Multibody Systems

The focus group “Multibody Systems” consists of Hans Fischer Senior Fellow Prof. Michel Géradin (Emeritus Professor, University of Liège, Belgium), Hans Fischer Fellow Dr. Karin Nachbagauer (University of Applied Sciences Upper Austria),  their host Prof. Daniel Rixen (TUM Department of Mechanical Engineering) and Dr. techn. Andreas Zwölfer (TUM Department of Mechanical Engineering). The activities of this Focus Group are centered on the interplay between modeling, simulation, and optimization of nonlinear dynamic systems, with special focus on flexible multibody systems. On the one hand, we will develop new formulations for the modeling of rigid and flexible multibody systems that take floating frames of reference into account. On the other hand, new approaches for the intelligent optimal control of multibody systems for future digital twin technologies will be investigated. Such efficient numerical methods for design and simulation of multibody systems such as robots, for example, represent an important challenge in the engineering dynamics community and are at the center of our scientific collaboration.

Prof. Géradin holds a TUM-IAS Hans Fischer Senior Fellowship awarded by Siemens AG.
Prof. Nachbagauer holds a TUM-IAS Hans Fischer Fellowship awarded by Siemens AG.


TUM-IAS funded doctoral candidate:

Daniel Lichtenecker, Chair of Applied Mechanics, TUM Department of Mechanical Engineering

TUM-IAS funded postdoctoral researcher:

Dr. Valentin Sonneville, Chair of Applied Mechanics  

Selected Publications by the Focus Group


  • Eichmeir, Philipp; Nachbagauer, Karin; Lauß, Thomas; Sherif, Karim; Steiner, Wolfgang: Time-Optimal Control of Dynamic Systems Regarding Final Constraints. Journal of Computational and Nonlinear Dynamics 16 (3), 2021 mehr…
  • Géradin, Michel: Dynamics of a flexible body: a two-field formulation. Multibody System Dynamics, 2021 mehr…
  • Géradin, Michel; Rixen, Daniel J.: A fresh look at the dynamics of a flexible body application to substructuring for flexible multibody dynamics. International Journal for Numerical Methods in Engineering 122 (14), 2021, 3525-3582 mehr…


  • Eichmeir, Philipp; Lauß, Thomas; Oberpeilsteiner, Stefan; Nachbagauer, Karin; Steiner, Wolfgang: The Adjoint Method for Time-Optimal Control Problems. Journal of Computational and Nonlinear Dynamics 16 (2), 2020 mehr…