"Duality applied to Experimental Modal Analysis"
: Proceedings of Bath Workshop on Power Transmission and Motion Control PTMC 2004, Bath, England, UK, Seite(n) 111-122, 9-2004
Duality applied to Experimental Modal Analysis
Sprache des Titels:
Proceedings of Bath Workshop on Power Transmission and Motion Control PTMC 2004, Bath, England, UK
Experimental modal analysis is a well-established method to determine the natural frequencies and mode shapes of structures. It is based on the measurement of frequency response functions between force input and motion response. If a hydraulic system can be transformed into a dual mechanical structure, the frequency response functions between flow rate input and pressure response may be used for experimental modal analysis. In the application example presented, a hydraulic transmission line system is excited by a servovalve, and local pressures are measured along the lines. The pressure mode shapes of the
hydraulic system are identified by a structural dynamics software package