Enhancement of a Constitutive Friction Law by Considering Plastic Smoothing of Rough Surfaces in Dependency on the Bulk Stresses

Beyer F, Löffler M, Willner K, Engel U, Merklein M (2016)

Publication Language: English

Publication Type: Journal article

Publication year: 2016

Journal

Tribology in Industry University of Kragujevac

Publisher: University of Kragujevac

Book Volume: 38

Pages Range: 163-175

Journal Issue: 2

URI: http://www.tribology.fink.rs/journals/2016/2016-2/4.pdf

Open Access Link: http://www.tribology.fink.rs/journals/2016/2016-2/4.pdf

Abstract

The aim of this work is the improvement of a constitutive friction law which has been identified for the specific demands of sheet-bulk metal-forming. The constitutive friction law determines the friction shear stress in dependency on the plastic smoothing of the surface roughness, which also affects the real contact area. An experimental setup is introduced to determine the change of the surface roughness, which is influenced by the tensile bulk stress in the workpiece. In order to model the experimental results, a well-established half-space model is presented and improved to consider strain hardening. The half-space model is used to determine the change of the contact area as a function of the tensile bulk stress. This interdependency is also reflected by the proposed constitutive friction law.

Authors with CRIS profile

Florian Beyer Sonderforschungsbereich/Transregio 73 Umformtechnische Herstellung von komplexen Funktionsbauteilen mit Nebenformelementen aus Feinblechen - Blechmassivumformung Maria Löffler Institute of Manufacturing Technology Kai Willner Professur für Strukturmechanik Ulf Engel Institute of Manufacturing Technology Marion Merklein Institute of Manufacturing Technology

Additional Organisation(s)

Sonderforschungsbereich/Transregio 73, C1: Konstitutives Reibgesetz zur Beschreibung und Optimierung von Tailored Surfaces

Related research project(s)

Constitutive friction law for the description and optimization of tailored surfaces TRR 73: Manufacturing of complex functional components with variants by using a new sheet metal forming process - Sheet-Bulk Metal Forming Jan. 1, 2009 - March 31, 2021

How to cite

APA:

Beyer, F., Löffler, M., Willner, K., Engel, U., & Merklein, M. (2016). Enhancement of a Constitutive Friction Law by Considering Plastic Smoothing of Rough Surfaces in Dependency on the Bulk Stresses. Tribology in Industry, 38(2), 163-175.

MLA:

Beyer, Florian, et al. "Enhancement of a Constitutive Friction Law by Considering Plastic Smoothing of Rough Surfaces in Dependency on the Bulk Stresses." Tribology in Industry 38.2 (2016): 163-175.

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