Patent ID: 9175718
Filing Date: 2015-11-03
Classification: B60K,B60Y,F16C,F16F,Y10T

Abstract:
1. A damped propshaft assembly comprising: a hollow shaft; and a tuned damper received in the hollow shaft and having a liner and a damping member, the liner having a mass and a stiffness that are tuned to attenuate one or more of a bending mode vibration and a torsion mode vibration that occurs at a first predetermined frequency, the liner not being configured to substantially damp shell mode vibration that occurs at a frequency that is not equal to the first predetermined frequency, the damping member being coupled to the liner, the damping member being configured to primarily attenuate shell mode vibration in the hollow shaft at one or more desired frequencies; wherein the tuned damper attenuates the at least one of the bending moment vibration and the torsion mode vibration at the first predetermined frequency and also attenuates shell mode vibration.