4. Conclusions
The substructuring methodology presented, where an undeformed
coupling interface formalism is used to model a vehicle
suspension system, gives at hand a powerful tool for investigating
the complex mechanisms associated with structure-borne sound in
vehicles. By using appropriate models for each substructure, a
study of the influence of the rubber bushings used to connect the
link arm to the car body is undertaken. It is found that, by rotating
the bushings, the power transferred to the car body can be altered
by orders of magnitude, on one hand opening up for radically
decreasing the disturbances transmitted through the suspension
system, but on the other hand as well identifying a source of strong
sensitivity to imperfections in the actual physical hardware
installation.