A machine learning assisted preliminary design methodology for bolted composite joints in large structures
Author(s)
Imran Azeem, Omar Ahmed
Type
Journal Article
Abstract
Damage initiation hotspots around features, such as bolts and ply drops, must be investigated during the preliminary design phase of large composite structures, such as composite airframes. A global-local modelling approach is commonly employed to perform this investigation, whereby a global low-fidelity model is used to drive high-fidelity local models around the features of interest. However, this methodology is slow, repetitive and expert-dependent. In this investigation, we address these issues by applying machine learning techniques to this global-local modelling framework and demonstrate the time-saving benefit when predicting damage initiation of bolted composite joints. Feature engineering of model inputs and outputs, and appropriate customisation of machine learning methods enables damage initiation prediction. Special consideration is given to the boundary conditions that must be varied to simulate the response of the bolted composite joints. Results show over three orders of magnitude time-saving benefit and satisfactory accuracy of the proposed methodology. This indicates its potential to be developed further into a rapid design and optimisation tool.
Date Issued
2025-02-01
Date Acceptance
2024-09-05
Citation
The Aeronautical Journal, 2025, 129 (1332), pp.312-325
ISSN
0001-9240
Publisher
Cambridge University Press
Start Page
312
End Page
325
Journal / Book Title
The Aeronautical Journal
Volume
129
Issue
1332
Copyright Statement
© The Author(s), 2024. Published by Cambridge University Press on behalf of Royal Aeronautical Society. This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.
License URL
Identifier
10.1017/aer.2024.104
Publication Status
Published
Date Publish Online
2024-11-07