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Coupled fluid-structure computational methods for aircraft ditching simulations: Comparison of ALE-FE and SPH-FE approaches

Siemann, Martin and Langrand, Bertrand (2017) Coupled fluid-structure computational methods for aircraft ditching simulations: Comparison of ALE-FE and SPH-FE approaches. Computers & Structures, 188, pp. 95-108. Elsevier. DOI: 10.1016/j.compstruc.2017.04.004 ISSN 0045-7949

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Official URL: http://www.sciencedirect.com/science/article/pii/S0045794916312998

Abstract

This article deals with advanced, coupled numerical approaches for simulating the transient fluid structure-interaction as occurring during aircraft emergency landing on water, i.e. ditching. The structure is discretized using the Finite Element method, while for the fluid domain the Arbitrary Lagrangian-Eulerian and the hybrid Smoothed Particle Hydrodynamics-Finite Element method are employed. First, the structural models are thoroughly validated ensuring differences arising from the use of two software packages to be as small as possible. Secondly, selected benchmark cases of guided ditching experiments are simulated with both numerical approaches and numerical results are compared with experimental data. A good agreement is found for pressure, normal force, and strain time histories. Finally, modeling aspects affecting the results such as the effects of the plasticity computation algorithm, air, and model simplifications are discussed.

Item URL in elib:https://elib.dlr.de/112109/
Document Type:Article
Title:Coupled fluid-structure computational methods for aircraft ditching simulations: Comparison of ALE-FE and SPH-FE approaches
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Siemann, MartinMartin.Siemann (at) dlr.dehttps://orcid.org/0000-0002-7213-0715
Langrand, Bertrandonera-dadsUNSPECIFIED
Date:August 2017
Journal or Publication Title:Computers & Structures
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:188
DOI :10.1016/j.compstruc.2017.04.004
Page Range:pp. 95-108
Publisher:Elsevier
ISSN:0045-7949
Status:Published
Keywords:Aircraft ditching; Fluid-structure interaction; Arbitrary Lagrangian-Eulerian; Coupled Euler-Lagrangian; Smoothed Particle Hydrodynamics
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 - Structures and Materials
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design > Structural Integrity
Deposited By: Siemann, Dr. Martin
Deposited On:19 Sep 2017 13:53
Last Modified:06 Sep 2019 15:19

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