Sound Transfer Via Resilient Mounts from Separate Excitation with Orthogonal Translations and Rotations: Development and Test of a Measurement Technique

摘要

The measurement of the sound transmission properties of resilient mounts for machinery in ships is considered. A measurement method is presented which determines five transfer functions related to the compressive, transverse, torsional and bending stiffness of a mount. The method of measurement is part of a procedure which enables an accurate analysis of those factors which limit the effectiveness of a resilient mounting system with respect to the reduction of noise radiation into the water. Special attention is given to the separation of excitation by transverse accelerations and that by a rotation on a horizontal axis.