Development of a New Biaxial Testing System for Generating Forming Limit Diagrams for Sheet Metals Under Hot Stamping Conditions

49Citations
Citations of this article
61Readers
Mendeley users who have this article in their library.

Abstract

Conventional experimental approaches used to generate forming limit diagrams (FLDs) for sheet metals at different linear strain paths are not applicable to hot stamping and cold die quenching processes because cooling occurs prior to deformation and consistent values of heating rate, cooling rate, deformation temperature and strain rate are not easy to obtain. A novel biaxial testing system for use in a Gleeble testing machine has been adopted to generate forming limits of sheet metals, including aluminium alloys, magnesium alloys and boron steel, under practical hot stamping conditions in which heating and cooling occur. For example, the soaking temperature is about 900 °C and the deformation temperature range is 550–850 °C for boron steel [1] and the soaking temperature is about 535 °C and the deformation temperature range is 370–510 °C for AA6082 [2]. Resistance heating and air cooling were introduced in this pioneering system and the thermal analysis of different heating and cooling strategies was investigated based on a type of cruciform specimen. FE models with a UAMP subroutine were used to predict temperature fields on a specimen in ABAQUS 6.12. Digital image correlation (DIC) system was used to record strain fields of a specimen by capturing images throughout the deformation history and its post-processing software ARAMIS was used to determine forming limits according to ISO standards embedded in the software. Heating and cooling strategies were determined after the analysis. Preliminary results of forming limit curves at the designated temperatures are presented in order to verify the feasibility of this new method.

References Powered by Scopus

Recent development in aluminium alloys for the automotive industry

2340Citations
N/AReaders
Get full text

Limit strains in the processes of stretch-forming sheet metal

1880Citations
N/AReaders
Get full text

A review on hot stamping

1550Citations
N/AReaders
Get full text

Cited by Powered by Scopus

Advances in anisotropy of plastic behaviour and formability of sheet metals

81Citations
N/AReaders
Get full text

A review on modelling techniques for formability prediction of sheet metal forming

81Citations
N/AReaders
Get full text

An experimental and numerical investigation on the formability of AA7075 sheet in hot stamping condition

63Citations
N/AReaders
Get full text

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Cite

CITATION STYLE

APA

Shao, Z., Li, N., Lin, J., & Dean, T. A. (2016). Development of a New Biaxial Testing System for Generating Forming Limit Diagrams for Sheet Metals Under Hot Stamping Conditions. Experimental Mechanics, 56(9), 1489–1500. https://doi.org/10.1007/s11340-016-0183-9

Readers over time

‘17‘18‘19‘20‘21‘22‘23‘24‘250481216

Readers' Seniority

Tooltip

PhD / Post grad / Masters / Doc 19

61%

Researcher 10

32%

Professor / Associate Prof. 2

6%

Readers' Discipline

Tooltip

Engineering 21

68%

Materials Science 8

26%

Design 1

3%

Business, Management and Accounting 1

3%

Save time finding and organizing research with Mendeley

Sign up for free
0