| Popis: |
Damping is the most important factor in vibration isolation due to dissipating mechanical energy into heat, energy absorption under impact, imposing finite amplitude bound amplitudes at resonant frequencies, and mitigating vibration amplitudes in the vicinity of those frequencies while increasing the amplitudes in other frequency domains. Thus, many kinds of available elastomers of high damping ratio are in common use as anti‐vibration materials. The choice of polymer depends on the specification (loads and environmental conditions) and the isolation purpose. Most of these commercial materials properties were tested and defined by specific viscoelastic models. Also, their properties depend on frequency, temperature, and time that can be measured following test regulations. This dependence leads to the dynamic response functions of single or multi‐degree of freedom systems (SDF or MDF systems) that differ in shape from those of systems with independent (constant) parameters. A solution is developed here to... |
