LiveZilla Live Chat Software

Constellation, le dépôt institutionnel de l'Université du Québec à Chicoutimi

Influence of forming effects on the axial crush response of hydroformed aluminum alloy tubes

Williams B. W., Worswick M. J., D'Amours Guillaume, Rahem Ahmed et Mayer R.. (2010). Influence of forming effects on the axial crush response of hydroformed aluminum alloy tubes. International Journal of Impact Engineering, 37, (10), p. 1008-1020.

[img] PDF
Administrateurs seulement

1MB

URL officielle: http://dx.doi.org/doi:10.1016/j.ijimpeng.2010.04.0...

Résumé

The impact behaviour of tubular hydroformed axial crush tubes is examined. The results of dynamic axial crush tests performed with both non-hydroformed and hydroformed AA5754 aluminum alloy tubes were compared to predictions from finite element models. Explicit dynamic finite element simulations of the hydroforming and crash events were carried out with particular attention to the transfer of forming history from the hydroforming simulations to the crash models. The values of tube thickness, work hardening, and residual stresses at the end of the hydroforming simulations were used as the initial state for the crash models. In general, simulations performed using the von Mises yield criterion with isotropic material behaviour gave reasonable predictions when compared to experimental data. It was found that it was important to account for the forming history of the hydroforming operation in the axial crush models. The results showed that work hardening resulting from hydroforming is beneficial to increasing the energy absorption during crash, whereas thickness reduction decreased the energy absorption. Residual stresses had little effect on the energy absorption characteristics. It was also shown that the energy absorption characteristics of tubes with the same mass could vary greatly by adjusting the geometry of the tube and the amount of work hardening experienced by the tube during hydroforming.

Type de document:Article publié dans une revue avec comité d'évaluation
Volume:37
Numéro:10
Pages:p. 1008-1020
Version évaluée par les pairs:Oui
Date:2010
Sujets:Sciences naturelles et génie > Génie > Génie des matériaux et génie métallurgique
Département, module, service et unité de recherche:Départements et modules > Département des sciences appliquées > Module d'ingénierie
Mots-clés:Aluminum, axial crush, energy absorption, hydroforming
Déposé le:09 juin 2016 17:50
Dernière modification:09 déc. 2016 14:44
Afficher les statistiques de telechargements

Éditer le document (administrateurs uniquement)

Creative Commons LicenseSauf indication contraire, les documents archivés dans Constellation sont rendus disponibles selon les termes de la licence Creative Commons "Paternité, pas d'utilisation commerciale, pas de modification" 2.5 Canada.

Bibliothèque Paul-Émile-Boulet, UQAC
555, boulevard de l'Université
Chicoutimi (Québec)  CANADA G7H 2B1
418 545-5011, poste 5630