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2016
Presentation
Titel
Comparison of experimental modal analysis with operational modal analysis for assessment of the dynamic behaviour of a machine tool component
Titel Supplements
Presentation held at Intenational Conference on High Speed Machining, HSM 2016, 5th October 2016, Metz
Alternative
Vergleich der experimentellen Modalanalyse mit der Betriebsmodalanalyse für die Bewertung des dynamischen Verhaltens von Werkzeugmaschinen
Abstract
Operational modal analysis (OMA) makes possible a characterisation of the dynamic behaviour during operation unlike the experimental modal analysis (EMA), known as standard, which can only be employed in standstill and thus neglects effects occurring during operation. Nevertheless, OMA requires excitation that has features of a white noise signal, which is difficult to fulfil in the case of machine tools. In this paper, effects of various excitation signals on the results evaluated with various methods of OMA are investigated on a joint of a parallel kinematic machine tool and compared with EMA.