Abstract: A torsional vibration damper having a hub carrying a radially projecting flange and an annular inertia mass defining an annular channel encompassing the radially projecting flange and an elastomeric member. An annular compression ring is attached to the opening of the annular channel to axially compress and extrude the elastomeric member to fill the annular channel around the radial flange within the inertia ring. Projections defining an intermittent annular inner rim of the inertia mass extend through openings between the spokes of the hub and cooperate with an annular outer rim of the inertia mass to retain the compression ring.

Abstract: The invention includes systems and methods for designing a vibration control device. Included is a design suite having two or more of a Holzer analysis module, a sine-lock design module, a standard torsional damper design module, a common vertex torsional damper design module, a linear damper design module, a torsional isolator design module, an inertia calculator, a rubber database, a rubber distortion calculator, a mold design module, a joint analysis calculator, a compression set calculator, a assembly fixture module, and a mass scaling calculator consolidated on a single computer platform. Particular embodiments include the Holzer analysis module with one or more of the sine-lock design module, the standard torsional damper design module, the common vertex torsional damper design module, the linear damper design module, and the torsional isolator design module consolidated on the single computer platform.