Title: Effects of clamp width on vibration features of fuel pipeline of aero-engine

Authors: Xingsheng Zhang; Guanbing Cheng; Jing Tian

Addresses: Laboratory of Aero-engine Modal Analysis, College of Aeronautical Engineering, Civil Aviation University of China, Tianjin, China ' Laboratory of Aero-engine Modal Analysis, College of Aeronautical Engineering, Civil Aviation University of China, Tianjin, China ' Laboratory of Aero-engine Modal Analysis, College of Aeronautical Engineering, Civil Aviation University of China, Tianjin, China

Abstract: The fuel delivering pipeline for aero-engine plays an important role during the combustor burning, engine control and regulation to make the engine in good operation condition. Therefore, understanding the vibration features of the pipelines is of interest during pipeline design and distribution. The paper established physical models of fuel pipelines with different widths of the clamps. The pipeline resonant frequencies, vibration modes and displacement amplitudes along three directions were obtained by means of finite element method accordingly. The effects of the clamp widths were analysed on those modal parameters by linear static analysis and modal analysis. The results show that the pipeline vibration frequency increases with vibration orders and also shows cluster characteristics. The linear static and modal analysis reveals similar tendencies. The clamp width increases the pipeline stiffness and improves its vibrating frequency. Besides, the vibration shapes revolve due to the symmetric structure of the fuel pipelines.

Keywords: aviation engine; fuel pipeline; natural frequency; vibration mode; clamp width.

DOI: 10.1504/IJWMC.2021.120020

International Journal of Wireless and Mobile Computing, 2021 Vol.21 No.2, pp.153 - 160

Received: 20 Jul 2021
Accepted: 11 Sep 2021
Published online: 04 Jan 2022 *

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