Finite element assisted prediction of ductile fracture in sheet bulging

Bryan J.Mac Donald, Ruben Lostado Lorza, Shouichirou Yoshihara

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

With growing demand for energy efficiency, there is much focus on reducing oil consumption rates and utilising alternative fuels. A contributor to the solution in this area is to produce lighter vehicles that are more fuel efficient and/or allow for the use of alternative fuel sources (e.g. electric powered automobiles). Near-net-shape manufacturing processes such as hydroforming have great potential to reduce structural weight while still maintaining structural strength and performance. Finite element analysis techniques have proved invaluable in optimizing such hydroforming processes, however, the majority of such studies have used simple predictors of failure which are usually yield criteria such as von Mises stress. There is clearly potential to obtain more optimal solutions using more advanced predictors of failure. This paper compared the Von Mises stress failure criteria and the Oyane's ductile fracture criteria in the sheet hydroforming of magnesium alloys. It was found that the results obtained from the models which used Oyane's ductile fracture criteria were more realistic than those obtained from those that used Von Mises stress as a failure criteria.

Original languageEnglish
Title of host publicationProceedings of the 20th International ESAFORM Conference on Material Forming, ESAFORM 2017
EditorsDermot Brabazon, Inam Ul Ahad, Sumsun Naher
PublisherAmerican Institute of Physics Inc.
Volume1896
ISBN (Electronic)9780735415805
DOIs
Publication statusPublished - 2017 Oct 16
Externally publishedYes
Event20th International ESAFORM Conference on Material Forming, ESAFORM 2017 - Dublin, Ireland
Duration: 2017 Apr 262017 Apr 28

Other

Other20th International ESAFORM Conference on Material Forming, ESAFORM 2017
CountryIreland
CityDublin
Period17/4/2617/4/28

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Donald, B. J. M., Lorza, R. L., & Yoshihara, S. (2017). Finite element assisted prediction of ductile fracture in sheet bulging. In D. Brabazon, I. Ul Ahad, & S. Naher (Eds.), Proceedings of the 20th International ESAFORM Conference on Material Forming, ESAFORM 2017 (Vol. 1896). [080012] American Institute of Physics Inc.. https://doi.org/10.1063/1.5008092