Springback analysis of AA5754 after hot stamping: experiments and FE modelling
File(s)
Author(s)
Type
Journal Article
Abstract
In this paper, the springback of the aluminium alloy
AA5754 under hot stamping conditions was characterised under
stretch and pure bending conditions. It was found that
elevated temperature stamping was beneficial for springback
reduction, particularly when using hot dies. Using cold dies,
the flange springback angle decreased by 9.7 % when the
blank temperature was increased from 20 to 450 °C, compared
to the 44.1 % springback reduction when hot dies were used.
Various other forming conditions were also tested, the results
of which were used to verify finite element (FE) simulations
of the processes in order to consolidate the knowledge of
springback. By analysing the tangential stress distributions
along the formed part in the FE models, it was found that
the springback angle is a linear function of the average
through-thickness stress gradient, regardless of the forming
conditions used.
AA5754 under hot stamping conditions was characterised under
stretch and pure bending conditions. It was found that
elevated temperature stamping was beneficial for springback
reduction, particularly when using hot dies. Using cold dies,
the flange springback angle decreased by 9.7 % when the
blank temperature was increased from 20 to 450 °C, compared
to the 44.1 % springback reduction when hot dies were used.
Various other forming conditions were also tested, the results
of which were used to verify finite element (FE) simulations
of the processes in order to consolidate the knowledge of
springback. By analysing the tangential stress distributions
along the formed part in the FE models, it was found that
the springback angle is a linear function of the average
through-thickness stress gradient, regardless of the forming
conditions used.
Date Issued
2016-07-26
Date Acceptance
2016-07-10
Citation
International Journal of Advanced Manufacturing Technology, 2016, 89 (5-8), pp.1339-1352
ISSN
1433-3015
Publisher
Springer Verlag (Germany)
Start Page
1339
End Page
1352
Journal / Book Title
International Journal of Advanced Manufacturing Technology
Volume
89
Issue
5-8
Copyright Statement
© The Author(s) 2016. Open Access.
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
License URL
Sponsor
Technology Strategy Board
Grant Number
BD498D
Subjects
Science & Technology
Technology
Automation & Control Systems
Engineering, Manufacturing
Engineering
Springback
Warm stamping
Hot stamping
Stretch bending
Pure bending
Aluminium alloy AA5754
SOLUTION HEAT-TREATMENT
SHEET-METAL
HFQ PROCESS
ALLOYS
TEMPERATURE
09 Engineering
08 Information And Computing Sciences
01 Mathematical Sciences
Industrial Engineering & Automation
Publication Status
Published