Theoretical Ground Pressure Distributions of Log Skidders

Abstract

ABSTRACT EFFORTS to reduce soil compaction caused by ground-based logging vehicles have largely ignored ground pressure distribution. Therefore, mathematical models describing theoretical pressure distributions along the bottom of the tracks of tracked logging vehicles and on the bottom of the tires of wheeled logging vehicles were developed and are presented here. Once the log skidding resistance is assumed, the pressure distribution of a loaded vehicle operated under constant velocity and direction may be estimated. Because soil compaction is related to applied pressure, the theoretical ground pressure distributions determined from these mathematical models more precisely describe a vehicle's soil compaction potential than an average unloaded vehicle pressure.