Abstract
This chapter presents a mathematical model to investigate the effect of vibrations on human body and vehicle due to rough roads. The chapter investigates the effect of three types of roads, namely, gravel road, paved road, and unpaved road. The problem has been analyzed under the scope of the linear vibration theory. The theoretical analysis performed on the model under consideration is based on a computer program using the transfer matrices method. The output variables obtained from the program are amplitudes, velocities, and accelerations resulting from impact force produced by road roughness. The previous parameters are computed for nine positions: the vehicle, hip, abdomen, diaphragm, thorax, torso, back, and head of the driver. The analysis is a step toward establishing international standards that allows a margin of safety for human exposure to vibration in passenger cars. The parametric analysis performed in this work also provides useful data to get better comfortability of the driver during vehicle motion on rough roads.
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