Generator borne vibrations that are transmitted to the surrounding areas can influence the functionality of nearby equipment, impact product quality, and machinery life cycle costs. These vibrations can affect the overall work environment of the adjacent areas and should they become structure borne cause damage to the building or structure in which they are located.
Getzner’s range of Sylomer® and Sylodyn® are specially designed to reduce vibration and structure borne noise for machinery applications. The wide static load capacity range (1.60 psi – 435.11 psi), thicknesses, and dimensions allow for Sylomer® and Sylodyn® solutions to be easily customized to the needs of your specific generator for optimal isolation. Sylomer®, Sylomer® HD, and Sylodyn® materials have properties that are very similar to that of a mechanical spring.
Sylodyn® is the material most like a mechanical spring as it has very little damping and can achieve natural frequencies as low as 4 – 5 Hz. Sylomer® HD is a pure damper with little to no spring and a mechanical loss factor of 0.55 – 0.60. Standard Sylomer® is a combination of both spring and damping. Since Generators require some internal damping during the startup and shutdown phases standard Sylomer® is the right material for generator applications.
With special footing designs Getzner engineers are able to eliminate the loss of performance that is typical for prestressed solutions. The footing design would be based on the fact that prestress forces do not have any inertia and therefore in turn do not contribute to vibration insulation. By optimizing the build up it is possible to reach frequencies below 7 Hz with a bearing thickness of around 3”. This results in highly efficient solutions that show a –91.6 % or 21.5 dB reduction value at the rotation frequency of a motor such as a 2100 kVA Sterling Wilson diesel generator.