Dynamik rotierender Maschinen

• 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: 2025

  Funding: AG Turbo

  Duration: 10/2023-02/2027
• 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: Yue Xiao

  Year: 2025

  Funding: AG Turbo

  Duration: 09/2022-04/2027
• 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

  Year: 2025

  Funding: DFG

  Duration: 01/2023-12/2026