STRUCTURE-BORNE SOUND POWER AND SOURCE CHARACTERIZATION IN MULTI-POINT-CONNECTED SYSTEMS, PART 2: ABOUT MOBILITY FUNCTIONS AND FREE VELOCITIES

Abstract As an aid to the control of structure-borne sound the characterization of a machine as a structure-borne sound source would constitute a useful design tool. Towards this goal, a formulation based upon a machine's ability to deliver power has been proposed by Mondot and Petersson [1]. To progress their proposal, this paper examines in an ordered manner those physical parameters which determine the vibrational power in a system involving multiple connections. The structural characteristics of typical machine and floor mount conditions are considered by examination of mobility relationships whilst the machine excitation (or source activity) characteristics are considered via free velocity relationships.