TR73

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Prof. Dr.-Ing. habil. Ulf Engel



Friedrich-Alexander-Universität Erlangen-Nürnberg
Egerlandstraße 11-13, 91058 Erlangen
Tel.: +49 (0)9131 85 27955
Fax: +49 (0)9131 85 27141
Mail address: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Homepage at the Institute



Projects


Publications

    2018

    • Löffler, M.; Engel, U.; Willner, K.; Beyer, F.; Merklein, M.: Investigation of the tribolgocal behaviour of microstructures for controlling the material flow in sheet-bulk metal forming. In: CIRP Journal of Manufacturing Science and Technology, 22(2018), pp. 66-75

    2017

    • Löffler, M.; Andreas, K.; Engel, U.; Merklein, M.: Identification of tribological mechanisms of shot peened steel surfaces for an application in sheet-bulk metal forming.. In: Martin Levesque (Edt.): Proceedings of the 13th International Conference on Shot Peening, (2017), pp. 67-72

    2016

    • Löffler, M.; Andreas, K.; Engel, U.; Weikert, T.; Tremmel, S.; Wartzack, S.; Stangier, D.; Tillmann, W.; Merklein, M.: Surface modifications for adaption of tribological conditions in sheet-bulk metal forming processes. In: Bobzin, K.; Bouzakis, K.-D.; Denkena, B.; Maier, H.J.; Merklein, M. (Edt.): Proceedings THE "A" Coatings, (2016), PZH Verlag, pp. 13-20
    • Gröbel, D.; Schulte, R.; Hildenbrand, P.; Lechner, M.; Engel, U.; Sieczkarek, P.; Wernicke, S.; , .; Tekkaya, A.; Behrens, B.; Hübner, S.; Vucetic, M.; Koch, S.; Merklein, M.: Manufacturing of functional elements by sheet-bulk metal forming processes. In: Production Engineering, 10(2016)1, pp. 63-80
    • Löffler, M.; Andreas, K.; Engel, U.; Merklein, M.: Applicability of blasted blanks for adaption of tribological conditions in sheet-bulk metal forming. In: Procedia CIRP, 45(2016), pp. 239-242
    • 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. In: Tribology in Industry, 38(2016)2, pp. 163-175
    • Löffler, M.; 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. In: Production Engineering, (2016), published

    2015

    • Löffler, M.; Gröbel, D.; Andreas, K.; Engel, U.; Merklein, M.: Analysis of Effectivness of Locally Adapted Tribological Conditions for Improving Product Quality in Sheet-Bulk Metal Forming. In: Applied Mechnics and Materials, 794(2015), pp. 81-88
    • 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. In: Key Engineering Materials, 639(2015), pp. 267-274
    • Gröbel, D.; Hildenbrand, P.; Engel, U.; Merklein, M.: Influence of tailored blanks on forming of cold forged functional elements in a sheet bulk metal forming process. In: Metec, Stahl-Institut VDEh (Edt.): Proceedings METEC & 2nd ESTAT, (2015), published on CD

    2014

    • Gröbel, D.; Koch, J.; Vierzigmann, U.; Engel, U.; Merklein, M.: Investigations and approaches on material flow of non-uniform arranged cavities in sheet bulk metal forming processes. In: Procedia Engineering, 81(2014), pp. 401-406

    2013

    • Vierzigmann, U.; Schneider, T.; Koch, J.; Merklein, M.; Engel, U.; Hense, R.; Biermann, D.; Krebs, E.; Kersting, P.; Lucas, H.; Denkena, B.; Herper, J.; Tillmann, W.; Stangier, D.: Untersuchungen von Tailored Surfaces für die Blechmassivumformung mittels angepasstem Ringstauchversuch. In: Merklein, M.; Behrens, B. A., Tekkaya, A. E. (Edt.): 2. Workshop Blechmassivumformung, (2013), Bamberg: Meisenbach, pp. 137-162

    2012

    • Vierzigmann, U.; Koch, J.; Merklein, M.; Engel, U.: Material Flow in Sheet-Bulk Metal Forming. In: Key Engineering Materials, 504(2012), Durnten-Zurich: Trans Tech Publications, pp. 1035-1040

    2011

    • Vierzigmann, U.; Merklein, M.; Engel, U.: Tribological Conditions in Sheet-Bulk Metal Forming(2011), published
    • Hauer, F.; Vierzigmann, U.; Willner, K.; Engel, U.: Numerical simulation of friction in metal forming using a halfspace model. In: AIP Conference Proceedings, The 14th International ESAFORM Conference on Material Forming Esaform 2011, doi: 10.1063/1.3589482, 1353(2011), pp. 1741-1746
    • Vierzigmann, U.; Merklein, M.; Engel, U.: Friction Conditions in Sheet-Bulk Metal Forming. In: Procedia Engineering, (2011)19, Amsterdam: Elsevier, pp. 377-382
    • Biermann, D.; Merklein, M.; Engel, U.; Tillmann, W.; Surmann, T.; Hense, R.; Herper, J.; Koch, J.; Vierzigmann, U.; Krebs, E.: Umformwerkzeuge in der Blechmassivumformung. In: : Merklein, M.; Bach, Fr.-W.; Tekkaya, A. E.; (Edt.): 1. Workshop Blechmassivumformung, 1(2011)1, Bamberg: Meisenbach, pp. 119-138

    2010

    • Vierzigmann, U.; Merklein, M.; Engel, U.: Tailored Surfaces in Sheet-Bulk Metal Forming. In: Felder, E.; Montmitonnet P. (Edt.): Proc. 4th Int. Conf. on Tribology in Manufacturing Processes (ICTMP), 2(2010), Paris: Transvalor - Presses des MINES, pp. 541-550

    Presentations

      2011

      • 28.04.2011: Hauer, F.; Vierzigmann, U.; Willner, K.; Engel, U.: Numerical simulation of friction in metal forming using a halfspace model, ESAFORM 2011, Belfast, UK
      • 13.10.2011: Biermann, D.; Merklein, M.; Tillmann, W.; Engel, U.; Surmann, T.; Hense, R.; Herper, J.; Koch, J.; Krebs, E.; Vierzigmann, U.: Umformwerkzeuge in der Blechmassivumformung, 1. Workshop Blechmassivumformung, Erlangen, Germany