Vibration and Shock Isolation |
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acoustical impedance amplitude axis becomes board foot calculated center of gravity Chapter chassis components compression coordinate coupled natural frequencies cycle damping ratio decoupled decreases determined dimensionless direction durometer element energy engine equal equation of motion force applied force F force transmitted force-deflection curve forcing frequency frequency ratio function given by equation horizontal illustrated in Figure impulse inch increases indicated inertia forces lb/in linear isolator load loom machine magnitude maximum acceleration experienced maximum deflection maximum displacement modes of vibration moment of inertia mounted body mounted equipment my/ms numerical operation plane principal elastic axes punch press radius of gyration relatively resonance respect result rotation Section shear shock isolators shown in Figure single-degree-of-freedom system snubber static deflection Substituting thickness tion transmissibility undamped unsprung weight velocity change velocity shock vertical natural frequency vibration and shock vibration isolation viscous damping weight