| 摘要 |
A noise and vibration damper for use with a rotatable structure, such as a driveshaft assembly for a vehicular drive train system, includes an inner member, an elastomeric member that extends about the inner member, and an outer member that extends about the elastomeric member. The inner member is formed from a sheet of material that has been deformed to a desired shape, while the outer member is formed from a tube of material having a length that is selected to provide the desired dampening frequency. The natural resonant frequency of the noise and vibration damper can be adjusted by varying either or both of the shape of the inner member or the axial length of the outer member of the noise and vibration damper. In both instances, the weight distribution of the components of the noise and vibration damper is altered. As a result, the rotational inertia (and, therefore, the natural resonant frequency) of the noise and vibration damper can be altered to absorb the undesirable noise and vibration applied to the drive train system and to minimize the amount of such noise and vibration that is transmitted and amplified by the drive train system. |
