Lehrstuhl für Fertigungstechnologie, Universität Erlangen-Nürnberg



Constitutive Friction Law for the Description and Optimisation of Tailored Surface



Project Status: finished

Members


Due to locally varying load conditions regarding stress and strain states the tribological conditions are of major importance for sheet-bulk metal forming operations (SBMF). Within the subproject C1 of the collaborative research center TR73, which is a collaboration between the Institute of Applied Mechanics and the LFT, the main focus is on the investigation of the tribological conditions in SBMF, qualification of tailored surfaces and the further development of a constitutive friction law. The investigation of the tribological conditions is done by the use of different laboratory friction test which have been adapted to the process conditions in SBMF. Current results revealed that workpiece-side tailored surfaces in terms of surface adjustments by micro structuring and abrasive blasting are suitable methods for influencing the friction factor m and thus, to control the material flow in SBMF processes.

 

Friction factors m of micro structured and abrasive blasted tailored surfaces

 

 

 


Research Groups


Publications

    2016

    • Merklein, M.; Lechner, M.; Gröbel, D.; Löffler, M.; Schneider, T.; Schulte, R.; Hildenbrand, P.:
      Innovative approaches for controlling the material flow in sheet-bulk metal forming processes.
      Manufacturing Review 3(2016)2, pp. 1-17

    • Kersting, D.; Gröbel, D.; Merklein, M.; Sieczkarek, P.; Wernicke, S.; Tekkaya, A. E.; Krebs, E.; Freiburg, D.; Biermann, D.; Weikert, T.; Tremmel, S.; Stangier, D.; Tillmann, W.; Matthias, S.; Reithmeier, E.; Beyer, F.; Willner, K.; Löffler, M.:
      Experimental and numerical analysis of tribological effective surfaces for forming tools in Sheet-Bulk Metal Forming.
      Prod. Eng. doi:10.1007/s11740-015-0651-6 10(2016)1, pp. 37-50

    • Löffler, M.; Andreas, K.; Engel, U.; Weikert, T.; Tremmel, S.; Wartzack, S.; Tillmann, W.; Stangier, D.; Merklein, M.:
      Surface modifications for adaption of tribological conditions in sheet-bulk metal forming processes.
      In: Proceedings THE "A" Coatings (Edtrs.): Bobzin, K.; Bouzakis, K.-D.; Denkena, B.; Maier, H.J.; Merklein, M., 2016, pp. 13-20

    • Löffler, M.; Andreas, K.; Engel, U.; Merklein, M.:
      Applicability of blasted blanks for adaption of tribological conditions in sheet-bulk metal forming.
      Procedia CIRP 45(2016), pp. 239-242

    • Löffler, M.; Andreas, K.:
      Einfluss des Schmierstoffs auf die Werkstückqualität in der Blechmassivumformung.
      In: Tagungsband XXXV. Verformungskundliches Kolloquium (Edtr.): Bruno Buchmayr, 2016, pp. 111-116

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

    • Löffler, M.; Andreas, K.; Engel, U.; Schulte, R.; Gröbel, D.; Krebs, E.; Freiburg, D.; Biermann, D.; Stangier, D.; Tillmann, W.; Weikert, T.; Wartzack, S.; Tremmel, S.; Lucas, H.; Denkena, B.; Merklein, M.:
      Tribological measures for controlling material flow in sheet-bulk metal forming.
      Production Engineering 10(2016), pp. 459-470

    2015

    • Hense, R.; Kersting, P.; Vierzigmann, U.; Löffler, M.; Biermann, D.; Merklein, M.:
      High-Feed Milling of Tailored Surfaces for Sheet-Bulk Metal Forming Tools.
      Production Engineering 9(2015)2, pp. 215-223

    • Löffler, M.; Schneider, T.; Vierzigmann, U.; Engel, U.; Merklein, M.:
      Locally Adapted Tribological Conditions as a Method for Influencing the Material Flow in Sheet-Bulk Metal Forming Processes.
      Key Engineering Materials 639(2015), pp. 267-274

    • Hildenbrand, P.; Sieczkarek, P.; Matthias, S.; Löffler, M.; Besserer, H.:
      Inkrementelles Umformen dünnwandiger Funktionsbauteile unter Einsatz prozessangepasster Halbzeuge durch Verfahren der Blechmassivumformung.
      In: Tagungsband zum 18. Workshop Simulation in der Umformtechnik & 3. Industriekolloquium Blechmassivumformung 2015 - DFG Transregio 73 (Edtrs.): Tekkaya, A. E.; Liewald, M.; Merklein, M.; Behrens, B.-A., Shaker Verlag Aachen, 2015, pp. 149-170

