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Dr.-Ing. Stefanie Elgeti (AkadOR)


Contact
Room 220
Schinkelstraße 2
52062 Aachen
Phone:  +49 241 80 99922
Fax:  +49 241 80 99910
E-mail:  elgeti@cats.rwth-aachen.de

Research Interests

  • numerical die design for mold-based manufacturing technologies based on shape optimization using T-splines (projects are part of the cluster of excellence Integrative Production Technology for High Wage Countries)
    • plastics profile extrusion
    • high-pressure die casting
  • free-surface and two-fluid flows
    • drops in a surrounding fluid
    • viscoelastic die swell
    • sloshing tanks
  • selected methods
    • space-time finite element method
    • interface tracking approaches
    • NURBS-enhaced finite element method
    • isogeometric analysis

Teaching

  • Winter semester: Isogeometric Analysis
  • Summer semester: Exercise in Simulation Methods in Mechanical Engineering
  • Publications

    Journal Publications

    ACME A. Stavrev, P. Knechtges, S. Elgeti and A. Huerta, Space-Time NURBS-Enhanced Finite Elements for Free-Surface Flows in 2D, International Journal for Numerical Methods in Fluids, 81(7):397-459, 2016.
    ACME R. Siegbert, N. Yesildag, M. Frings, F. Schmidt, S. Elgeti, H. Sauerland, M. Behr, C. Windeck, C. Hopmann, Y. Queudeville, U. Vroomen, and A. Bührig-Polaczek, Individualized Production in Die-Based Manufacturing Processes Using Numerical Optimization, International Journal of Advanced Manufacturing Technology, 80:851-858, 2015.
    ACME S. Elgeti and H. Sauerland, Deforming Fluid Domains Within the Finite Element Method: Five Mesh-Based Tracking Methods in Comparison , Archives of Computational Methods in Engineering, 1–39, 2015. [arXiv]
    Kunststoffe P. Knechtges, M. Behr and S. Elgeti, Fully-Implicit Log-Conformation Formulation of Constitutive Laws, Journal of Non-Newtonian Fluid Mechanics, 214 78–87, 2014. [arXiv].
    Kunststoffe L. Pauli, M. Behr and S. Elgeti, Towards Shape Optimization of Profile Extrusion Dies with Respect to Homogeneous Die Swell, Journal of Non-Newtonian Fluid Mechanics, 200:79-87, 2013.
    JCP S. Elgeti, M. Probst, C. Windeck, M. Behr, W. Michaeli and Ch. Hopmann, Numerical Shape Optimization as an Approach to Extrusion Die Design, Finite Elements in Analysis & Design, 48:35-43, 2012.
    JCP S. Elgeti, H. Sauerland, L. Pauli and M. Behr, On the Usage of NURBS as Interface Representation in Free-Surface Flows, International Journal for Numerical Methods in Fluids, 69:73-87, 2012.
    JCP W. Michaeli, C. Windeck, M. Behr, S. Elgeti, M. Probst and M. Nicolai, Automatische Optimierung in der Profilextrusion, atp edition, 3:54-61, 2011.
    Kunststoffe W. Michaeli, M. Behr, S. Elgeti, M. Probst, M. Nicolai, B. Fink and C. Windeck, Die Design: Automatically Optimizing Profile Dies, Kunststoffe, 7:28-30, 2009.
    Kunststoffe S. Elgeti, M. Probst, M. Nicolai, C. Windeck, B. Fink, M. Behr and W. Michaeli, Towards Shape Optimization of Extrusion Dies Using Finite Elements, Journal of Plastics Technology, 6:411–427, 2009.

    Book Chapters

    Kunststoffe G. Schuh, M. Behr, C. Brecher, A. Bührig-Polaczek, W. Michaeli, R. Schmitt, J. Arnoscht, A. Bohl, D. Buchbinder, J. Bültmann, A. Diatlov, S. Elgeti, W. Herfs, C. Hinke, A. Karlberger, D. Kupke, M. Lenders, C. Nußbaum, M. Probst, Y. Queudeville, J. Quick, H. Schleifenbaum, M. Vorspel-Rüter and C. Windeck, Integrative Production Technology for High-Wage Countries: Individualised Production, Editor: C. Brecher, 77-241, Springer, 2012.

    Conference Proceedings

    JCP F. Zwicke, P. Knechtges, M. Behr and S. Elgeti, Efficient Jacobian calculation in a finite element software using automatic differentiation, Conference Proceedings of the YIC GACM 2015, Publication Server of RWTH Aachen University, Hrsg.: S. Elgeti und J.-W. Simon, urn: urn:nbn:de:hbz:82-rwth-2015-039806, 2015.
    JCP R. Siegbert, J. Kitschke, H. Djelassi, M. Behr and S. Elgeti, Comparing Optimization Algorithms for Shape Optimization of Extrusion Dies, Proceedings in Applied Mathematics and Mechanics (PAMM), 14, p. 789-794, DOI:10.1002/pamm.201410377, 2014.
    JCP Ch. Hopmann, M. Behr, R. Siegbert, S. Elgeti, M. Behr, K. Kurth and C. Windeck, Improving the Automated Optimization of Profile Extrusion Dies By Applying Appropriate Optimization Areas and Strategies, AIP Conference Proceedings, 1593, p. 587-591, DOI:10.1063/1.4873849, 2014.
    JCP Ch. Hopmann, M. Behr, R. Siegbert, S. Elgeti, K. Kurth and C. Windeck, Improving the Automated Optimization of Profile Extrusion Dies By Applying Appropriate Optimization Areas and Strategies, Proceedings of the Polymer Processing Society 29th Annual Meeting, PPS-29, DOI:10.1063/1.4873849, 2013.
    JCP R. Siegbert, S. Elgeti, M. Behr, K. Kurth, C. Windeck and Ch. Hopmann, Design Criteria in the Numerical Design of Profile Extrusion Dies, Key Engineering Materials (KEM) Journal, Trans Tech Publications (TTP), p. 794-800, doi:10.4028/www.scientific.net/KEM.554-557.794, 2013.
    JCP S. Elgeti, M. Probst, M. Nicolai, L. Pauli, M. Behr and Ch. Hopmann, Design Objectives in Shape Optimization of Profile Extrusion Dies, Conference Proceedings of the First ECCOMAS Young Investigators Conference, YIC, 2012.

    Ph.D. Thesis

    Kunststoffe S. Elgeti, Free-Surface Flows in Shape Optimization of Extrusion Dies, Dr. Hut Verlag (26. August 2011). (PDF)

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