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Prediction of structural response of FRP composites for conceptual design of vehicles under impact loading

Krishnamoorthy, Sivakumara Kannappan and Höptner, Johannes and Kopp, Gundolf and Friedrich, Horst E. (2011) Prediction of structural response of FRP composites for conceptual design of vehicles under impact loading. 8th European LS-DYNA Conference , 23.-24. Mai 2011, Frankreich.

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Abstract

For the predictability of composite material behaviour under highly dynamic loads like crash, there is a need for better models reproducing the exact physics of failure mechanisms (matrix cracking, delamination, heat dissipation etc.). This belongs to the state-of-the-art research topics in numerical modelling. The conceptual design of vehicle structures however requires a qualitative understanding of the load-displacement characteristics, absorbed energy and the load distribution in other structural components and therefore may not necessarily demand a precise modelling of the physical behaviour. From the results of material testing of a variety of composite specimens, the necessary parameters for different LS-DYNA specific constitutive material laws are identified. After that, the modelling and simulation of simplified part samples have been carried out with dynamic loading conditions. The results are then compared with experimental testing of these part samples; hence the suitable parameters for composite design are identified. The scope, drawback and opportunities for numerical prediction using the considered constitutive laws and modelling schemes are then discussed based on the verification of the results.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Prediction of structural response of FRP composites for conceptual design of vehicles under impact loading
Authors:
AuthorsInstitution or Email of Authors
Krishnamoorthy, Sivakumara KannappanUNSPECIFIED
Höptner, JohannesUNSPECIFIED
Kopp, Gundolfgundolf.kopp@dlr.de
Friedrich, Horst E.UNSPECIFIED
Date:2011
Refereed publication:Yes
In ISI Web of Science:No
Status:Published
Keywords:Crashworthiness, Composites, Concept development, Automotive, Lightweight design
Event Title:8th European LS-DYNA Conference
Event Location:Frankreich
Event Type:international Conference
Event Dates:23.-24. Mai 2011
Organizer:ALYOTECH
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:V SH - Verbesserung der Sicherheit im Verkehr (old)
DLR - Research area:Transport
DLR - Program:V SH - Verbesserung der Sicherheit im Verkehr
DLR - Research theme (Project):V - Crashsimulation (old)
Location: Stuttgart
Institutes and Institutions:Institute of Vehicle Concepts > Modeling and Simulation
Deposited By: Dr.-Ing. Sivakumara Kannappan Krishnamoorthy
Deposited On:11 May 2011 13:23
Last Modified:14 Sep 2012 14:55

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