Dieses Bild zeigt Johannes Rettberg

Johannes Rettberg

Herr M. Sc.

Institut für Technische und Numerische Mechanik (ITM)

Kontakt

+49 711 685 66396
 +49 711 685 66400

Pfaffenwaldring 9
70569 Stuttgart
Deutschland
Raum: 4.155

Fachgebiet

  1. 2024

    1. J. Rettberg, D. Wittwar, P. Buchfink, R. Herkert, J. Fehr, and B. Haasdonk, “Improved a posteriori error bounds for reduced port-Hamiltonian systems,” Advances in Computational Mathematics, vol. 50, Art. no. 5, Sep. 2024, doi: 10.1007/s10444-024-10195-8.
    2. J. Rettberg, J. Kneifl, J. Herb, P. Buchfink, J. Fehr, and B. Haasdonk, “Data-driven identification of latent port-Hamiltonian systems.” 2024. doi: 10.48550/arXiv.2408.08185.
    3. R. Herkert, P. Buchfink, B. Haasdonk, J. Rettberg, and J. Fehr, “Error Analysis of Randomized Symplectic Model Order Reduction for Hamiltonian systems.” 2024. doi: 10.48550/arXiv.2405.10465.
    4. R. Herkert, P. Buchfink, B. Haasdonk, J. Rettberg, and J. Fehr, “Randomized Symplectic Model Order Reduction for Hamiltonian Systems,” in Large-Scale Scientific Computations, I. Lirkov and S. Margenov, Eds., Cham: Springer Nature Switzerland, 2024, pp. 99–107. doi: 10.1007/978-3-031-56208-2_9.

  2. 2023

    1. J. Rettberg et al., “Port-Hamiltonian fluid–structure interaction modelling and structure-preserving model order reduction of a classical guitar,” Mathematical and Computer Modelling of Dynamical Systems, vol. 29, Art. no. 1, 2023, doi: 10.1080/13873954.2023.2173238.
    2. J. Rettberg, D. Wittwar, P. Buchfink, R. Herkert, J. Fehr, and B. Haasdonk, “Improved a posteriori Error Bounds for Reduced port-Hamiltonian Systems.” 2023. doi: https://doi.org/10.48550/arXiv.2303.17329.
    3. R. R. Herkert, P. Buchfink, B. Haasdonk, J. Rettberg, and J. C. Fehr, “Randomized Symplectic Model Order Reduction for Hamiltonian Systems,” pp. 1–8, 2023, doi: 10.48550/arXiv.2303.04036.

  3. 2022

    1. J. Rettberg et al., “Port-Hamiltonian Fluid-Structure Interaction Modeling and Structure-Preserving Model Order Reduction of a Classical Guitar,” pp. 1–27, 2022, doi: 10.48550/arXiv.2203.10061.
  • 10. September 2024: Model Reduction and Surrogate Modeling (MORE) Conference, San Diego,
    "Data-driven identification of reduced port-Hamiltonian systems"
  • 15. Juli 2024: ITM Statusseminar, Monbachtal (Bad Liebenzell), "Optimization-based identification of port-Hamiltonian systems"
  • 04. März 2024: Young Mathemations in Model Order Reduction Conference 2024 (YMMOR), Stuttgart: "Structure-preserving model order reduction and error analysis of port-Hamiltonian systems"
  • 29. September 2023: GMA-Fachausschuss 2.13, Anif,
    "Low-dimensional identification of port-Hamiltonian systems by means of deep learning and model reduction."
  • 18. Juli 2023: ITM Statusseminar, Kloster Schmerlenbach, Hösbach, "A Story About Model Order Reduction, Error Estimation & port-Hamiltonian systems"
  • 05. Juni 2023: ECCOMAS Coupled 2023, Kreta, Griechenland,
    "Low-Dimensional Discovery of Port-Hamiltonian Systems by Combining Model Order Reduction and Machine Learning."
  • 27. Juli 2022: ITM Statusseminar, Kloster Schmerlenbach, Hösbach; "The journey continuous… Crest of the PH ALP"
  • 30. September 2021: DMV-ÖMG Jahrestagung 2021, Passau (Online),
    "Sensitivity Analysis of Structure-Preserving Model Order Reduction Methods for a Fluid-Structure Interaction Guitar Model in port-Hamiltonian Formulation."
  • 25. November 2021: ITM Statusseminar, Monbachtal (Bad Liebenzell), "The journey of a classical guitar to Port Hamiltonian"
  • 22. September 2021: GMA-Fachausschuss 1.30, Anif,
    "Modeling and Structure-Preserving Model Order Reduction of a Classical Guitar in port-Hamiltonian Representation."
  • 16. Juni 2021: ECCOMAS Coupled 2021, Sardinia (Online),
    "Structure-Preserving Model Order Reduction for a port-Hamiltonian-based Fluid-Structure Interaction Model of a Classical Guitar."
  • 05. Oktober 2023: International Conference on Data-Integrated Simulation Science (SimTech2023), Stuttgart; "Low-Dimensional Discovery of Port-Hamiltonian Systems Combining Model Order Reduction and Machine Learning"
  • 21. September 2022: Model Reduction and Surrogate Modeling (MORE) Conference, Technische Universität Berlin; "Effective A-posteriori Error Estimation for Port-Hamiltonian Systems"
  • Entwicklung und Implementierung einer multi-physikalischen Co-Simulationsumgebung mit Modellordnungsreduktion am Beispiel einer thermoelastischen Scheibenbremse, Forschungsarbeit. Institut für Technische und Numerische Mechanik, Universität Stuttgart, 2023.
    Betreuung gemeinsam mit Lennart Frie, M.Sc.
  • Implementierung der Methode des mitbewegten Referenzsystems in port-Hamiltonscher Darstellung, Masterarbeit.
    Universität Stuttgart, Institut für Technische und Numerische Mechanik, 2023.
    Betreuung gemeinsam mit Arnim Kargl, M.Sc.
  • Low-Dimensional Discovery of Port-Hamiltonian Systems by Combining Model Order Reduction and Machine Learning, Forschungsmodul SimTech.
    Universität Stuttgart, Institut für Technische und Numerische Mechanik, 2023.
    Betreuung gemeinsam mit Jonas Kneifl, M.Sc.
  • Modellreduktion einer thermomechanischen Scheibenbremse in port-Hamiltonscher Darstellung, Masterarbeit.
    Universität Stuttgart, Institut für Technische und Numerische Mechanik, 2021.
    Betreuung gemeinsam mit Fabian Matter, M.Sc.
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