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An improved model for the longitudinal peak strain in the flange of a roll formed U-channel developed by FE-analyses
Högskolan Dalarna, Akademin Industri och samhälle, Materialteknik.
2007 (Engelska)Ingår i: Steel Research International, ISSN 1611-3683, E-ISSN 1869-344X, Vol. 78, nr 1, s. 82-87Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Today one can find cold roll forming (CRF) products in many applications, for example vehicles, furniture and in the building industry. Though CRF is a well known sheet metal process, it is still not entirely understood due to the geometrically complex forming. There are several computer aided engineering (CAE) programs on the market that can assist the tool maker when designing a new CRF machine. However, they are often based on simple formulas when predicting the stress and the strain in the strip. The main objective of this study is to improve formulas for the longitudinal peak membrane strain and the deformation length when a U-channel is formed. These are important since they can be used to determine the number of forming steps and the distance between them. A twolevel factorial design is done using the finite element analysis to investigate which parameters affect the peak strain and the deformation length. The parameters are then used to build models for the peak strain and the deformation length.

Ort, förlag, år, upplaga, sidor
2007. Vol. 78, nr 1, s. 82-87
Nyckelord [en]
cold roll forming, factorial design, finite element analysis
Nationell ämneskategori
Materialteknik
Forskningsämne
Stålformning och ytteknik, Simulering och experimentell undersökning av rullformningsprocessen
Identifikatorer
URN: urn:nbn:se:du-3220ISI: 000244328000012OAI: oai:dalea.du.se:3220DiVA, id: diva2:519927
Tillgänglig från: 2008-03-07 Skapad: 2008-03-07 Senast uppdaterad: 2017-12-07Bibliografiskt granskad

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Lindgren, Michael
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