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Investigation of the strain hardening and Bauschinger Effect of low and high strength steel application in drawbead-tester by experiment and numerical simulation

 
: Sirivedin, K.; Krueger, K.; Thoms, V.; Suesse, D.; Schatz, M.; Müller, R.

:

Tunkasiri, T.:
Smart materials. Selected peer reviewed papers from the International Conference on Smart Materials, Smart/Intelligent Materials and Nanotechnology, Smartmat 2008, & selected peer reviewed papers from the 2nd International Workshop on Functional Materials and Nanomaterials, IWOFM 2008 : 22.-25.04.2008, Chiang Mai, Thailand
Stafa-Zuerich: Trans Tech Publications, 2008 (Advanced materials research 55/57)
ISBN: 0-87849-356-5
ISBN: 978-0-87849-356-2
ISSN: 1662-8985
pp.761-764
International Conference on Smart Materials, Smart/Intelligent Materials and Nanotechnology (Smartmat) <2008, Chiang Mai>
International Workshop on Functional Materials and Nanomaterials (IWOFM) <2, 2008, Chiang Mai>
English
Conference Paper
Fraunhofer IWU ()
drawbead-tester; Bauschinger effect; in-process system; metal forming simulation

Abstract
The research is aimed to investigate Bauschinger effect and strain hardening by the application of drawbead-tester. Generally, the drawbead is used to control the material flow into the die cavity in sheet metal forming process. When the material is flowing into the drawbead, it may cause the development of strain hardening and/or Bauschinger effect. This work consists of two main equipments particularly developed for the experiments. They are: drawbead-tester and three-point bending device. The drawbead-tester provides the possibility to integrate the optical in-process strain analysis system. While the sheet metal was being formed in the drawbead, the local strain of the sheet metal was evaluated. At the same time, the drawbead restraining and holding forces were measured. The three point bending device and numerical simulation method are used to investigate the Bauschinger effect. In the experiment, the cyclic bending forces were measured and compared with the result obtained by the numerical simulation.

: http://publica.fraunhofer.de/documents/N-90071.html