Design of Motorcycle Handlebar for Reduction of Vibrations Using Tuned Mass Damper

Abstract

Vehicle comfort is related to vibrations induced due to surface irregularities and powertrain. It is a challenge to design a good suspension system and vibration absorber which isolates the driver/rider from the induced vibrations. The principle aim of a vehicle’s suspension system/vibration absorber is to isolate the occupant from the induced disturbances, while still allowing the average driver to maintain control over the vehicle and drive it safely. The purpose of the present study is to investigate the vibrations in motorcycle handlebar and modify handlebar to reduce the vibration for good ride comfort without affecting its handling. Motorcycle with an under square engine is selected for the experimentation. The under square engine has more stoke length than bore diameter, and hence, it is more susceptible to generate vibrations. A tuned mass damper system is designed and developed to attenuate handlebar vibrations. The results of investigation show vibration attenuation from 23 to 66% at various cases. The effect of tuned mass damper is substantially visible at higher engine RPM, and hence, proper modification of handlebar becomes essential in case of high revving application.