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Evaluation of free interface-based reduction techniques for nonlinear forced response analysis of shrouded blades
Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering ( IF 2.4 ) Pub Date : 2019-08-31 , DOI: 10.1177/0954406219872523
Fahimeh Mashayekhi 1 , Stefano Zucca 2 , Ali S Nobari 1
Affiliation  

Gas turbine bladed disks are subjected to high levels of periodic excitation, which can lead to resonant vibration of blades within the operating range, resulting in large stresses that may cause high cycle fatigue (HCF).1 To accurately predict the vibration amplitude, and therefore the fatigue life of the components, the damping effect of friction forces at contact interfaces such as blade roots, shrouds, flanges, and friction dampers2 must be taken into account.3

中文翻译:

基于自由接口的折减技术对带叶片的非线性力响应分析的评估

燃气轮机叶片盘受到高水平的周期性激励,这可能导致叶片在工作范围内发生共振,从而产生较大的应力,从而可能导致高循环疲劳(HCF)。1为了准确地预测振动幅度,从而准确预测部件的疲劳寿命,必须考虑到接触力(如叶根,护罩,法兰和摩擦阻尼器2)上的摩擦力的阻尼作用。3
更新日期:2020-01-04
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