Dynamic characteristics of a rotor system supported by squeeze film dampers during maneuvering flight: Simulation and experiment

IF 5 1区工程技术 Q1 ENGINEERING, AEROSPACE

Aerospace Science and Technology Pub Date : 2025-03-08 DOI:10.1016/j.ast.2025.110119

Bo Zhang, Xi Chen, Xiangnan Fan, Guangming Ren, Xiaohua Gan

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引用次数: 0

Abstract

With the improvement of maneuverability, the excessive vibration issue of rotor systems in aircraft engines has become increasingly prominent. The dynamic characteristics of a rotor system supported by squeeze film dampers (SFDs) during maneuvering flights were investigated. A comprehensive 6-degree-of-freedom (DOF) finite element model for simulating a gas generator rotor was developed by finite element method (FEM), incorporating the effects of inertial forces induced by maneuvers on the rotor system. The Newmark method combined with Newton-Raphson iteration and an adaptive time-stepping strategy were developed to calculate the transient responses of rotor-SFD-support system. The rotor-SFD-support system was assembled on an innovative experimental platform that simulated different maneuvering flights by imposing base motions on the rotor system. To analyze the simulated and experimental transient responses, time-domain waveforms, Bode diagrams, spectrum cascades, and whirl orbits were illustrated in the cases of various base motions, including rolling, pitching, and yawing. The results revealed that the responses of rotor system are significantly influenced by the gravity and inertial forces induced by base motions. The simulation results were compared with the experimental data to verify the accuracy of the proposed 6-DOF finite element model and the corresponding simulation algorithm. Overall, it provides flexible and efficient modeling, simulation, and experimental methods for analyzing the dynamic characteristics of engine rotor systems during aircraft maneuvers, which is beneficial for the optimization design of aircraft engines.

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来源期刊

Aerospace Science and Technology 工程技术-工程：宇航

CiteScore

10.30

自引率

28.60%

发文量

654

审稿时长

54 days

期刊介绍： Aerospace Science and Technology publishes articles of outstanding scientific quality. Each article is reviewed by two referees. The journal welcomes papers from a wide range of countries. This journal publishes original papers, review articles and short communications related to all fields of aerospace research, fundamental and applied, potential applications of which are clearly related to: • The design and the manufacture of aircraft, helicopters, missiles, launchers and satellites • The control of their environment • The study of various systems they are involved in, as supports or as targets. Authors are invited to submit papers on new advances in the following topics to aerospace applications: • Fluid dynamics • Energetics and propulsion • Materials and structures • Flight mechanics • Navigation, guidance and control • Acoustics • Optics • Electromagnetism and radar • Signal and image processing • Information processing • Data fusion • Decision aid • Human behaviour • Robotics and intelligent systems • Complex system engineering. Etc.