Open AccessThe study on lashing ware location of vibration reduction model of detuned blade disc structure
Author(s) -
Limin Wang,
Yang Gao
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1633/1/012070
Subject(s) - mistuning , vibration , displacement (psychology) , finite element method , stiffness , normal mode , structural engineering , reduction (mathematics) , acoustics , physics , engineering , mathematics , geometry , psychology , psychotherapist
The studies on vibration localization of periodic structure are mainly based on displacement modes at present, while the strain modes have not been applied to the research of vibration localization. Consequently, it was imagined to apply the strain modes to vibration localization based on a finite element model of bladed disk with shrouds, and the vibration localization factors based on strain modes and displacement modes were compared with the condition that the bladed disk is mistuning. The result shows that the vibration localization based on strain modes is much more sensitive to stiffness mistuning than the vibration localization based on displacement modes; what’s more, the strain mode shapes are different with the displacement modes at the same mode order. The result is important to the design of periodic structure with snubbing mechanism.