elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Crashworthiness Evaluation of Empty and Foam-Filled AZ31B Magnesium Beams under Three-Point Bending

Zhou, Ping and Beeh, Elmar and Friedrich, Horst E. and Kopp, Gundolf and Hampel, Marc (2015) Crashworthiness Evaluation of Empty and Foam-Filled AZ31B Magnesium Beams under Three-Point Bending. FiMPART´15 Enabling Innovation, 12.-15. Juni 2015, Hyderabad, Indien.

[img] PDF
3MB

Abstract

As the lightest structural metal, magnesium alloys have been attractive to reduce vehicle weight and emissions by lightweight design in the automotive industry. As it is known, some die-cast and wrought magnesium alloys have advantages in weight specific energy absorption in some bending and buckling modes compared to steels and aluminium alloys. This study presents a hybrid structure in which a magnesium alloy shell surrounds a lightweight foam core. In order to evaluate the crashworthiness of this hybrid structure under bending loads, both empty and polyurethane foam-filled rectangular section beams, which were made of AZ31B magnesium extrusion and sheet, were constructed and tested by using the quasi-static/dynamic three-point bending facilities at German Aerospace Centre (DLR) – Institute of Vehicle Concepts. Both quasi-static and dynamic tensile/compressive tests on coupon specimens were also carried out to characterize the strain hardening, plastic anisotropy, tension-compression asymmetry and strain rate sensitivity of AZ31B magnesium alloy. The experimental results, which were compared with those from DC04 steel beams, demonstrate that the foam-filled beams have much higher specific energy absorption compared to the empty beams for both magnesium and steel profiles. The foam-filled AZ31B magnesium beams with proper foam density exhibit higher specific energy absorption compared to foam-filled DC04 steel beams.

Item URL in elib:https://elib.dlr.de/98894/
Document Type:Conference or Workshop Item (Speech)
Title:Crashworthiness Evaluation of Empty and Foam-Filled AZ31B Magnesium Beams under Three-Point Bending
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Zhou, Pingping.zhou (at) dlr.deUNSPECIFIED
Beeh, Elmarelmar.beeh (at) dlr.deUNSPECIFIED
Friedrich, Horst E.horst.friedrich (at) dlr.deUNSPECIFIED
Kopp, Gundolfgundolf.kopp (at) dlr.deUNSPECIFIED
Hampel, Marcmarc.hampel (at) dlr.deUNSPECIFIED
Date:2015
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Magnesium alloy; hybrid structure; foam-filled beam; crashworthiness; three-point bending
Event Title:FiMPART´15 Enabling Innovation
Event Location:Hyderabad, Indien
Event Type:international Conference
Event Dates:12.-15. Juni 2015
Organizer:The Materials Research Society of Singapore
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 - NGC Fahrzeugkonzepte (old)
Location: Stuttgart
Institutes and Institutions:Institute of Vehicle Concepts > Lightweight and Hybrid Design Methods
Deposited By: Rohrer, Marc
Deposited On:01 Dec 2015 13:15
Last Modified:31 Jul 2019 19:55

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.