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Fuzzy uncertainty analysis and reliability assessment of aeroelastic aircraft wings / M. Rezaei; S.A. Fazelzadeh; A. Mazidi; Michael Friswell; Hamed Haddad Khodaparast

The Aeronautical Journal, Volume: 124, Issue: 1275, Pages: 786 - 811

Swansea University Authors: Michael, Friswell, Hamed, Haddad Khodaparast

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DOI (Published version): 10.1017/aer.2020.2

Abstract

In the present study, fuzzy uncertainty and reliability analysis of aeroelastic aircraft wings are investigated. The uncertain air speed and structural parameters are represented by fuzzy triangular membership functions. These uncertainties are propagated through the wing model using a fuzzy interva...

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Published in: The Aeronautical Journal
ISSN: 0001-9240 2059-6464
Published: Cambridge University Press (CUP) 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa54019
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first_indexed 2020-04-23T13:23:06Z
last_indexed 2020-05-16T02:50:22Z
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spelling 2020-05-15T18:58:25.2648696 v2 54019 2020-04-23 Fuzzy uncertainty analysis and reliability assessment of aeroelastic aircraft wings 5894777b8f9c6e64bde3568d68078d40 Michael Friswell Michael Friswell true false f207b17edda9c4c3ea074cbb7555efc1 0000-0002-3721-4980 Hamed Haddad Khodaparast Hamed Haddad Khodaparast true false 2020-04-23 EEN In the present study, fuzzy uncertainty and reliability analysis of aeroelastic aircraft wings are investigated. The uncertain air speed and structural parameters are represented by fuzzy triangular membership functions. These uncertainties are propagated through the wing model using a fuzzy interval approach, and the uncertain flutter speed is obtained as a fuzzy variable. Further, the reliability of the wing flutter is based on the interference area in the pyramid shape defined by the fuzzy flutter speed and air speed. The ratio between the safe region volume and the total volume of the pyramid gives the reliability value. Two different examples are considered—a typical wing section, and a clean wing—and the results are given for various wind speed conditions. The results show that the approach considered is a low-cost but suitable method to estimate the reliability of the wing flutter speed in the presence of uncertainties. Journal Article The Aeronautical Journal 124 1275 786 811 Cambridge University Press (CUP) 0001-9240 2059-6464 1 5 2020 2020-05-01 10.1017/aer.2020.2 COLLEGE NANME Engineering COLLEGE CODE EEN Swansea University 2020-05-15T18:58:25.2648696 2020-04-23T08:34:03.2528726 M. Rezaei 1 S.A. Fazelzadeh 2 A. Mazidi 3 Michael Friswell 4 Hamed Haddad Khodaparast 0000-0002-3721-4980 5 54019__17121__79fcc45737eb49eaadb3d0f00870519a.pdf 54019.pdf 2020-04-23T10:17:25.7853667 Output 12808159 application/pdf Accepted Manuscript true 2020-08-10T00:00:00.0000000 true eng
title Fuzzy uncertainty analysis and reliability assessment of aeroelastic aircraft wings
spellingShingle Fuzzy uncertainty analysis and reliability assessment of aeroelastic aircraft wings
Michael, Friswell
Hamed, Haddad Khodaparast
title_short Fuzzy uncertainty analysis and reliability assessment of aeroelastic aircraft wings
title_full Fuzzy uncertainty analysis and reliability assessment of aeroelastic aircraft wings
title_fullStr Fuzzy uncertainty analysis and reliability assessment of aeroelastic aircraft wings
title_full_unstemmed Fuzzy uncertainty analysis and reliability assessment of aeroelastic aircraft wings
title_sort Fuzzy uncertainty analysis and reliability assessment of aeroelastic aircraft wings
author_id_str_mv 5894777b8f9c6e64bde3568d68078d40
f207b17edda9c4c3ea074cbb7555efc1
author_id_fullname_str_mv 5894777b8f9c6e64bde3568d68078d40_***_Michael, Friswell
f207b17edda9c4c3ea074cbb7555efc1_***_Hamed, Haddad Khodaparast
author Michael, Friswell
Hamed, Haddad Khodaparast
author2 M. Rezaei
S.A. Fazelzadeh
A. Mazidi
Michael Friswell
Hamed Haddad Khodaparast
format Journal article
container_title The Aeronautical Journal
container_volume 124
container_issue 1275
container_start_page 786
publishDate 2020
institution Swansea University
issn 0001-9240
2059-6464
doi_str_mv 10.1017/aer.2020.2
publisher Cambridge University Press (CUP)
document_store_str 1
active_str 0
description In the present study, fuzzy uncertainty and reliability analysis of aeroelastic aircraft wings are investigated. The uncertain air speed and structural parameters are represented by fuzzy triangular membership functions. These uncertainties are propagated through the wing model using a fuzzy interval approach, and the uncertain flutter speed is obtained as a fuzzy variable. Further, the reliability of the wing flutter is based on the interference area in the pyramid shape defined by the fuzzy flutter speed and air speed. The ratio between the safe region volume and the total volume of the pyramid gives the reliability value. Two different examples are considered—a typical wing section, and a clean wing—and the results are given for various wind speed conditions. The results show that the approach considered is a low-cost but suitable method to estimate the reliability of the wing flutter speed in the presence of uncertainties.
published_date 2020-05-01T04:19:49Z
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score 10.78931