Test Facility for Multidirectional Sound Transfer Through Resilient Elements under Static Load

摘要

A test facility and method for characterizing sound transfer properties are described. A resilient mounting is clamped between two blocks which vibrate as rigid bodies in the frequency range of interest. The upper block is on the machine side of the mounting and serves as an excitation block. The lower block determines the force which would be exerted by the mounting on a high impedance seating, i.e., the blocked force. By a proper combination of excitation block and exciter configuration one of the six excitation components is made very strong, whereas the others are suppressed. The blocked forces and couples are derived from accelerations of the terminating block.