Identification of natural frequencies of machine tools during milling: comparison of the experimental modal analysis and the operational modal analysis
Jan Berthold,
Martin Kolouch,
Joachim Regel
et al.
Abstract:Modal parameters (natural frequencies, mode shapes and modal damping) help to understand the dynamic behaviour of complex systems like machine tools. There are several approaches for finding the modal parameters. The Experimental Modal Analysis (EMA) has proven to be effective at standstill of a machine tool. The excitation, realized with impulse hammer or shaker, and excited responses at several locations are measured. Alternatively, the Operational Modal Analysis (OMA) can be deployed for finding the modal p… Show more
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