Johannes Rettberg

black: published, green: accepted for publication, orange: submitted for publication

• Rettberg, J.; Wittwar, D.; Buchfink, P.; Herkert, R.; Fehr, J.; Haasdonk, B.: Improved a posteriori Error Bounds for Reduced port-Hamiltonian Systems. Advances in Computational Mathematics, 2023.

• Herkert, R.; Buchfink, P.; Haasdonk, B.; Rettberg, J.; Fehr, J.: Randomized Symplectic Model Order Reduction for Hamiltonian Systems. Large-Scale Scientific Computing Proceedings, 2023. Preprint ArXiv: https://doi.org/10.48550/arXiv.2303.04036
   
• Rettberg, J.; Wittwar, D.; Buchfink, P.; Brauchler, A.; Ziegler, P.; Fehr, J.; Haasdonk, B.: Port-Hamiltonian Fluid-Structure Interaction Modeling and Structure-Preserving Model Order Reduction of a Classical Guitar.
  Mathematical and Computer Modelling of Dynamical Systems, 2022.
  DOI: https://doi.org/10.1080/13873954.2023.2173238
  Preprint ArXiv: http://arxiv.org/abs/2203.10061

• Replication Data for: Port-Hamiltonian Fluid-Structure Interaction Modeling and Structure-Preserving Model Order Reduction of a Classical Guitar (DARUS: https://doi.org/10.18419/darus-3248)

• 29. September 2023: GMA Technical Commitee 2.13, Anif,
  "Low-dimensional identification of port-Hamiltonian systems by means of deep learning and model reduction."
• 05. June 2023: ECCOMAS Coupled 2023, Crete, Greece,
  "Low-Dimensional Discovery of Port-Hamiltonian Systems by Combining Model Order Reduction and Machine Learning."
• 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."
• 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."

• 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"

• 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. (running)
  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.

• Teaching Assistant of the lecture Flexible Multibody Systems (SS 2022)
• Teaching Assistant of the lecture Flexible Multibody Systems (SS 2023)
• Supervision of the Practical Training Robot Kinematics  (SS 2021)
• Supervision of the Practical Training Robot Kinematics  (WT 2020/21)
• Supervision of the Practical Training Robot Kinematics  (WT 2021/22)
• Supervision of the Practical Training Robot Kinematics  (WT 2022/23)
• Advisor of the tutor seminar in Applied Mechanics I (WT 2022/2023)