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Numerical study of contact conditions in press hardening for tool wear simulation
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.ORCID iD: 0000-0002-9421-6587
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0003-1162-4671
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0003-1454-1118
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Number of Authors: 5
2017 (English)In: International Journal of Material Forming, ISSN 1960-6206, E-ISSN 1960-6214, Vol. 10, no 5, 717-727 p.Article in journal (Refereed) Published
Abstract [en]

In the press hardening industry, industrial and academic efforts are being directed toward predicting tool wear to realize an economical manufacturing process. Tool wear in press hardening is a tribological response to contact conditions such as pressure and sliding motion. However, these contact conditions are difficult to measure in-situ. Furthermore, press hardening involves high temperatures, and this increases the complexity of the tribo system. The present work investigated the contact conditions of press hardening with a commercial FE code (LS-DYNA) as a base for tool wear simulation. A press hardening experiment was established in industrial environments and evaluated through FE simulations. The numerical model was set up so as to approximate the manufacturing conditions as closely as possible, and the sensitivity with respect to the friction coefficients was examined. The influence of numerical factors such as the penalty value and mesh size on the contact conditions is discussed. The implementation of a modified Archard’s wear model in the FE simulation proved the possibility of tool wear simulation in press hardening. Finally, a comparison between the tool wear simulation and the measured wear depth is presented. 

Place, publisher, year, edition, pages
Springer, 2017. Vol. 10, no 5, 717-727 p.
National Category
Applied Mechanics Tribology
Research subject
Solid Mechanics; Machine Elements
Identifiers
URN: urn:nbn:se:ltu:diva-59831DOI: 10.1007/s12289-016-1314-7OAI: oai:DiVA.org:ltu-59831DiVA: diva2:1038642
Note

Validerad;2017;Nivå 2;2017-09-25 (andbra)

Available from: 2016-10-19 Created: 2016-10-19 Last updated: 2017-10-19Bibliographically approved

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