1. On the influence of boundary conditions on the modal properties of a base frame.
- Author
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Renning, Maik, Kracht, Kerstin, von Wagner, Utz, Köster, Philipp, and Bozkurt, Taner
- Subjects
TURBOMACHINES ,BOUNDARY value problems ,TURBOMACHINE blades ,SCREWS ,FINITE element method - Abstract
Supports of turbomachineries can be designed as base frames, which are constructions of steel-plates. One of the most important design requirements of the turbomachinery system is to avoid of natural frequencies in the operating speed range. Thus, a rotor dynamics analysis (see e.g. [1]), which is usually carried out using transfer matrix methods or finite element methods has to take the dynamic stiffness of the base frame into account. However, there are several problems to identify this complex and frequency dependent parameter, for example the localization of excitation or measurement responses and the difficulty of the support of base frames, e.g jack screws. In this article the support of a test base frames is analyzed by modal analysis experimentally. (© 2014 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim) [ABSTRACT FROM AUTHOR]
- Published
- 2014
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