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Springback of thick sheet AHSS subject to bending under tension

Article dans une revue avec comité de lecture
Author
RACZ, Sever-Gabriel
ccCHALAL, Hocine
178323 Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
ccBALAN, Tudor

URI
http://hdl.handle.net/10985/6870
DOI
10.1016/j.ijmecsci.2012.03.011
Date
2012
Journal
International Journal of Mechanical Sciences

Abstract

The springback behavior of four advanced high-strength sheet steels (Dual-Phase, TRIP, ferrite-bainite) with thicknesses ranging from 1.2 to 4 mm was investigated by means of the bending-under-tension (BUT) test. The applicability of several guidelines from the literature was investigated experimentally and numerically. The monotonic decrease of springback as back force increased was confirmed for this category of sheet steels, and a general trend for the non-linear influence of the tool radius was observed. The influence of numerical factors on the predicted values of springback was investigated, and conclusions and simple guidelines were drawn from the analysis with industrial sheet forming applications in mind.

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2014-03-08
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