Title
Low-fidelity crashworthiness assessment of unconventional aircraft: Modelling of plastic bending
Author
Anand, S. (TU Delft Group Giovani Pereira Castro)
Alderliesten, R.C. (TU Delft Group Alderliesten) 
Castro, Saullo G.P. (TU Delft Group Giovani Pereira Castro)
Date
2024
Abstract
Carbon emissions from commercial aircraft are expected to reach more than twice as much as the current levels by 2050. Unconventional aircraft, such as the Flying-V, are projected to achieve more than 20% fuel savings when compared to conventional configurations. However, these unconventional aircraft configurations pose a unique set of design challenges, being one of them the crashworthiness of wing-fuselage structures, which have an oval-shaped cross section that leads to a significant reduction in space underneath the cabin floor. Evaluating the feasibility of a design early in the design phase is vital to avoid cost overruns and minimize the need for drastic design changes. For assessing crashworthiness early in the design phase, the development of low-fidelity models is an attractive as well as a viable option because these models offer both low computational cost and the capability to conduct parametric studies on the crash structure. To develop and implement such low-fidelity models, we propose to explore the analytical modeling of various energy-absorbing mechanisms, namely axial crushing, plastic bending, and joint failure. In the present study, we present the modelling of plastic bending for beam-like structural members. We also present an envisaged method applying user-defined elements to simulate plastic bending in structural members for cases where the location of plastic hinges cannot be predetermined.
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http://resolver.tudelft.nl/uuid:c683e122-0bdd-4e13-8a64-591b6cb5a618
DOI
https://doi.org/10.2514/6.2024-0833
Publisher
American Institute of Aeronautics and Astronautics Inc. (AIAA)
Embargo date
2024-07-01
ISBN
978-1-62410-711-5
Source
Proceedings of the AIAA SCITECH 2024 Forum
Event
AIAA SCITECH 2024 Forum, 2024-01-08 → 2024-01-12, Orlando, United States
Bibliographical note
Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.
Part of collection
Institutional Repository
Document type
conference paper
Rights
© 2024 S. Anand, R.C. Alderliesten, Saullo G.P. Castro