Vibration attenuation of rotating laminated composite fan blade beam using piezoelectric patches
محل انتشار: هجدهمین کنفرانس انجمن هوافضای ایران
سال انتشار: 1398
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 457
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شناسه ملی سند علمی:
AEROSPACE18_024
تاریخ نمایه سازی: 31 اردیبهشت 1399
چکیده مقاله:
Resonant vibrations of the fan blades of the aircraft engine cause fatigue issues in the blades, resulting in the design of thicker blades with low aerodynamic performance, increasing engine weight, fuel consumption and maintenance costs. In order to reduce the resonant vibrations, vibration control has been investigated by piezoelectric patches which allow the design of thinner blades with high performance and minimize fatigue problems in the blades. In this study, the rotating composite fan blade is modeled as a rotating laminated composite beam and the piezoelectric sensor and actuator patches are mounted on the lower and upper surfaces of the beam, respectively, as controllers. Vibration control is performed by means of piezoelectric sensor and actuator pairs in two cases. In the first case, the vibration control of non-rotating beam is investigated under unit pulse load. In the second case, the vibration control of the rotating composite beam is investigated. The classical laminated beam theory with warping deformation is used to express the displacement of the beam. Then, using Hamilton’s principle with the assumed mode method, the equation of motion of the system is obtained. Negative velocity feedback control is used to control the vibrations of the beam in both cases. It is observed that piezoelectric material as sensor and actuator can significantly reduce the vibration amplitude of rotating composite fan blades in aircraft engines.
کلیدواژه ها:
piezoelectric sensor - piezoelectric actuator - vibration control - feedback control – rotating laminated composite beam.
نویسندگان
Mortaza Salehian
Department of Aerospace Engineering, Amirkabir University of Technology, Tehran, Iran.- Centre of Excellence in Computational Aerospace Engineering, Amirkabir University of Technology, Tehran, Iran
Hamid Reza Ovesy
Department of Aerospace Engineering, Amirkabir University of Technology, Tehran, Iran.- Centre of Excellence in Computational Aerospace Engineering, Amirkabir University of Technology, Tehran, Iran
Sayyed Majid Esmailifar
Department of Aerospace Engineering, Amirkabir University of Technology, Tehran, Iran
Masood Yousefi
Department of Aerospace Engineering, Sharif University of Technology, Tehran, Iran