    • Löffler, M.; Freiburg, D.; Gröbel, D.; Loderer, A.; Mattthias, S. ; Stangier, D. ; Weikert, T. :
      Untersuchung von Tailored Surfaces hinsichtlich ihres tribologischen Einflusses auf Prozesse der Blechmassivumformung.
      In: Tagungsband zum 18. Workshop Blechmassivumformung & 3. Industriekolloquium Blechmassivumformung 2015 - DFG Transregio 73 (Edtrs.): Tekkaya, A. E.; Liewald, M.; Merklein, M.; Behrens, B.-A. , Shaker Verlag Aachen , 2015, pp. 132-146

    • Merklein, M.; Löffler, M.; Schneider, T.:
      Plastic flow and its control in sheet-bulk metal forming of thin-walled functional components.
      CIRP Annals - Manufacturing Technology 64(2015)1, pp. 245-248

    • Löffler, M.; Gröbel, D.; Engel, U.; Andreas, K.; Merklein, M.:
      Analysis of Effectiveness of Locally Adapted Tribological Conditions for Improving Product Quality in Sheet-Bulk Metal Forming.
      Applied Mechanics and Materials 794(2015), pp. 81-88

    • Merklein, M.; Gröbel, D.; Löffler, M.; Schneider, T.; Hildenbrand, P.:
      Sheet-bulk metal forming – forming of functional components from sheet metals.
      In: Y. Qin, T.A. Dean, J. Lin, S.J. Yuan, F. Vollertsen (Edtr.): Proceedings of the 4th International Conference on New Forming Technology, MATEC Web of Conferences, 2015, pp. 01001 1-12

    2014

    • Schneider, T.; Vierzigmann, U.; Merklein, M.:
      Analysis of Varying Properties of Semi-finished Products in Sheet-bulk Metal Forming of Functional Components.
      AIP Conference Proceedings 1567(2014)1, pp. 930-933

    • Merklein, M.; Andreas, K.; Gröbel, D.; Hildenbrand, P.; Müller, M.; Noneder, J.; Zimmermann, A.; Schneider, T.; Vierzigmann, U.:
      Potenziale und Grenzen der Simulation in der Fertigungstechnik.
      In: simufact engineering GmbH (Edtr.): Tagungsband 15. RoundTable - Simulating Manufacturing, ISBN: 978-3-9813814-3-6, 2014, pp. 1-38

    2012

    • Vierzigmann, U.; Koch, J.; Merklein, M.; Engel, U.:
      Material Flow in Sheet-Bulk Metal Forming.
      Key Eng. Mater. 504-506 (2012), pp. 1035-1040

    2011

    • Vierzigmann, U.; Merklein, M.; Engel, U.:
      Tribological Conditions in Sheet-Bulk Metal Forming.
      In: (Edtr.): 2nd International Conference of Engineering Against Fracture, 2011, published

    • Hauer, F.; Vierzigmann, U.; Willner, K.; Engel, U.:
      Numerical simulation of friction in metal forming using a halfspace model.
      In: Menary, G. (Edtr.): The 14th International ESAFORM Conference on Material Forming, 2011, pp. 1741-1747

    • Vierzigmann, U.; Merklein, M.; Engel, U.:
      Friction Conditions in Sheet-Bulk Metal Forming.
      In: (Edtr.): Procedia Engineering, Elsevier, 2011, pp. 377–382

    • Biermann, D.; Merklein, M.; Engel, U.; Tillmann, W. ; Surmann, T. ; Hense, R.; Herper, J. ; Koch, J.; Krebs, E. ; Vierzigmann, U.:
      Umformwerkzeuge in der Blechmassivumformung.
      In: Merklein, M.; Bach, Fr.-W.; Tekkaya, A. E. (Edtrs.): 1. Workshop Blechmassivumformung, Meisenbach, 2011, pp. 119-138

    2010

    • Merklein, M.; Koch, J.; Schneider, T.; Opel, S.; Vierzigmann, U.:
      Manufacturing of Complex Functional Components with Variants by Using a new Metal Forming Process – Sheet-Bulk Metal Forming.
      International Journal of Material Forming 3 (2010), pp. 347-350

    • Vierzigmann, U.; Merklein, M.; Engel, U.:
      Tailored Surfaces in Sheet-Bulk Metal Forming.
      In: Felder, E.; Montmitonnet, P. (Edtrs.): Proc. 4th International Conference on Tribology in Manufacturing Processes (ICTMP), Transvalor - Presses des MINES, 2010, pp. 541-550

    Letztes Update: 14.07.2017