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Geometric uncertainties in finite element models of mistuned bladed disks
Author(s) -
KoebeléCousquer Maxime,
Proppe Carsten
Publication year - 2016
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201610324
Subject(s) - mistuning , finite element method , stiffness , eigenvalues and eigenvectors , polynomial , mathematics , mathematical analysis , structural engineering , engineering , physics , vibration , acoustics , quantum mechanics
This paper presents a method to develop reduced‐order models of bladed disks with geometric mistuning, which is based on polynomial choas approximation of modes of random eigenvalue subproblems. This method allows to reduce mass and stiffness matrices without evaluating the deviation in these matrices due to mistuning. (© 2016 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)