The Design of Vibration Nomograph for the Vehicle Vibrations Affecting Man

A severity analysis is made to evaluate the effect of corresponding shock or transient vibration on the man on the vehicle passing through a series of road bumps. Road bumps cause undesirable human vibrations due to vehicle vibration meant to limit the vehicle speed. In this study, vehicle vibrations are first computed following the vibration analysis procedure, in which equations of motion are solved using MATLAB. A light vehicle is employed to record vibration measurement using a triaxial accelerometer setup indigenously with data acquisition using a laptop. The total vibration level received at the vehicle is evaluated through the design of the Vibration Nomograph based on ISO 2631 to assess the harmful and/or dangerous levels of vibration. It is found that if human beings are exposed to this level vibration for a more extended period of 12-h or more, they will be facing health hazards such as effects on the central nervous system and musculoskeletal diseases.