Open AccessAttenution of Motorcycle Handle Vibration using Suspended Handlebar
Author(s) -
Nabil Mohamad Usamah,
Zaidi Mohd Ripin
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/815/1/012013
Subject(s) - transmissibility (structural dynamics) , vibration , automotive engineering , cylinder , engineering , modal , acoustics , displacement (psychology) , range (aeronautics) , structural engineering , marine engineering , mechanical engineering , materials science , vibration isolation , physics , aerospace engineering , psychology , polymer chemistry , psychotherapist
Motorcycle rider is exposed to the handle vibration. Extended exposure to high level of handle vibration can result is hand-arm vibration syndrome (HAVs). In South East Asia the majority of the motorcycle are powered by single cylinder small displacement (70 – 125 cc) engines. This paper describes the modal analysis of a small single cylinder underbone type motorcycle widely used in the rural and urban for commuting to workplace. A suspended handlebar is developed by mounting the handlebar on rubber mounts. Transmissibility measurement are carried out for static and on the road condition. There are conditions where transmissibility is above unity due to resonance for the existing handlebar and this condition is overcome by the suspended handlebar except at frequency of 25 Hand this was below the operating frequency range of the motorcycle engine of cruising speed (50 – 60 Hz). On the road tests show that the handlebar is effectively attenuate with the installation of the engine mounts. Maximum attenuation of 79 % is achieved at 3300 – 3400 rpm which give HAV of 3.41 ms −2 .