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- W4321383485 abstract "The impact of localized stiffness on the vibration characteristics of mistuned disks is investigated using an annular disk, and the effects of various stiffness amplitudes as well as stiffened regions on the maximum forced response are explored in this work. Based on finite-element simulations and modal tests of prototype thin disk structures, specific wavenumbers continue to pollute and prevent the appearance of various doublet modes over the base number of nodal diameters. By analyzing periodic structures in conjunction with a companion perturbation analysis, we explain how the intrinsic frequencies and wavenumbers of such modes fluctuate and split. To develop and validate resonance conditions, identical experiments with a modal test rig positioned over the structure are performed. The results show that in frequency veering regions when such regions exist, the highest split of double natural frequencies of each modal family occurs. The lower harmonics of the split mode demonstrate the region of localized stiffness together with the response amplitude and contaminated wavenumbers." @default.
- W4321383485 created "2023-02-21" @default.
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- W4321383485 date "2022-10-28" @default.
- W4321383485 modified "2023-09-27" @default.
- W4321383485 title "Vibration Analysis of Mistuned Annular Disk" @default.
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- W4321383485 doi "https://doi.org/10.1109/ecice55674.2022.10042827" @default.
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