Proposal of a New Tool for Pre-Straining Operations of Sheet Metals and an Initial Investigation of CR4 Mild Steel Formability

Barlo, Alexander, M.Sc. Eng. 1994- (författare): Blekinge Tekniska Högskola,Institutionen för maskinteknik

Sigvant, Mats (författare): Blekinge Tekniska Högskola,Institutionen för maskinteknik

Islam, Md. Shafiqul, 1984- (författare): Blekinge Tekniska Högskola,Institutionen för maskinteknik

Tuan Pham, Quoc (författare): Blekinge Tekniska Högskola,Institutionen för maskinteknik

Pilthammar, Johan (författare): Blekinge Tekniska Högskola,Institutionen för maskinteknik

(creator_code:org_t)

IOP PUBLISHING LTD, 2023
2023
Engelska.
Ingår i: 42ND CONFERENCE OF THE INTERNATIONAL DEEP DRAWING RESEARCH GROUP. - : IOP PUBLISHING LTD.

Relaterad länk:: https://doi.org/10.1...; visa fler...; https://bth.diva-por... (primary) (Raw object); https://urn.kb.se/re...; https://doi.org/10.1...; visa färre...

Abstract Ämnesord

Stäng

With the increased focus on reducing carbon emissions in the automotive industry, more advanced materials are introduced to reduce the vehicle weight, and more complex component geometries are designed to both satisfy customer demands and to optimize the vehicle aerodynamically. With the increase in component complexity, the strain paths produced during the forming operation of car body components often display a highly non-linear behavior which makes the task of failure prediction during the manufacturing feasibility studies more difficult. Therefore, CAE engineers need better capabilities to predict failure induced by strain path nonlinearity. This study proposes a new tool designed for creating bi-linear strain paths, by performing a pre-strain of a sheet large enough to cut out Nakajima specimens to perform the post-straining in any direction. From five pre-straining tests the tool present a stable pre-straining operation with a uniform strain field in a radius of 100 [mm] from the centre, corresponding to the region of interest of a Nakajima specimen. From the five pre-strained samples, different Nakajima specimens are cut transverse and longitudinal to the rolling direction and a failure prediction approach in an alternative, path independent evaluation space was used to predict the onset of necking with promising results.

Av författaren/redakt...: Barlo, Alexander ...; Sigvant, Mats; Islam, Md. Shafi ...; Perez, Ll; Olofsson, E.; Al-Fadhli, M.; visa fler...; Tuan Pham, Quoc; Pilthammar, Joha ...; Odenberger, E-L; visa färre...

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Maskinteknik; och Farkostteknik

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