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Sensitivity analysis of a finite element model for the simulation of stainless steel tube extrusion
Högskolan Dalarna, Akademin Industri och samhälle, Materialvetenskap. Sandvik Mat Technol, R&D Ctr, SE-81181 Sandviken.
2010 (Engelska)Ingår i: Journal of Materials Processing Technology, ISSN 0924-0136, E-ISSN 1873-4774, Vol. 210, nr 10, s. 1386-1396Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

In this work, a sensitivity analysis has been performed on a finite element model of glass-lubricated extrusion of stainless steel tubes. Fifteen model parameters, including ram speed, billet and tool temperatures, friction coefficients and heat transfer coefficients, were considered. The aim of the study was to determine the parameters that are most important for the response of the extrusion force. The relationship between the model parameters and the responses was analyzed by a calculation of two different regression models: one linear polynomial model and one model that includes interaction terms. Additional simulations were then carried out to validate the regression models. The results show that the initial billet temperature is the factor that has the strongest impact on the extrusion force within the parameter ranges studied in this work. The goodness of prediction and goodness of fit are very good for both regression models.

Ort, förlag, år, upplaga, sidor
Elsevier , 2010. Vol. 210, nr 10, s. 1386-1396
Nyckelord [en]
Extrusion, Stainless steel, Finite element method, Sensitivity analysis, Design of experiments
Nationell ämneskategori
Materialteknik
Forskningsämne
Stålformning och ytteknik
Identifikatorer
URN: urn:nbn:se:du-4899DOI: 10.1016/j.jmatprotec.2010.03.028ISI: 000279547000015OAI: oai:dalea.du.se:4899DiVA, id: diva2:520221
Tillgänglig från: 2010-08-19 Skapad: 2010-08-19 Senast uppdaterad: 2017-12-07Bibliografiskt granskad

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