Volume 36 Issue 8
Aug.  2021
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Article Navigation >  Journal of Aerospace Power  > 2021  >  36(8): 1756-1764
TANG Xin, ZHU Rupeng, LIAO Meijun, XIONG Xingbo, TANG Peng. Analyse bending fatigue strength test of cylindrical gear of third-generation aviation gear steel[J]. Journal of Aerospace Power, 2021, 36(8): 1756-1764. doi: 10.13224/j.cnki.jasp.20200559
Citation: TANG Xin, ZHU Rupeng, LIAO Meijun, XIONG Xingbo, TANG Peng. Analyse bending fatigue strength test of cylindrical gear of third-generation aviation gear steel[J]. Journal of Aerospace Power, 2021, 36(8): 1756-1764. doi: 10.13224/j.cnki.jasp.20200559
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Analyse bending fatigue strength test of cylindrical gear of third-generation aviation gear steel

doi: 10.13224/j.cnki.jasp.20200559

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

  • 2. Science and Technology on Helicopter Transmission Laboratory, Hunan Aviation Powerplant Research Institute, Aero Engine corporation of China, Zhuzhou Hunan 412002, China

  • Received Date: 2020-12-27
  • Publish Date: 2021-08-28
    Abstract
  • Taking the third-generation aviation gear steel gear as the research object, the bending fatigue test of the cylindrical gear made of this material was carried out. The cylindrical gear for bending fatigue test was designed, and the calculation formula of the GB standard gear bending fixture was revised. The bending fatigue test was carried out for the gear of the material. The experimental data were analyzed, and the log -normal distribution and two -parameter Weibull distribution data processing methods were used to fit the data. The bending fatigue limit and R-S-N curve of the test gear were obtained. The performance of test gears and 9310 steel gear was compared and analyzed. The results showed that under the condition of 95% confidence degree and 99% reliability, the bending stress limit of 9310 steel gear was 602 MPa and the bending stress limit of the third-generation aviation gear steel gear was 687. 6 MPa. The bending fatigue performance of the third-generation aviation gear steel gear was 14. 2% higher than that of the 9310 steel,presenting great advantage in aviation gear transmission.

     

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