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A pragmatic approach for a 3D material model considering elasto-plastic behaviour, damage initiation by Puck or Cuntze and progressive failure of fibre-reinforced plastics

Völkerink, Oliver and Petersen, Enno and Koord, Josef and Hühne, Christian (2020) A pragmatic approach for a 3D material model considering elasto-plastic behaviour, damage initiation by Puck or Cuntze and progressive failure of fibre-reinforced plastics. Computers & Structures, 236 (106280). Elsevier. doi: 10.1016/j.compstruc.2020.106280. ISSN 0045-7949.

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Official URL: http://www.sciencedirect.com/science/article/pii/S0045794920300833

Abstract

Fibre reinforced plastics with tough epoxy and thermoplastic matrices are spreading increasingly in many lightweight applications. For an efficient and reliable design the mechanical behaviour, considering non-linear plasticity, various failure modes under complex loading and damage progression, has to be estimated with numerical simulations. Most state-of-the-art continuum damage mechanics models do not consider the non-linear behaviour of the matrix material or are not suited for 3D solid elements. This work proposes a combined 3D continuum damage/plasticity model. It uses a single parameter flow criterion in combination with Cuntze’s Failure Mode Concept (FMC) for intralaminar failure. The FMC requires no iterative fracture angle search as the Action Plane Strength Criterion by Puck (APSC). This work describes details of the developed model like the coupling of the FMC with a degradation model as well as the implementation into Abaqus/Standard. A validation against open-hole tension tests made out of AS4/PEEK from literature is performed. It can be shown that the prediction of experimental failure loads with the FMC as well as with the APSC provides comparable results. The maximum deviations are between -7.85% and +12.85%. However, the computation times for predictions with the FMC are significantly less than with the APSC.

Item URL in elib:https://elib.dlr.de/135247/
Document Type:Article
Title:A pragmatic approach for a 3D material model considering elasto-plastic behaviour, damage initiation by Puck or Cuntze and progressive failure of fibre-reinforced plastics
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Völkerink, Oliveroliver.voelkerink (at) dlr.dehttps://orcid.org/0000-0002-9589-1963
Petersen, Ennoenno.petersen (at) dlr.dehttps://orcid.org/0000-0002-1488-5618
Koord, JosefJosef.Koord (at) dlr.dehttps://orcid.org/0000-0002-2749-1546
Hühne, ChristianChristian.Huehne (at) dlr.dehttps://orcid.org/0000-0002-2218-1223
Date:19 May 2020
Journal or Publication Title:Computers & Structures
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:236
DOI :10.1016/j.compstruc.2020.106280
Publisher:Elsevier
ISSN:0045-7949
Status:Published
Keywords:Damage mechanics, Finite element analysis (FEA), Failure criterion, Non-linear behaviour, Plastic deformation, Fibre reinforced plastics
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 - Simulation and Validation (old), L - Structures and Materials (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Functional Lightweight Structures
Deposited By: Völkerink, Oliver
Deposited On:21 Jun 2020 16:53
Last Modified:20 Jun 2021 15:53

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