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POSSIBILITIES FOR THE USE OF METAL-HYBRID-STRUCTURES FOR VEHICLE CRASH LOAD CASES

Kriescher, Michael and Salameh, Walid and Beeh, Elmar and Roettger, Jan and Droste, Alexander and Otto, Manuel (2014) POSSIBILITIES FOR THE USE OF METAL-HYBRID-STRUCTURES FOR VEHICLE CRASH LOAD CASES. Euro Hybrid, Stade.

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Abstract

A major challenge of lightweight construction of car bodies, particularly with materials with high density, such as steel, is the need to use a very low wall thickness. This makes the structures sus-ceptible to buckling, especially in crash load cases. The DLR’s institute of vehicle concepts therefore investigates the use of hybrid structures, for exam-ple by reinforcing the steel shell of a beam with lightweight cores. This leads to a higher stability of the structure, especially for the side impact or the pole crash, which results in a much higher weight specific energy absorption. In order to maximize the performance, a specific balance between several parameters such as the wall thickness, the material properties of the core and material properties of the shell, must be achieved. A multi-parameter optimization was therefore conducted, using LS-Dyna and LS-Opt, in order to maximize the weight specific energy absorption. Also, the impact of different materials on the performance of such structures was investigated. Possible uses for metal-hybrid structures are a rocker rail, or a door reinforcement, for example. They are also extensively used in the car body of a lightweight vehicle which is currently under de-velopment at the institute of vehicle concepts.

Item URL in elib:https://elib.dlr.de/89407/
Document Type:Conference or Workshop Item (Speech)
Title:POSSIBILITIES FOR THE USE OF METAL-HYBRID-STRUCTURES FOR VEHICLE CRASH LOAD CASES
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kriescher, Michaelmichael.kriescher (at) dlr.deUNSPECIFIED
Salameh, Walidwalid.salameh (at) dlr.deUNSPECIFIED
Beeh, Elmarelmar.beeh (at) dlr.deUNSPECIFIED
Roettger, Janjroettger (at) dow.comUNSPECIFIED
Droste, AlexanderADroste (at) dow.comUNSPECIFIED
Otto, ManuelM.Otto (at) sz.szmf.deUNSPECIFIED
Date:10 April 2014
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:lightweight design, car body, crash behavior, metal hybrid structures.
Event Title:Euro Hybrid
Event Location:Stade
Event Type:national Conference
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles (old)
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - Project Neuartige Fahrzeugkonzepte und -strukturen (old)
Location: Stuttgart
Institutes and Institutions:Institute of Vehicle Concepts
Deposited By: Kriescher, Michael
Deposited On:23 Jun 2014 13:32
Last Modified:31 Jul 2019 19:46

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