Lüchinger, MarcoVelkavrh, IgorKern, KerstinBaumgartner, MichaelKlien, StefanDiem, AlexanderSchreiner, MichaelTillmann, Wolfgang2019-12-132019-12-132018-04-28http://hdl.handle.net/2003/3843510.17877/DE290R-20366This paper presents a systematic procedure for the development of a constitutive model of friction with focus on the application in bulk metal forming simulations. The empirically based friction model describes friction as a function of sliding distance and the most relevant friction influencing parameters. The latter were determined by means of designed experiments. An optimal friction model is obtained as a trade-off between model accuracy and complexity by using stepwise nonlinear regression and a modified version of the Akaike information criterion. Within this study, the procedure is applied to determine a friction model for tube drawing. However, the same approach can also be used for modeling friction of any other bulk metal forming process.enLubricants;Jg. 6, Heft 2 | S. 42-1-42-12http://creativecommons.org/licenses/by/4.0/FrictionBulk metal formingMathematical modelingDesign of experimentsStepwise regressionAkaike information criterion620670article (journal)ReibungBlechumformenMathematische ModellierungVersuchsplanung