Results 31 to 40 of about 253 (177)
Journal of Low Frequency Noise, Vibration and Active Control, 2021 Blade crack will cause severe mistuning of hard-coated blisks, which will lead to vibration localization. To identify crack mistuning and analyze influence factors, in this study, a mistuning identification method of blade cracks in hard-coated blisks is
Kunpeng Xu +3 more
doaj +1 more source
Mathematical Problems in Engineering, Volume 2021, Issue 1, 2021., 2021 The prediction of vibration characteristics was studied in the mistuned bladed disk by the mobile interface prestressed component mode synthesis (CMS) superelement method. When the strongly, generally, and weakly coupling in the mistuned bladed disk, according to the results of the direct FEM method, the prediction accuracy of this method was verified ...
Liang Zhang +3 more
wiley +1 more source
IEEE Access, 2019 The blisk is a key component of aero engines, and its surface processing quality directly affects the service performance of the aero engine. In using the new open belt grinding process, different degrees of vibration will occur, and they seriously ...
Y. Liu, Q. Li, Guijian Xiao, Y. Huang
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Applicability Analysis of Inspection and Monitoring Technologies in Wind Turbine Towers
Shock and Vibration, Volume 2021, Issue 1, 2021., 2021 Wind turbines are one of the key systems in wind energy development. The wind tower supporting the whole wind turbine is a towering structure, which has been affected by installation, transportation, environment, and other factors. Furthermore, it is prone to experience other quality problems that would be difficult to detect for wind turbine towers ...
Yanchao Yue +7 more
wiley +1 more source
Nonlinear Dynamics and Vibration Localization of Shrouded Blisk with Contact and Friction Effects
Machines, 2023 Shrouds have been widely used to reduce the level of excessive vibration of blisks. However, complicated nonlinear motion can be induced by the contact and friction between shrouds.
Gaofei Yuan, Yuefang Wang
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Shock and Vibration, Volume 2021, Issue 1, 2021., 2021 Methods based on vibration analysis are currently regarded as the most conclusive means for fault diagnosis and health prognostics in rotary machinery. However, changing working conditions mean that the vibration signals originating from rotary machinery exhibit different levels of complexity.
Yong Chen +3 more
wiley +1 more source
Shock and Vibration, Volume 2021, Issue 1, 2021., 2021 To study the rub‐impact fault between the dynamic and static parts of the rotor system of aeroengines, the dual‐rotor system of a typical aeroengine is introduced and taken as the research object. The analytical kinetic model is established based on the Lagrange equation considering the structural characteristics of the dual‐rotor system, the coupling ...
Pingping Ma +5 more
wiley +1 more source
Shock and Vibration, Volume 2021, Issue 1, 2021., 2021 Tabu genetic cat swarm optimization algorithm is proposed for optimization arrangement on mistuned blades. Furthermore, it is improved to be an innovative parallel algorithm based on Compute Unified Device Architecture (CUDA), whose performance is analyzed both in continuous and discrete solution space.
Yi Cai +5 more
wiley +1 more source
Deterioration effects of coupled blisk blades
Journal of the Global Power and Propulsion Society, 2018 Performance degradation due to wear of high pressure compressors (HPC) is a major concern in aero-engine operation and maintenance. Among other effects especially erosion of airfoils leads to changed aerodynamic behavior and therefore to deterioration.
Andreas Kellersmann +2 more
openaire +3 more sources
Vibration Analysis of Aeroengine Blisk Structure Based on a Prestressed CMS Super-Element Method
Shock and Vibration, 2016 For vibration analysis of aeroengine blisk structure, a prestressed component modal synthesis (CMS) super-element method is put forward with the fixed interface prestressing and free interface super-element approach.
Zhijun Li, Wenjun Yang, Huiqun Yuan
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