Ludwig, Manuel ; Stahlmann, Jörg ; Groche, Peter (2012)
Advanced Friction Model for Cold Forging Processes.
Metal Forming 2012. Krakow, Poland
Konferenzveröffentlichung, Bibliographie
Kurzbeschreibung (Abstract)
To enhance the quality of finite-element-simulations the dependency of field variables significantly influencing friction behavior has to be taken into account. Therefore a new model was developed to optimize friction in the simulation of cold forging processes. The friction coefficient depends on contact normal stress and surface enlargement and accounts for the load dependent surface state. It was developed within experiments in the compression-sliding-test (CST). Due to surface evolutions the gradient of the friction coefficient was implemented in the FE-model. The surface parameter Sq describing the surface flattening during the process was additionally integrated as a field parameter in the FE-simulation. This paper describes the experimentally developed friction model and the implementation in FE-codes. The generality of the friction model is investigated by using implicit and explicit calculation schemes.
| Typ des Eintrags: | Konferenzveröffentlichung |
|---|---|
| Erschienen: | 2012 |
| Autor(en): | Ludwig, Manuel ; Stahlmann, Jörg ; Groche, Peter |
| Art des Eintrags: | Bibliographie |
| Titel: | Advanced Friction Model for Cold Forging Processes |
| Sprache: | Englisch |
| Publikationsjahr: | September 2012 |
| Verlag: | Wiley-VCH Verlag GmbH & Co., Weinheim |
| Veranstaltungstitel: | Metal Forming 2012 |
| Veranstaltungsort: | Krakow, Poland |
| Kurzbeschreibung (Abstract): | To enhance the quality of finite-element-simulations the dependency of field variables significantly influencing friction behavior has to be taken into account. Therefore a new model was developed to optimize friction in the simulation of cold forging processes. The friction coefficient depends on contact normal stress and surface enlargement and accounts for the load dependent surface state. It was developed within experiments in the compression-sliding-test (CST). Due to surface evolutions the gradient of the friction coefficient was implemented in the FE-model. The surface parameter Sq describing the surface flattening during the process was additionally integrated as a field parameter in the FE-simulation. This paper describes the experimentally developed friction model and the implementation in FE-codes. The generality of the friction model is investigated by using implicit and explicit calculation schemes. |
| Freie Schlagworte: | Cold Forging, Friction model, FE-simulation |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Institut für Produktionstechnik und Umformmaschinen (PtU) |
| Hinterlegungsdatum: | 01 Nov 2012 12:09 |
| Letzte Änderung: | 26 Nov 2020 10:24 |
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