UBC Theses and Dissertations

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UBC Theses and Dissertations

A deterministic simulation of logging truck performance Levesque, Yves


A deterministic simulation model is developed and programmed for a digital computer to represent the movement of logging trucks for specified alignment (actual or proposed) and truck-parameters. The force accelerating the vehicle is taken as the difference between transmission output wheel force and the resistance force at steady-state conditions at the instantaneous vehicle speed. The accelerating force is taken as constant over a small incremented distance and results in a vehicle speed with new loading conditions. The process is repeated through each gear, and time-distance and time-speed data are obtained. ' The technique described can be used to build up a distance travelled-time consumption history for a vehicle on a defined route. Such prediction enables a meaningful evaluation to be made of the time of a specified trip. Such an approach produces results acceptably close to observed data.

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