EVALUATING COMFORT OF SEATED SUBJECTS BY 4 MEASURING VDV

Abstract

All the vehicles are exposed to vibrations caused by roughness of road or soil profile, which affects the health as well as causes discomfort to the occupants (driver and passengers). In the present study, Vibration Dose Value (VDV) has been recorded for the driver as well as pillion of two wheeler vehicle for different road profile having speed breakers, at different speed. Methodology were adopted from International Organization for Standardization (ISO) guidelines for whole body vibration (WBV) exposure having frequency ranges from 0 to 100 Hz. VDV of six healthy male subjects were recorded through Human Vibration meter via seat-pad tn-axial accelerometers for two minutes drive and psychophysical response were measured with the help of Borg CR10 scale. The Time to reach 15 VDV and discomfort decreases with the increase in vehicle speed and speed breaker's height, for both driver and pillion. Pillion feels more discomfort with the increase in vehicle speed and speed breakers height when compared with driver.