Refine Your Search

Search Results

Technical Paper

Simulation of Low Torque Bushings in Automobile Suspensions

1995-05-01
951279
One of the primary functions of automobile suspension bushings is to isolate the vibrations being transmitted from the suspension to the passenger compartment. Under certain operating and road conditions, the viscoelastic characteristics of the rubber bushings are not sufficiently high to damp out the road disturbances. Also, small amplitude disturbances from the road at the tire foot prints are usually too small to activate the shock absorber and hence are not easily damped out. Low torque bushings can improve this situation using Coulomb damping which is generated by providing a slip surface between the rubber and the inner or outer metal. This construction therefore allows the possibility of controlling the torsional deformation and limiting the torque transmitted under service conditions by adjusting the torque required to slip. In this paper, we study the behavior of low torque bushings in an automotive rear suspension and compare their performance against conventional bushings.
X