Results 31 to 40 of about 475,895 (274)
Vibrations of a Rotating Blade
The Journal of the Japan Society of Aeronautical Engineering, 1956 The bending vibrations of a rotating blade were investigated by some authors. But, as in the aerofoil seetion the centre of gravity and the centre of twist do not coincide the coupling of bending and twisting vibrations occurs necessarily.In the present investigation the frequencies of the above mentioned coupled vibrations of a rotating blade which ...
openaire +3 more sources
Dynamic Response of a Composite Fan Blade Excited Instantaneously by Multiple MFC Actuators
Aerospace, 2022 The vibration characteristics of a composite fan blade are much more complex than those of a solid titanium fan blade due to the anisotropic material properties and complex excitations coming from unsteady flow and mechanically induced vibration. In this
Yong Chen +4 more
doaj +1 more source
On The Vibration of a Cracked Rotating Blade [PDF]
Shock and Vibration, 1998 The dynamic behavior of a rotating blade containing a transverse crack was investigated. First, the local flexibility of the cracked blade was obtained by using the method of the released energy. An energy principle, in conjunction with a weighted residual method, was then applied to yield the discrete equations of motion.
Ming-Chuan Wu, Shyh-Chin Huang
openaire +2 more sources
Hangkong gongcheng jinzhan, 2018 It is of important significance to study the vibration characteristics and vibration suppression technology of aero-engine rotating blades to improve the engine performance, structural integrity and working reliability.
Qin Jie, Yan Qun, Huang Wenchao
doaj +1 more source
Nihon Kikai Gakkai ronbunshu, 2019 Selected from various Eigen modes of blading, nodal diameter κ= 0 and κ= 1 are both related to shaft torsional and/or axial vibration and shaft bending vibrations respectively.
Hiroki NAKAMURA +4 more
doaj +1 more source
Journal of Low Frequency Noise, Vibration and Active Control, 2021 In this paper, a synchronous vibration control method was proposed to avoid the high-cycle fatigue fracture of aeroengine rotor blade. Firstly. The harmonic force, causing synchronous vibration, was derived by Fourier series expansion by the mean of ...
Sanqun Ren +5 more
doaj +1 more source
Improved Blade Tip Timing in Blade Vibration Monitoring with Torsional Vibration of the Rotor
Journal of Physics: Conference Series, 2012 Due to the complex conditions in rotating machinery, the blades usually encounter fluctuating loads, and failures may occur in the operation. Blade vibration is rarely monitored in the practical rotating machinery in power plants as the traditional blade vibration method using strain gauge method is hard to be applied in long-time and online monitoring.
Chao Liu, Dongxiang Jiang
openaire +1 more source
Blade Serial Number Identification Based on Blade Tip Clearance without OPR Sensor
Shock and Vibration, 2021 Blade serial number identification is one of the key issues in blade tip-timing vibration measurement without once-per-revolution (OPR) sensor. In order to overcome the shortcomings of the existing blade serial number identification methods without OPR ...
Liang Zhang +3 more
doaj +1 more source
Turbocharger blade vibration: Measurement and validation through laser tip-timing [PDF]
, 2012 High Cycle Fatigue (HCF) of turbine blades is a major cause of failure in turbochargers. In order to validate changes to blades intended to reduce fatigue failure, accurate measurement of blade dynamics is necessary. Strain gauging has limitations, so an
Allport, John +11 more
core +1 more source
A study on the vibration dissipation mechanism of the rotating blade with dovetail joint
Journal of Low Frequency Noise, Vibration and Active Control, 2021 The vibration dissipation mechanism of the rotating blade with a dovetail joint is studied in this paper. Dry friction damping plays an indispensable role in the direction of vibration reduction.
Chaofeng Li +3 more
doaj +1 more source