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Mathematical Models Predicting for Tree Skidding Forces and Its Evaluations  

Oh, Jae-Heun (Forest Practice Research Center, Forest Research Institute)
Hwang, Jin Sung (College of Forest and Environmental Sciences, Kangwon National University)
Cha, Du Song (College of Forest and Environmental Sciences, Kangwon National University)
Publication Information
Journal of Korean Society of Forest Science / v.96, no.4, 2007 , pp. 448-454 More about this Journal
Abstract
Mathematical models for predicting the ground and semi-ground skidding force have been developed. The skidding force is expressed as a function of log geometry, total weight and coefficient of skidding. The coefficient of skidding was determined under field tests. The validity of the model developed was examined by comparing the predicted and measured skidding forces. Calculated ground skidding force, using the model developed can be predicted well with that measured experimentally. The semi-ground skidding force calculated from the model, however, does not predict well due to its confined conditions experimentally.
Keywords
ground skidding; skidding coefficients; forestry machine; forest operation;
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