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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2022, Vol. 43 ›› Issue (5): 25332-025332.doi: 10.7527/S1000-6893.2021.25332

• Reviews • Previous Articles     Next Articles

Dynamic characteristics of aero-engine pipeline system: Review

WANG Bo1, GAO Peixin2, MA Hui1,3, SUN Wei1, LIN Junzhe1, LI Hui1, HAN Qingkai1, LIU Zhonghua4   

  1. 1. School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China;
    2. School of Electromechanical and Automotive Engineering, Yantai University, Yantai 264005, China;
    3. Key Laboratory of Vibration and Control of Aero-Propulsion Systems, Ministry of Education, Northeastern University, Shenyang 110819, China;
    4. Shenyang Area 2nd Military Pepresentative Room of Air Force Equipment Department, Shenyang 110043, China
  • Received:2021-01-26 Revised:2021-02-28 Published:2021-04-21
  • Supported by:
    National Natural Science Foundation of China (51805462); National Major Projects of Aero-engines and Gas Turbines (J2019-I-0008-0008)

Abstract: The aero-engine pipeline system is mainly affected by the coupling excitations from both external and internal loads. The external loads transferred to the engine casing include the high pressure and low pressure rotor vibrations, aerodynamic load, combustion chamber flame pulsation and aerodynamic noise excitations, while the internal fluid excitations involve fluid pulsating pressure and impact load caused by the pipeline shape change. Meanwhile, pipelines of different types are connected to the casing and accessories through clamps, supports and brackets, producing considerable structure coupling. These could easily induce excessive vibrations of the pipeline system under multi-source excitations, resulting in crack fatigue faults in pipelines and clamps, necessitating investigation into the dynamic characteristic optimization analysis in the design stage to improve the reliability of the pipeline system and propose the design standards and specifications. Previous dynamics analysis of the pipeline system mainly focused on that of aircraft, ships and other oil pipelines, with few works on aero-engine pipeline systems. The studies on dynamic characteristics of aero-engine pipeline-clamps are reviewed and prospected, including static and dynamic characteristic representations of clamps, dynamic characteristics of different type pipeline systems with elastic support boundaries, fluid-pipelines dynamics, and dynamic optimization of pipeline systems. Finally, theoretical and technical suggestions on the dynamic design and vibration control of aero-engine complex pipeline systems are proposed.

Key words: aero-engines, pipeline systems, dynamic, clamp stiffness, clamp damping, fluid-structure coupling

CLC Number: