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RISMethod for Predicting the Damping Ratio of Ring Dampers in Radial Standing Waves
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Blisks are utilized by most modern aircraft turbine engines to reduce the weight of rotors and eliminate air leakage between platforms. Ring dampers are widely used to reduce the vibration of blisks and avoid high-cycle ...
Mechanisms and Key Parameters for Compressor Blade Stall Flutter
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper describes a fluidstructure interaction (FSI) numerical method in frequency domain to improve the overall understanding of the mechanisms of compressor blade stall flutter and to identify the key flutter parameters. ...
Blade Vibration Stress Determination Method Based on Blade Tip Timing Simulator and Finite Element Method
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Blade tip timing (BTT) measurement technology is more widely used to determine the vibrational stress of rotating blades and play an important role for blade service life prediction. The dynamic blade displacements can be ...
Analysis Method of Nonsynchronous Vibration and Influence of Tip Clearance Flow Instabilities on Nonsynchronous Vibration in an Axial Transonic Compressor Rotor
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The relationship between the tip clearance flow (TCF) and the blade vibration in the lock-in region was numerically investigated on a transonic rotor. Both the bending (1B) and torsional (8th) modes were analyzed under 0 ...
Tribological Properties of Several Surface-Modified Piston Rings Under Extreme Conditions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This article explores the performance of different commercial piston rings when matched with a boron-phosphorus (BP) alloy cast iron cylinder liner, specifically in high-power density diesel engines. The focus is on the ...
Mistuning Effects on Aero elastic Stability of Axial Compressor Rotor Blades
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The mistuning effects on the aeroelastic stability of axial compressor rotor blades have been investigated by employing aeroelastic eigenvalue method. An axial compressor rotor suffered from flutter failure has been analyzed ...
Tip Clearance Effects on Aero elastic Stability of Axial Compressor Blades
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The tip clearance effects on aeroelastic stability of axial compressor blades are investigated with two independent threedimensional (3D) flutter prediction approaches: energy method and aeroelastic eigenvalue analysis. ...
Fatigue Life Prediction of Vortex Reducer Based on Stress Gradient
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The effects of stress gradient and size effect on fatigue life are investigated based on the distribution of stress at the notch root of notched specimens of GH4169 alloy. The relationship between the life of notched ...
Parameter Identification and Sensor Configuration in Tip Timing for Asynchronous Vibration of a Deformed Blade With Finite Element Method Simulated Data Verification
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Blade tip timing (BTT) measurement has been used to measure the vibration of turbomachinery blades in recent years. People researches focus on the development of processing methods. Newly developed BTT processing methods ...