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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 Weiss
Roll 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 forming

Volume

10

Issue

3

Pagination

463 - 471

Publisher

Springer

Location

Paris, France

ISSN

1960-6206

eISSN

1960-6214

Language

eng

Publication classification

C Journal article; C1 Refereed article in a scholarly journal

Copyright notice

2016, Springer