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Examples of use: — As a c ompression-loaded support element for vibration isolation in construction, rail and equipment applications — Mass-spring systems, under ballast mats, under sleeper pads, rail pads, baseplate pads — Load bearings for architectural applications, optional full surface, strips and discrete bearings — Foot fall bearings
In the non-work environment, vibration may be responsible for: degradation of the quality of sound in audio equipment; decreased appliance life; destruction of delicate electronics; and damaged optical elements. When addressing vibration exposure, you need help choosing a urethane vibration isolation material.
Examples are machinery mounts and feet, pads, and bumpers. Polyurethane’s viscoelastic nature is key to its passive damping action. Each cycle of vibration causes strain and friction within the polyurethane. This converts mechanical energy into thermal energy (see hysteresis ).
Isolation is the prevention of vibrations from entering Damping is the absorption of the vibration energy that is entering system and dissipating it by changing the kinetic energy of into a different form of energy. The two forms of vibration ment are different from each other, but often are used in conjunction to achieve the desired performance.
How Does A Urethane Vibration Isolator Work? Urethane isolators work to limit harmful vibration. They do this by isolating the vibration source (as their name implies), decreasing the amplitude (strength) of the vibration, and eliminating harmful frequencies of vibration.
Application examples: — As pr essurised spring for vibration isolation in construction/rail sectors and for machinery — Mas s-spring systems, under ballast mats, sleeper pads, rail pads and baseplate pads — F ull-surface, strip and point bearings for buildings — Imp act noise insulation — Bearings for stairs and landings
Planning measures for vibration isolation. 1. Calculation of the characteristic compression (without partial load factors) under the machine foundation from the dead weight of the foundation block and the dead weight of the machine. 2. Selection of the suitable isolator type taking the maximum static permanent load into account.
