Lehrstuhl für Fertigungstechnologie, Universität Erlangen-Nürnberg



Dipl.-Ing. Martin Grüner



Egerlandstrasse 13, 91058 Erlangen
Tel.: 09131/85-28317
Fax: 09131/85-28866
Mail address: This e-mail address is being protected from spambots. You need JavaScript enabled to view it


Projects


Research Groups


Publications

    2014

    • Grüner, M.; Merklein, M.:
      Determination of friction coefficients in deep drawing by modification of Siebel's formula for calculation of ideal drawing force.
      Prod. Eng. Res. Devel. 8(2014)5, pp. 577-584

    • Grüner, M.; Gnibl, T.; Merklein, M.:
      Blank hydroforming using granular material as medium - investigations on leakage.
      Procedia Engineering 81(2014), pp. 1035-1042

    2013

    • Plettke, R.; Vipavc, D.; Grüner, M.; Hagenah, H.; Merklein, M.:
      The influence of the annealing process in the fabrication of helical needles for the suture in deep wound cavities.
      Int. J. Computer Integrated Manufacturing (2013), published online

    • Grüner, M.; Merklein, M.:
      Basic experimental and numerical investigations on chip pressing.
      Key Eng. Mater. 554-557(2013), pp. 630-637

    2012

    • Rösel, S.; Merklein, M.; Grüner, M.:
      Analytical and numerical approaches to predict the flow characteristics of a magnetorheological fluid in rotational symmetric cross sections.
      Key Engineering Materials 504-506(2012), pp. 399-404

    • Merklein, M.; Grüner, M.; Rösel, S.:
      Enhancing Process Limits of Blank Hydroforming.
      In: Institut für Umformtechnik (IFU) Universität Stuttgart (Edtrs.): Internationale Konferenz „Hydroumformung von Blechen, Rohren und Profilen“, MAT INFO Werkstoff-Informationsgesellschaft mbH, 2012, pp. 61-80

    • Merklein, M.; Vatter, P.; Plettke, R.; Grüner, M.:
      Einfluss der Fließkurve auf den Rohrbiegeradius.
      Werkstattstechnik online 10(2012), pp. 689-695

    • Plettke, R.; Vipavc, D.; Grüner, M.; Hagenah, H.; Merklein, M.:
      Prototype Manufacturing of Helical Needles for Suture in Deep Wound Cavities.
      In: E. Ceretti, A. Fiorentino, L. Giorleo, C. Giardini (Edtr.): Proc. 1st Int.Conf. Design and Processes for medical devices PROMED, NEOS EDIZIONI srl, 2012, pp. 191-194

    2011

    • Grüner, M.; Merklein, M.:
      Influences on the Molding in Hydroforming Using Granular Material as a Medium.
      In: Chung, K.; Han, H. N.; Huh, H. Barlat, F.; Lee, M.-G. (Edtrs.): AIP Conference Proceedings Volume 1383 - The 8th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes (NUMISHEET 2011), American Institute of Physics, 2011, pp. 645-652

    • Lämsä, J.; Mäntyjärvi, K.; Järvenpää, A.; Grüner, M.; Merklein, M.; Karjalainen, J.:
      Methods for Determination of Residual Stress of a Formed Plate using Laser Ablation, Wire EDM and Milling.
      Key Engineering Materials 473(2011), pp. 368-375

    • Grüner, M.; Merklein, M.:
      Consideration of elastic tool deformation in numerical simulation of hydrofroming with granular material used as a medium.
      Key Engineering Materials 473(2011), pp. 707-714

    • Svec, T.; Grüner, M.; Merklein, M.:
      FE-Simulation of the heat transfer by defined cooling conditions during the hot stamping process.
      Key Engineering Materials 473(2011), pp. 699-706

    2010

    • Grüner, M.; Merklein, M.:
      Comparison of numerical simulation and measurement of shear test and uniaxial compression test to verify material model for granular material used as medium for hydroforming.
      In: Warsaw University of Technology, Faculty of Production Engineering 2010 (Edtr.): Proc. 5th International Conference on Advances in Production Engineering, Publishing and Printing House of the Institute for Suitainable Technologies, 2010, pp. 418-426

    • Grüner, M.; Merklein, M.:
      Numerical Simulation of Hydroforming at Elevated Temperatures with Granular Material Used as Medium Compared to the Real Part Geometry.
      Int J Mater Form 3(2010)1, pp. 279-282

    • Merklein, M.; Wieland, M.; Stöhr, T.; Lechler, J.; Grüner, M.:
      Analytic Methods for the Calculation of the Heat Transfer Coefficient.
      International Review of Mechanical Engineering (2010)4, pp. 208-215

    2009

    • Grüner, M.; Merklein, M.:
      Mechanical Behaviour of Ceramic Beads Used as Medium for Hydroforming at Elevated Temperatures.
      In: Shirvani, B.; Clarke, R.; Duflou, J.; Merklein, M.; Micari, F.; Griffiths, J. (Edtrs.): Proc. 13th Int. Conf. on Sheet Metal (SheMet 2009), Trans Tech Publications, 2009, pp. 61-68

    • Grüner, M.; Merklein, M.:
      Mechanical Behaviour of Ceramic Beads Used as Medium for Hydroforming at Elevated Temperatures.
      Key Engineering Materials (2009)410-411, pp. 61-68

    2008

    • Geiger, M.; Merklein, M.; Hußnätter, W.; Grüner, M.:
      Experimental Determination of Yield Loci for Magnesium Alloy AZ31 under Biaxial Tensile Stress Conditions at Elevated Temperatures.
      Production Engineering 2(2008)3, pp. 303-310

    • Hußnätter, W.; Grüner, M.; Merklein, M.:
      Material Characterization of Sheet Metal at Elevated Temperatures Using Optical Technologies.
      In: AMA Service GmbH (Edtr.): OPTO 2008 - 8. Internationaler Kongress für Optische Technologien, 2008, pp. 87-92