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Evolution of elastic modulus in roll forming
journal contribution
posted on 2017-06-01, 00:00 authored by Armin Abvabi, J Mendiguren, Andreas Kupke, Bernard RolfeBernard Rolfe, Matthias WeissMatthias WeissRoll forming is a continuous process in which a flat strip is incrementally bent to a desired profile. This process is increasingly used in automotive industry to form High Strength Steel (HSS) and Advanced High Strength Steel (AHSS) for structural components. Because of the large variety of applications of roll forming in the industry, Finite Element Analysis (FEA) is increasingly employed for roll forming process design. Formability and springback are two major concerns in the roll forming AHSS materials. Previous studies have shown that the elastic modulus (Young’s modulus) of AHSS materials can change when the material undergoes plastic deformation and the main goal of this study is to investigate the effect of a change in elastic modulus during forming on springback in roll forming. FEA has been applied for the roll forming simulation of a V-section using material data determined by experimental loading-unloading tests performed on mild, XF400, and DP780 steel. The results show that the reduction of the elastic modulus with pre-strain significantly influences springback in the roll forming of high strength steel while its effect is less when a softer steel is formed.
History
Journal
International journal of material formingVolume
10Issue
3Pagination
463 - 471Publisher
SpringerLocation
Paris, FrancePublisher DOI
ISSN
1960-6206eISSN
1960-6214Language
engPublication classification
C Journal article; C1 Refereed article in a scholarly journalCopyright notice
2016, SpringerUsage metrics
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