This image shows Johannes Rettberg

Johannes Rettberg

M. Sc.

Institute of Engineering and Computational Mechanics (ITM)

Contact

+49 711 685 66396
 +49 711 685 66400

Pfaffenwaldring 9
70569 Stuttgart
Deutschland
Room: 4.155

Subject

  1. 2024

    1. Rettberg, J., Wittwar, D., Buchfink, P., Herkert, R., Fehr, J., & Haasdonk, B. (2024). Improved a posteriori error bounds for reduced port-Hamiltonian systems. Advances in Computational Mathematics, 50, Article 5. https://doi.org/10.1007/s10444-024-10195-8
    2. Rettberg, J., Kneifl, J., Herb, J., Buchfink, P., Fehr, J., & Haasdonk, B. (2024). Data-driven identification of latent port-Hamiltonian systems. https://doi.org/10.48550/arXiv.2408.08185
    3. Herkert, R., Buchfink, P., Haasdonk, B., Rettberg, J., & Fehr, J. (2024). Error Analysis of Randomized Symplectic Model Order Reduction for Hamiltonian systems. https://doi.org/10.48550/arXiv.2405.10465
    4. Herkert, R., Buchfink, P., Haasdonk, B., Rettberg, J., & Fehr, J. (2024). Randomized Symplectic Model Order Reduction for Hamiltonian Systems. In I. Lirkov & S. Margenov (Eds.), Large-Scale Scientific Computations (pp. 99–107). Springer Nature Switzerland. https://doi.org/10.1007/978-3-031-56208-2_9

  2. 2023

    1. Rettberg, J., Wittwar, D., Buchfink, P., Brauchler, A., Ziegler, P., Fehr, J. C., & Haasdonk, B. (2023). Port-Hamiltonian fluid–structure interaction modelling and structure-preserving model order reduction of a classical guitar. Mathematical and Computer Modelling of Dynamical Systems, 29, Article 1. https://doi.org/10.1080/13873954.2023.2173238
    2. Rettberg, J., Wittwar, D., Buchfink, P., Herkert, R., Fehr, J., & Haasdonk, B. (2023). Improved a posteriori Error Bounds for Reduced port-Hamiltonian Systems. https://doi.org/10.48550/arXiv.2303.17329
    3. Herkert, R. R., Buchfink, P., Haasdonk, B., Rettberg, J., & Fehr, J. C. (2023). Randomized Symplectic Model Order Reduction for Hamiltonian Systems. 1–8. https://doi.org/10.48550/arXiv.2303.04036

  3. 2022

    1. Rettberg, J., Wittwar, D., Buchfink, P., Brauchler, A., Ziegler, P., Fehr, J. C., & Hassdonk, B. (2022). Port-Hamiltonian Fluid-Structure Interaction Modeling and Structure-Preserving Model Order Reduction of a Classical Guitar. 1–27. https://doi.org/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. July 2024: ITM Statusseminar, Monbachtal (Bad Liebenzell), "Optimization-based identification of port-Hamiltonian systems"
  • 04. March 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 Technical Commitee 2.13, Anif,
    "Low-dimensional identification of port-Hamiltonian systems by means of deep learning and model reduction."
  • 18. July 2023: ITM Statusseminar, Kloster Schmerlenbach, Hösbach, "A Story About Model Order Reduction, Error Estimation & port-Hamiltonian systems"
  • 05. June 2023: ECCOMAS Coupled 2023, Crete, Greece,
    "Low-Dimensional Discovery of Port-Hamiltonian Systems by Combining Model Order Reduction and Machine Learning."
  • 27. July 2022: ITM Statusseminar, Kloster Schmerlenbach, Hösbach; "The journey continuous… Crest of the PH ALP"
  • 30. September 2021: DMV-ÖMG Annual Conference 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 Technical Commitee 1.30, Anif,
    "Modeling and Structure-Preserving Model Order Reduction of a Classical Guitar in port-Hamiltonian Representation."
  • 16. June 2021: ECCOMAS Coupled 2021, Sardinia (Online),
    "Structure-Preserving Model Order Reduction for a port-Hamiltonian-based Fluid-Structure Interaction Model of a Classical Guitar."

 

  • 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"
  • 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."
  • October 05, 2023: International Conference on Data-Integrated Simulation Science (SimTech2023), Stuttgart; "Low-Dimensional Discovery of Port-Hamiltonian Systems Combining Model Order Reduction and Machine Learning"
  • September 21, 2022: Model Reduction and Surrogate Modeling (MORE) Conference, Technical University Berlin; "Effective A-posteriori Error Estimation for Port-Hamiltonian Systems"
  • Development and implementation of a multi-physics co-simulation environment with model order reduction using the example of a thermoelastic disc brake, Forschungsarbeit. Institute of Engineering and Computational Mechanics, University of Stuttgart, 2023.
    In co-supervision with Lennart Frie, M.Sc.
  • Implementation of the floating frame of reference formulation in a port-Hamiltonian representation, Master thesis.
    University of Stuttgart, Institute of Engineering and Computational Mechanics, 2023.
    In co-supervision with Arnim Kargl, M.Sc.
  • Low-Dimensional Discovery of Port-Hamiltonian Systems by Combining Model Order Reduction and Machine Learning, Research module SimTech.
    University of Stuttgart, Institute of Engineering and Computational Mechanics, 2023.
    In co-supervision with Jonas Kneifl, M.Sc.
  • Model order reduction of a thermo-mechanical disc brake in a port-Hamiltonian representation, Master Thesis.
    University of Stuttgart, Institute of Engineering and Computational Mechanics, 2021.
    In co-supervision with Fabian Matter, M.Sc.
To the top of the page