Khodaparast, H.H. and Govers, Yves and Dayyani, I. and Adhikari, S. and Link, M. and Friswell, M.I. and Mottershead, J.E. and Sienz, J. (2017) Fuzzy finite element model updating of the DLR AIRMOD test structure. Applied Mathematical Modelling, 52, pp. 512-526. Elsevier. ISSN 0307-904X.
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Official URL: https://doi.org/10.1016/j.apm.2017.08.001
Abstract
This article presents the application of finite-element fuzzy model updating to the DLR AIRMOD structure. The proposed approach is initially demonstrated on a simulated mass-spring system with three degrees of freedom. Considering the effect of the assembly process on variability measurements, modal tests were carried out for the repeatedly disassembled and reassembled DLR AIRMOD structure. The histograms of the measured data attributed to the uncertainty of the structural components in terms of mass and stiffness are utilised to obtain the membership functions of the chosen fuzzy outputs and to determine the updated membership functions of the uncertain input parameters represented by fuzzy variables. In this regard, a fuzzy parameter is introduced to represent a set of interval parameters through the membership function, and a meta model (kriging, in this work) is used to speed up the updating. The use of non-probabilistic models, i.e. interval and fuzzy models, for updating models with uncertainties is often more practical when the large quantities of test data that are necessary for probabilistic model updating are unavailable.
Item URL in elib: | https://elib.dlr.de/115928/ | |||||||||||||||||||||||||||
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Document Type: | Article | |||||||||||||||||||||||||||
Title: | Fuzzy finite element model updating of the DLR AIRMOD test structure | |||||||||||||||||||||||||||
Authors: |
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Date: | 2017 | |||||||||||||||||||||||||||
Journal or Publication Title: | Applied Mathematical Modelling | |||||||||||||||||||||||||||
Refereed publication: | Yes | |||||||||||||||||||||||||||
Open Access: | No | |||||||||||||||||||||||||||
Gold Open Access: | No | |||||||||||||||||||||||||||
In SCOPUS: | Yes | |||||||||||||||||||||||||||
In ISI Web of Science: | Yes | |||||||||||||||||||||||||||
Volume: | 52 | |||||||||||||||||||||||||||
Page Range: | pp. 512-526 | |||||||||||||||||||||||||||
Editors: |
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Publisher: | Elsevier | |||||||||||||||||||||||||||
ISSN: | 0307-904X | |||||||||||||||||||||||||||
Status: | Published | |||||||||||||||||||||||||||
Keywords: | fuzzy variable, model updating, AIRMOD structure | |||||||||||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | |||||||||||||||||||||||||||
HGF - Program: | Aeronautics | |||||||||||||||||||||||||||
HGF - Program Themes: | fixed-wing aircraft | |||||||||||||||||||||||||||
DLR - Research area: | Aeronautics | |||||||||||||||||||||||||||
DLR - Program: | L AR - Aircraft Research | |||||||||||||||||||||||||||
DLR - Research theme (Project): | L - Flight Physics (old) | |||||||||||||||||||||||||||
Location: | Göttingen | |||||||||||||||||||||||||||
Institutes and Institutions: | Institute of Aeroelasticity > Structural Dynamics and System Identification | |||||||||||||||||||||||||||
Deposited By: | Grischke, Birgid | |||||||||||||||||||||||||||
Deposited On: | 14 Dec 2017 11:27 | |||||||||||||||||||||||||||
Last Modified: | 14 Dec 2017 11:27 |
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