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Comparison of experimental modal analysis with operational modal analysis for assessment of the dynamic behaviour of a machine tool component

Presentation held at Intenational Conference on High Speed Machining, HSM 2016, 5th October 2016, Metz
Vergleich der experimentellen Modalanalyse mit der Betriebsmodalanalyse für die Bewertung des dynamischen Verhaltens von Werkzeugmaschinen
: Berthold, Jan; Kolouch, Martin; Wittstock, Volker; Putz, Matthias

Präsentation urn:nbn:de:0011-n-4816672 (16 MByte PDF)
MD5 Fingerprint: 7f31b5804051b75aa8f67f3cc9dd11cb
Erstellt am: 31.1.2018

2016, 29 Folien
International Conference on High Speed Machining (HSM) <13, 2016, Metz>
Vortrag, Elektronische Publikation
Fraunhofer IWU ()
machine tool; dynamic; operational modal analysis

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.