support stiffness, a dynamic model of the system was developed. The rigid body displacement in the kinetic equation was eliminated by using the force closure feature of the transmission configuration and the method of converting the torsional angular displacement equivalent of the shaft into a linear displacement. The dynamic equations were solved by Runge-Kutta numerical simulation method, and the load-sharing coefficients of the system were obtained. The influence of the torsional stiffness of transmission shaft on the load sharing performance was studied. Results showed that torsional stiffness of input shaft and output shaft had little influence on load sharing performance of each transmission stage of the system; the load sharing coefficients were sensitive to the torsional stiffness of the compound shaft and the spilt torque shafts. Once the compound shaft met the strength requirement and the torsional stiffness took a small value, rationally configuring the torsional stiffness of left-branch and right-branch spilt torque shafts can improve dynamic load sharing performance of system.

     

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