Product Page - Rouillard, Vincent: Some Observations on the Heave, Pitch and Roll Vibration of Road Transport Vehicles, 2013
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This paper describes the initial findings from an investigation into the nature of the pitch, roll and heave motion of road transport vehicles. Because the vertical vibrations emanating from road vehicles have been shown to be significantly more severe than the other modes of vibration, the broadly adopted approach to undertaking transportation field trials have been restricted to simulating the vertical motion. However it is becoming increasingly recognized that, in some cases, the pitch and roll motion experienced under certain conditions, although relatively less severe, can be as detrimental to the shipment as vertical vibrations. This is particularly the case for vehicles with short wheelbases, carrying tall loads. Another motivation for the study is the increasing availability of vibration test systems capable of simultaneously producing vertical, pitch and roll motion. Although data and guidelines for simulating vertical vibrations of road vehicles are readily available, there is a distinct lack of information on pitch and roll motion. This paper describes the findings of a research project aimed at better understanding the relationship between vertical vibrations and pitch and roll motion for road transport vehicles. An inertial measurement unit (IMU) was used to collect heave, pitch and roll data for a range of conditions (vehicle type and speed and road roughness).