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Development of a Simulation Methodology to Predict the Energy Absorption of Composite Structures under Crush Loading

Feser, Thomas (2023) Development of a Simulation Methodology to Predict the Energy Absorption of Composite Structures under Crush Loading. DLR-Forschungsbericht. DLR-FB-2022-16. Dissertation. Universität Stuttgart. 231 S. doi: 10.57676/q20b-8f30.

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Abstract

In the present work, a robust simulation methodology is developed that reliably predicts the progressive damage and energy absorption of composite structures. A building block approach is used to investigate damage propagation under crush loading. The thesis provides important modelling guidelines for the successful and computationally efficient simulation of composites under axial crush loading and contributes to reducing the scope of experimental investigations. For the first time, it was shown that the effects of discretisation options depend on the application case and the prevailing failure mode. In particular, the approach of crack band scaling of fracture energy, is not applicable for the simulation of progressive crushing. Within the framework of international research cooperation, it could be shown that this simulation methodology is suitable for comparing different material models in different FE codes. Main effects can already be identified at the lowest level of the building block. Such a simulation methodology is extremely helpful in promoting the approach of certification of civil aircraft through numerical analysis.

Item URL in elib:https://elib.dlr.de/193751/
Document Type:Monograph (DLR-Forschungsbericht, Dissertation)
Title:Development of a Simulation Methodology to Predict the Energy Absorption of Composite Structures under Crush Loading
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Feser, ThomasUNSPECIFIEDhttps://orcid.org/0000-0003-4741-5361UNSPECIFIED
Date:2023
Refereed publication:Yes
Open Access:Yes
DOI:10.57676/q20b-8f30
Number of Pages:231
ISSN:1434-8454
Status:Published
Keywords:Aircraft Crash, Fibre-reinforced composites, Crushing, Finite Element Analysis, Damage Modelling, Continuum Damage Mechanics, Material Modelling, Simulation Methodology
Institution:Universität Stuttgart
Department:Fakultät Luft- und Raumfahrttechnik und Geodäsie, Institut für Flugzeugbau
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Components and Systems
DLR - Research area:Aeronautics
DLR - Program:L CS - Components and Systems
DLR - Research theme (Project):L - Structural Materials and Design
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design > Structural Integrity
Deposited By: Feser, Thomas
Deposited On:03 Feb 2023 08:51
Last Modified:17 Feb 2023 09:41

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