Numerical and experimental modal analysis of structures under gyroscopic influence in ALE formulation

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Details zur Publikation

Autor(en): Weidauer T, Willner K
Jahr der Veröffentlichung: 2018
Sprache: Englisch


Abstract

A test set-up for the modal analysis of gyroscopic, rotationally symmetric systems is presented. It employs laser Doppler vibrometry along with automatic impulse excitation installed on a rotary table and is applied to a glass structure rotating about its figure axis. The effects of gyroscopic influences on the modal behaviour such as the split of eigenfrequencies and the treatment of complex eigenmodes as travelling waves are deduced analytically and shown experimentally. Finally numerical computations using the Arbitrary-Lagrangian-Eulerian (ALE) finite element formulation separating the rigid body rotation from the mesh deformation are conducted. With the combination of analytical, experimental and numerical analysis a broad overview of modal characteristics of gyroscopic systems is given.


FAU-Autoren / FAU-Herausgeber

Weidauer, Tim
Professur für Strukturmechanik
Willner, Kai Prof. Dr.-Ing.
Professur für Strukturmechanik


Zitierweisen

APA:
Weidauer, T., & Willner, K. (2018). Numerical and experimental modal analysis of structures under gyroscopic influence in ALE formulation. Leuven, Belgien, BE.

MLA:
Weidauer, Tim, and Kai Willner. "Numerical and experimental modal analysis of structures under gyroscopic influence in ALE formulation." Proceedings of the ISMA2018, Leuven, Belgien 2018.

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Zuletzt aktualisiert 2018-19-07 um 10:08