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contributor authorR. Bladh
contributor authorM. P. Castanier
contributor authorC. Pierre
date accessioned2017-05-08T23:59:35Z
date available2017-05-08T23:59:35Z
date copyrightJuly, 1999
date issued1999
identifier issn1528-8919
identifier otherJETPEZ-26790#515_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/122129
description abstractThis paper presents important improvements and extensions to a computationally efficient reduced order modeling technique for the vibration analysis of mistuned bladed disks. In particular, this work shows how the existing modeling technique is readily extended to turbomachinery rotors with shrouded blades. The modeling technique employs a component mode synthesis approach to systematically generate a reduced order model (ROM) using component modes calculated from a finite element model (FEM) of the rotor. Based on the total number of degrees of freedom, the ROM is typically two or three orders of magnitude smaller than the FEM. This makes it feasible to predict the forced response statistics of mistuned bladed disks using Monte Carlo simulations. In this work, particular attention is devoted to the introduction of mistuning into the ROM of a shrouded assembly. Mistuning is modeled by projecting the mistuned natural frequencies of a single, cantilever blade with free shrouds onto the harmonic modes of the shrouded blade assembly. Thus, the necessary mistuning information may be measured by testing individual blades.
publisherThe American Society of Mechanical Engineers (ASME)
titleReduced Order Modeling and Vibration Analysis of Mistuned Bladed Disk Assemblies With Shrouds
typeJournal Paper
journal volume121
journal issue3
journal titleJournal of Engineering for Gas Turbines and Power
identifier doi10.1115/1.2818503
journal fristpage515
journal lastpage522
identifier eissn0742-4795
keywordsDisks
keywordsModeling
keywordsVibration analysis
keywordsBlades
keywordsManufacturing
keywordsFinite element methods
keywordsRotors
keywordsTesting
keywordsDegrees of freedom
keywordsEngineering simulation
keywordsCantilevers
keywordsFrequency AND Turbomachinery
treeJournal of Engineering for Gas Turbines and Power:;1999:;volume( 121 ):;issue: 003
contenttypeFulltext


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