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ACTA AERONAUTICAET ASTRONAUTICA SINICA >

2024 , Vol. 45 >Issue 4: 628303 - 628303

DOI: https://doi.org/10.7527/S1000-6893.2023.28303

Special Topic: Vibration Identification and Suppression Technology of Aeroengine

Vibration transfer path analysis of aeroengine multi-support accessory system

  • Qingyu ZHU ,
  • Qingkai HAN ,
  • Weimin WANG ,
  • Zhinong JIANG
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  • 1.School of Mechanical Engineering，Dalian University of Technology，Dalian 　116024，China
    2.School of Mechanical Engineering and Automation，Northeastern University，Shenyang 　110819，China
    3.College of Mechanical and Electrical Engineering，Beijing University of Chemical Technology，Beijing 　100029，China
E-mail： qk.han@hotmail.com

Received date: 2022-11-23

  Revised date: 2023-02-13

  Accepted date: 2023-03-10

  Online published: 2023-03-17

Supported by

National Natural Science Foundation of China(12072069)

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Abstract

The accessory system is an important component in aero-engines， and excessive engine vibration often causes local damage to the accessory structure. Aiming at an aero-engine lubricating oil tank system supported by multiple mounting pedestals， we perform the vibration Transfer Path Analysis （TPA） of the oil tank under different flight conditions （idle， cruise， and maximum operating speed states）. Firstly， based on the basic principle of the TPA， the TPA Finite Element （FE） model of the lubricating oil tank system is established， and the TPA model validity is verified. Then， based on the measured vibration load spectrum of an aero-engine lubricating oil tank， the vibration responses of multiple target points of the oil tank are simulated and analyzed. Furthermore， based on the simulation TPA method， the contribution of the mounting pedestals to vibration response of the oil tank under different flight conditions is compared and discussed. The results show that the vibration response of the oil tank is relatively large at N1， N2 and 2N1. In the idle and cruise states， the contribution of different vibration transfer directions of the mounting pedestals to the target point vibration response is Y>X>Z. At the maximum operation speed， the Y and X vibration transfer directions of different mounting pedestals have relatively large contributions to the vibration response of the target point. Finally， after reducing the transfer function and operated load of the main transfer path， the vibration response of the oil tank is reduced by 1.5 dB and 2.8 dB， respectively. The TPA analysis method used in this paper can provide guide for the dynamic design of aeroengine complex external accessory systems with multiple supports.

Key words： accessory system; Transfer Path Analysis （TPA）; simulation TPA; transfer function; inverse matrix method; dynamic design

Cite this article

Qingyu ZHU , Qingkai HAN , Weimin WANG , Zhinong JIANG . Vibration transfer path analysis of aeroengine multi-support accessory system[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2024 , 45(4) : 628303 -628303 . DOI: 10.7527/S1000-6893.2023.28303

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Total visits: 6658907 Today visits: 1341