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Dynamics Response Analysis and Mechanical Experimental Investigation of A Double-Span Multi-Support Shaft System In Micro Gas Turbines
1
The 4th International Conference on Material Strength and Applied Mechanics (MSAM 2021) Conference Secretary, China
2
School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, China
3
School of Mechanical Engineering, Xi'an Jiaotong University, China
Submission date: 2024-02-22
Final revision date: 2024-10-09
Acceptance date: 2024-11-08
Online publication date: 2025-01-25
Corresponding author
Kelly Feng
The 4th International Conference on Material Strength and Applied Mechanics (MSAM 2021) Conference Secretary, The 4th International Conference on Material Strength and Applied Mechanics (MSAM 2021) Conference Secretary, China
The 4th International Conference on Material Strength and Applied Mechanics (MSAM 2021) Conference Secretary, The 4th International Conference on Material Strength and Applied Mechanics (MSAM 2021) Conference Secretary, China
KEYWORDS
micro gas turbinedouble-span multi-support shaft systemdynamics analysisunbalance responseexperiment
TOPICS
stability and vibrations systemsdynamics of machines, vehicles and flying structuresinteligent systemsexperimental mechanics
ABSTRACT
This study delves into analysis of dynamics and experimentation concerning a double-span multi-support shaft system in micro gas turbines. Critical speed analysis was conducted, accompanied by numerical solutions providing insights into the natural frequency. Additionally, an unbalanced response and vibration amplitude of the shaft were calculated, serving as crucial inputs for dynamic balancing considerations. The study also examined the influence of stiffness coefficient variations in bearings on the unbalance response. Dynamic balancing experiments of the motor rotor and the compressor-turbine rotor were conducted separately. Then a vibration experiment for the double-span multi-support shaft was executed at an experimental speed of 60000 r/min. The research revealed that rotors could be regarded as rigid bodies throughout the operational speed range. This study holds significant engineering implications and a practical application value.
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