Shock and Vibration Mounting System for Machinery and Electronics

Shock mitigation and vibration isolation of electronics, machinery and other selected components are critical in the design and safe operation of Naval surface combatants. Based on the different forcing functions and constraints that characterize 1. shock loading, and 2. vibration isolation of potentially noisy equipment, two classes of mounts have evolved. Neither class performs satisfactorily for both types of inputs. We are proposing herein to develop a new family of low cost passive combined mounts that perform well for both. Under normal operating conditions, the mount will exhibit characteristics of a vibration isolation mount. It will be relatively soft (five Hz. resonance) and will attenuate equipment vibrational forces transmitted through it over a broad range of frequencies. Under shock loading, the isolation aspect of the mount will be snubbed and the mounts will become highly dissipative, relatively stiff and will allow displacements of up to a few inches to absorb shock loads. Applied Physical Sciences Corp with support from Anteon's ETC Division and Enidine proposes to: develop a number of concepts; perform basic analysis on them; build test samples of the most promising; and perform limited shock and isolation transmissibility tests on them.