Friction in sheet metal forming: Influence of surface roughness and strain rate on sheet metal forming simulation resultsShow others and affiliations
2019 (English)In: Procedia Manufacturing / [ed] Duflou, JR; Carette, Y; Fratini, L; Micari, F; Merklein, M; Hagenah, H, Elsevier B.V. , 2019, Vol. 29, p. 512-519Conference paper, Published paper (Refereed)
Abstract [en]
The quality of sheet metal formed parts is strongly dependent on the tribology and friction conditions that are acting in the actual forming process. These friction conditions are then dependent on the tribology system, i.e. the applied sheet material, coating and tooling material, the lubrication and process conditions. Although friction is of key importance, it is currently not considered in detail in sheet metal forming simulations. The current industrial standard is to use a constant (Coulomb) coefficient of friction, which limits the overall simulation accuracy. Since a few years, back there is an ongoing collaboration on friction modelling between Volvo Cars, Tata Steel, TriboForm Engineering, AutoForm Engineering and the University of Twente. In previous papers by the authors, results from lab scale studies and studies of body parts at Volvo Cars, both parts in early tryout for new car models as well as parts in production have been presented. However, the introduction of a new friction model in the sheet metal forming simulations forces the user to gain knowledge about accurate values for new input parameters and question current modeling assumptions. This paper presents results from studies on the influence on the sheet metal forming simulation results from stamping die surface roughness and introduction of strain rate sensitivity in the sheet material model. The study will use a FE-model of a part presented in previous papers. © 2019 The Authors. Published by Elsevier B.V.
Place, publisher, year, edition, pages
Elsevier B.V. , 2019. Vol. 29, p. 512-519
Series
Procedia Manufacturing, E-ISSN 2351-9789
Keywords [en]
Friction modeling, Material modeling, Sheet metal forming simulations, Tribology
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Identifiers
URN: urn:nbn:se:bth-19057DOI: 10.1016/j.promfg.2019.02.169ISI: 000560433600066Scopus ID: 2-s2.0-85076176442OAI: oai:DiVA.org:bth-19057DiVA, id: diva2:1381709
Conference
18th International Conference on Sheet Metal, SHEMET, Leuven, 15 April 2019 through 17 April 2019
Part of project
Model Driven Development and Decision Support – MD3S, Knowledge Foundation
Note
Open access
2019-12-272019-12-272023-04-03Bibliographically approved