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

Conference contribution


Publication Details

Author(s): Weidauer T, Willner K
Publication year: 2018
Language: English


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 Authors / FAU Editors

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


Research Fields

Structural dynamics
Lehrstuhl für Technische Mechanik


How to cite

APA:
Weidauer, T., & Willner, K. (2018). Numerical and experimental modal analysis of structures under gyroscopic influence in ALE formulation. In Proceedings of the ISMA2018. 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.

BibTeX: 

Last updated on 2019-23-06 at 07:09