Study of Dynamic Behaviour of Coupled Human Vehicle Vibratory Models

Abstract

quotIn everyday life, most people are exposed to whole-body vibration (WBV) in their newlineoccupational life, especially drivers of various vehicles such as dumpers, excavators, newlinescrapers, buses and trucks. Usually, road surface irregularities act as major source that newlinevibrates the vehicle body through the tire /wheel assembly and the suspension system. newlineResearchers [20 and 21] revealed that the vehicle vibrations affect adversely the health newlineand hence reduce the life quality and might cause the loss of performance on working newlinepeople. The side effects of the vibration can be both physiological and neurological newlinewhich in many cases lead to permanent injury or disability. A human body is a very newlinesophisticated dynamic system whose mechanical properties vary from one moment to newlineanother and from one individual to another. One approach to understand the human body newlinevibration is via a suitable mathematical model that duplicates measured human body newlinefrequency response. The model is useful for studying the response of a system due to newlinewide variety of input conditions without resorting to the experimental program and newlineendangering the human subject.quot newline newline