COMPUTATIONAL VIBRATION ANALYSIS OF VEHICLE SHIMMY BY A POWER-WORK METHOD

This paper presents the simulation of vehicle shimmy for a mid-size tr uck with focus;on a computational analysis tool that measures the powe r and corresponding work in dissipating the excitation energy. After a review of shimmy theory the power and work equations and their respon se classification in vibrating systems are introduced. Next, model val idation compare the full vehicle model to an actual test vehicle. Fina lly, two designs that suppress shimmy in the test vehicle are analyzed in the model by the power-work method, showing components that effect ively dissipate the shimmy energy.