ABSTRACT
Vibration is what one feels upon putting one's hand on the hood of a car with the engine running, or on the base of a running motor. The manufacture of vibration isolators and shock mounts is much simpler than their design and formulation. Mainly it involves molding by compression, transfer, or injecting, depending on the design and the volume of production. A vast majority of these devices are metal-to-rubber bonded products. Some are partly bonded and partly assembled, and some are simple assemblies. Rubber mounts are not normally effective for very low frequency applications because of the impractically high frequency ratio. Vibration is a magnitude that oscillates about a mean reference. The maximum displacement from the mean is called the "amplitude" of the vibration. The vibration of a given exciting frequency is isolated by introducing an isolation device having a substantially lower natural frequency.
