Volume 37 Issue 4
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HONG Jie, YANG Zhefu, SUN Bo, SONG Zhihong, MA Yanhong. Influence of local rotary inertia on the dynamic properties of rotor systems[J]. Journal of Aerospace Power, 2022, 37(4): 673-683. doi: 10.13224/j.cnki.jasp.20210579
Citation: HONG Jie, YANG Zhefu, SUN Bo, SONG Zhihong, MA Yanhong. Influence of local rotary inertia on the dynamic properties of rotor systems[J]. Journal of Aerospace Power, 2022, 37(4): 673-683. doi: 10.13224/j.cnki.jasp.20210579
shu

Influence of local rotary inertia on the dynamic properties of rotor systems

doi: 10.13224/j.cnki.jasp.20210579
  • 1.

    School of Energy and Power Engineering，Beihang University，Beijing 102206，China

  • 2.

    Research Institute of Aero-Engine，Beihang University，Beijing 102206，China

  • 3.

    Shenyang Engine Research Institute，Aero Engine Corporation of China，Shenyang 110015，China

  • Received Date: 2021-10-13
  • Publish Date: 2022-04-28
    Abstract
  • The spatial location of center of mass and principal axis of inertia was utilized to describe the motion status of rotors.From the general definition of inertial load，the complete expressions of rotary inertial load were derived.Based on this，the continuous shaft model and its differential equations including the local rotary inertial load were established.Results showed that，the rotary inertia of high-speed-spinning disk can be categorized into self-centering of center of mass and self-centering of principle axis of inertia，which increases the forward processing natural frequencies and the bearing dynamic loads；the key to these influences is local angular stiffness between disk and shaft.On this basis，the reason was illustrated for the consistent increase of bearing dynamic load in high-speed range，while the influence of local angular stiffness between disk and shaft on the modal and response characteristics was investigated.The results above are of benefit to the vibrational fault detection and design of rotor structures during the engineering application.

     

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    • References(19)
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