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Browsing Fakultät für Maschinenbau by Author "b760142e-6a30-4091-b48f-2d29f3c595c3"

Now showing items 1-7 of 7

Aerodynamical and Structural Analysis of Operationally Used Turbine Blades

Schwerdt, Lukas; Hauptmann, Thomas; Kunin, Artsem; Seume, Jörg R.; Wallaschek, Jörg; Wriggers, Peter; Panning-von Scheidt, Lars; Löhnert, Stefan (Amsterdam : Elsevier BV, 2017)

This paper presents an integrated methodology for the analysis of operationally-used turbine blades, incorporating aerodynamic and multiple structural simulations. In jet engines, blade rubbing and erosion lead to deviations ...
Analysis of an experimental setup for structural damping identification

Hentschel, Olaf Peter; Bonhage, Marius; Panning-von Scheidt, Lars; Wallaschek, Jörg; Denk, Markus; Masserey, Pierre-Alain (Warsaw : Polish Society of Theoretical and Allied Mechanics, 2016)

In the present paper, an experimental setup for structural damping determination arising from energy dissipations within the material is presented. The experimental setup is developed in such a way that all unintended ...
High order sensitivity analysis of a mistuned blisk including intentional mistuning

Pohle, Linus; Tatzko, Sebastian; Panning-von Scheidt, Lars; Wallaschek, Jörg (Warsaw : Polish Society of Theoretical and Allied Mechanics, 2017)

Small deviations between turbine blades exist due to manufacturing tolerances or material inhomogeneities. This effect is called mistuning and usually causes increased vibration amplitudes and also a lower service life ...
An improved reduced order model for bladed disks including multistage aeroelastic and structural coupling

Schwerdt, Lukas; Maroldt, Niklas; Panning-von Scheidt, Lars; Wallaschek, Joerg; Seume, Joerg ([Zug] : GPPS, 2023)

To assess the influence of mistuning on the vibration amplitudes of turbo-machinery rotors, reduced order models (ROMs) are widely used. A variety of methods are available for single-stage configurations and mostly ...
Introduction and evaluation of a damping determination method based on the short-term fourier transform and resampling (stfr)

Hentschel, Olaf Peter; Panning-von Scheidt, Lars; Wallaschek, Jörg; Denk, Markus (Warszawa : Polish Soc. Theoretical & Applied Mechanics, 2015)

In the present paper, a frequency domain method for damping determination is presented. The described method is especially developed for low damped systems with well separated eigenfrequencies. Using the Short-Term Fourier ...
Modelling friction characteristics in turbine blade vibrations using a fourier series expansion of a real friction hysteresis

Hoffmann, Thomas; Panning-von Scheidt, Lars; Wallaschek, Jörg (London : Elsevier Ltd., 2017)

A new contact model is proposed to simulate the forced response of a two degree of freedom mechanical model which resembles the simplest form of a friction damped turbine blade. The model scales a measured friction hysteresis ...
Transient Resonance Passage of a Mistuned Bladed Disk with and without Underplatform Dampers

Brinkmann, Katharina; Hoffmann, Thomas; Panning-von Scheidt, Lars; Stüer, Heinrich (Basel : MDPI, 2023)

In this work, the vibration response of an academic free-standing turbine blisk is analyzed in regard to transient resonance passages. Measurement data are recorded using strain gauges and tip timing to evaluate the blades ...

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Browsing Fakultät für Maschinenbau by Author "b760142e-6a30-4091-b48f-2d29f3c595c3"

Browsing Fakultät für Maschinenbau by Author "b760142e-6a30-4091-b48f-2d29f3c595c3"

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