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Simulation of CFRP components subjected to dynamic crash loads

Waimer, Matthias and Siemann, Martin and Feser, Thomas (2017) Simulation of CFRP components subjected to dynamic crash loads. International Journal of Impact Engineering, 101, pp. 115-131. Elsevier. DOI: 10.1016/j.ijimpeng.2016.11.011 ISSN 0734-743X

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Abstract

This paper deals with the investigation of a numerical simulation method to appropriately represent relevant failure mechanisms of carbon fiber reinforced plastic (CFRP) components subjected to dynamic crash loads. The presented work considers the stacked shell approach, using a stack of continuum shell elements and cohesive elements, and focuses on the calibration of simulation input parameters. Furthermore, modeling aspects are discussed to reduce mesh-dependencies for the simulation of progressive crushing. The validation of the numerical approach is performed on the basis of an extensive test program of CFRP crush absorbers on the structural level. The capability of current state-of-the-art technologies for the simulation of progressive crushing is identified. The simulations capture general failure effects and force-displacement characteristics for different designs and loading conditions. Drawbacks are identified in the definition of cohesive input parameters to obtain numerical stability for complex loading conditions. The numerical simulations were performed using the commercial finite element software Abaqus/Explicit.

Item URL in elib:https://elib.dlr.de/109305/
Document Type:Article
Title:Simulation of CFRP components subjected to dynamic crash loads
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Waimer, Matthiasmatthias.waimer (at) dlr.deUNSPECIFIED
Siemann, MartinMartin.Siemann (at) dlr.deUNSPECIFIED
Feser, ThomasThomas.Feser (at) dlr.deUNSPECIFIED
Date:2017
Journal or Publication Title:International Journal of Impact Engineering
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:101
DOI :10.1016/j.ijimpeng.2016.11.011
Page Range:pp. 115-131
Publisher:Elsevier
ISSN:0734-743X
Status:Published
Keywords:Crashworthiness, Composite material, Energy Absorption, Crushing, Finite element analysis
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: Waimer, Matthias
Deposited On:19 Dec 2016 11:28
Last Modified:19 Dec 2016 11:28

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