Effect of blank holder force on strain evolution of forming of steel/SRPP fibre metal laminate

J. Nam, Wesley Cantwell, Raj Das, Adrian Lowe, Shankar Kalyanasundaram

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Climate changes brought on by human interventions have proved to be more devastating than predicted during the recent decades. Recognition of seriousness of the situation has led regulatory organisations to impose strict targets on allowable carbon dioxide emissions from automotive vehicles. As a possible solution, it has been proposed that Fibre Metal Laminate (FML) system is used to reduce the weight of future vehicles. To facilitate this investigation, FML based on steel and self-reinforced polypropylene was stamp formed into dome shapes under different blank holder forces (BHFs) at room temperature and its forming behaviour analysed. An open-die configuration was used in a hydraulic press so that a 3D photogrammetric measurement system (ARAMIS) could capture real-time surface strains. This paper presents findings on strain evolutions at different points along and at 45° to fibre directions of circular FML blank, through various stages of forming. It was found initiation and rate of deformation varied with distance from the pole, that the mode of deformations range from biaxial stretching at the pole to drawing towards flange region, at decreasing magnitudes away from the pole in general. More uniform strain distribution was observed for the FML compared to that of plain steel and the most significant effects of BHF were its influence on forming depth and level of strain reached before failure.

Original languageBritish English
Title of host publication8th Australasian Congress on Applied Mechanics, ACAM 2014, as Part of Engineers Australia Convention 2014
EditorsRaj Das, Sabu John
Pages77-86
Number of pages10
ISBN (Electronic)9781922107350
StatePublished - 1 Nov 2014
Event8th Australasian Congress on Applied Mechanics, ACAM 2014, as Part of Engineers Australia Convention 2014 - Melbourne, Australia
Duration: 25 Nov 201426 Nov 2014

Publication series

Name8th Australasian Congress on Applied Mechanics, ACAM 2014, as Part of Engineers Australia Convention 2014

Conference

Conference8th Australasian Congress on Applied Mechanics, ACAM 2014, as Part of Engineers Australia Convention 2014
Country/TerritoryAustralia
CityMelbourne
Period25/11/1426/11/14

Keywords

  • Fibre metal laminate
  • Real-time strain measurement system
  • Self-reinforced polypropylene
  • Stamp forming

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