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Title: Crashworthiness of Aluminium Tubes; Part 2: Improvement of Hydroforming Operation to Increase Absorption Energy

Abstract

The motivation to reduce overall vehicle weight within the automotive sector drives the substitution of lightweight materials such as aluminium alloys for structural components. Such a substitution requires a significant amount of development to manufacture structurally parts such that the energy absorption characteristics are not sacrificed in the event of crash. The effects of the manufacturing processes on the crash performance of automotive structural components must be better understood to ensure improved crashworthiness. This paper presents results of an experimental and numerical investigation of the crash response and energy absorption properties of impacted hydroformed aluminium alloy tubes. Crash experiments on hydroformed tubes were performed using a deceleration sled test at the General Motors Technical Center. Results from axial crush testing showed that an important parameter that influences the energy absorption characteristics during crash was the thickness reduction caused by circumferential expansion of the tube during hydroforming. It was found that that the energy absorption decreased as the corner radius decreased, which results because of increased thinning. Sensitivity studies of end feeding parameters, such as end feed level and profile, were carried out to evaluate their impact on the energy absorption of the aluminium tubes.

Authors:
;  [1];  [2]; ;  [3]
  1. National Research Council Canada, Aluminium Technology Centre, 501 University Blvd. East, Chicoutimi, Quebec, G7H 8C3 (Canada)
  2. General Motors Technical Centre, 6250 Chicago Road, Warren, MI (United States)
  3. University of Waterloo, 200 University Avenue West, Waterloo, Ontario, N2L 3G1 (Canada)
Publication Date:
OSTI Identifier:
21061758
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 908; Journal Issue: 1; Conference: NUMIFORM 2007: 9. international conference on numerical methods in industrial forming processes, Porto (Portugal), 17-21 Jun 2007; Other Information: DOI: 10.1063/1.2740907; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ALUMINIUM; ALUMINIUM ALLOYS; ENERGY ABSORPTION; EXPANSION; MANUFACTURING; MATERIALS WORKING; PERFORMANCE; SENSITIVITY ANALYSIS; TESTING; TUBES

Citation Formats

D'Amours, Guillaume, Rahem, Ahmed, Mayer, Robert, Williams, Bruce, and Worswick, Michael. Crashworthiness of Aluminium Tubes; Part 2: Improvement of Hydroforming Operation to Increase Absorption Energy. United States: N. p., 2007. Web. doi:10.1063/1.2740907.
D'Amours, Guillaume, Rahem, Ahmed, Mayer, Robert, Williams, Bruce, & Worswick, Michael. Crashworthiness of Aluminium Tubes; Part 2: Improvement of Hydroforming Operation to Increase Absorption Energy. United States. doi:10.1063/1.2740907.
D'Amours, Guillaume, Rahem, Ahmed, Mayer, Robert, Williams, Bruce, and Worswick, Michael. Thu . "Crashworthiness of Aluminium Tubes; Part 2: Improvement of Hydroforming Operation to Increase Absorption Energy". United States. doi:10.1063/1.2740907.
@article{osti_21061758,
title = {Crashworthiness of Aluminium Tubes; Part 2: Improvement of Hydroforming Operation to Increase Absorption Energy},
author = {D'Amours, Guillaume and Rahem, Ahmed and Mayer, Robert and Williams, Bruce and Worswick, Michael},
abstractNote = {The motivation to reduce overall vehicle weight within the automotive sector drives the substitution of lightweight materials such as aluminium alloys for structural components. Such a substitution requires a significant amount of development to manufacture structurally parts such that the energy absorption characteristics are not sacrificed in the event of crash. The effects of the manufacturing processes on the crash performance of automotive structural components must be better understood to ensure improved crashworthiness. This paper presents results of an experimental and numerical investigation of the crash response and energy absorption properties of impacted hydroformed aluminium alloy tubes. Crash experiments on hydroformed tubes were performed using a deceleration sled test at the General Motors Technical Center. Results from axial crush testing showed that an important parameter that influences the energy absorption characteristics during crash was the thickness reduction caused by circumferential expansion of the tube during hydroforming. It was found that that the energy absorption decreased as the corner radius decreased, which results because of increased thinning. Sensitivity studies of end feeding parameters, such as end feed level and profile, were carried out to evaluate their impact on the energy absorption of the aluminium tubes.},
doi = {10.1063/1.2740907},
journal = {AIP Conference Proceedings},
number = 1,
volume = 908,
place = {United States},
year = {Thu May 17 00:00:00 EDT 2007},
month = {Thu May 17 00:00:00 EDT 2007}
}