Research Projects

Dynamik rotierender Maschinen

  • Experimental and numerical investigation of the vibration behavior of coupled blades
    In the project funded by AG Turbo, the friction damping of turbine blades with nonlinear shroud coupling for a variable operating mode is being investigated. For this purpose, the blading is excited at different speeds and different excitation force levels. Contact properties are varied by varying the oversize of the shrouds and their influence on the damping for several operating points is investigated experimentally and numerically.
    Led by: Lars Panning-von Scheidt
    Team: Florian Jäger
    Year: 2022
    Funding: AG Turbo
    Duration: 01.09.2022-28.02.2026
  • Nonlinear aeroelasticity and transient multiresonances
    The calculation tool RAMBO was developed as a result of various studies in the Collaborative Research Center "Regeneration of Complex Capital Goods". It can be applied to calculate the vibrations of linear, mistuned turbine stages, taking into account, for example, aerodynamic damping. In this transfer project, the application of the tool will be tested on a real structure. It will be compared with nonlinear calculations.
    Led by: Lars Panning-von Scheidt
    Team: Anna Lefken (Dynamics of Rotating maschinery)
    Year: 2023
    Funding: DFG
    Duration: 01.01.2023-31.12.2026
  • Model-based Vibrational Analysis
    The regular maintenance and overhaul of jet engines is a crucial part to keep the aircraft safe and efficient. During this inspection process it may happen that large vibrational amplitudes occur and the causes for the oscillations have to be found quickly and reliably. A simulation environment is being developed at the IDS to help with the diagnostic.
    Led by: Lars Panning-von Scheidt
    Team: Martin Paehr (Dynamics of Rotating Maschinery)
    Year: 2023
    Duration: 01.07.2023-31.12.2025
  • Blade vibration under consideration of variable excitations and geometric mistuning
    This project investigates the numerical prediction of blade vibration with different mistuning effects and nonlinearities. In addition to the frequency mistuning in a bladed disk, variable excitation and mistuned blade geometries are also taken into account. If the considered mistuning phenomena are combined with other effects such as speed variability and nonlinear couplings, not only those effects themselves but also their interactions can be analysed.
    Led by: Lars Panning-von Scheidt
    Team: Yue Xiao (Dynamik rotierender Maschinen)
    Year: 2023
    Funding: BMWK/AiF
    Duration: 01.08.2021-31.03.2023
  • Robust damper design for multiharmonic excitation under flexible operations
    As part of this joint research project funded by AG Turbo, the robustness of underplatform dampers for turbine blades is being investigated with regard to an increasingly broadband frequency spectrum of vibration excitation, e.g. as a result of partial load operation. Design rules for optimized and particularly robust friction dampers are to be developed by enhancing an existing simulation tool with regard to multiharmonic excitations and validating it by means of a realistic experiment under rotation.
    Led by: Lars Panning-von Scheidt
    Team: Katharina Brinkmann
    Year: 2024
    Funding: AG Turbo
    Duration: 01.10.2023-28.02.2027