Vibration analysis of skidding tractor with an operator during raising–lowering a tree

Abstract

Abstract The aim of this article is to develop mathematical models that help at the design stage of design documentation for a skidder to determine the upcoming dynamic loads on the machine, the vibration effect on the machine and the operator, and scientifically based parameters to ensure their reduction. Vibration analysis and prediction of the skidding tractor with an operator allows predicting adverse events, prevent accidents, avoid costly and dangerous experiments, as well as optimize the design and operating modes. A particularly important degree of vibration loads affects the performance and health of the operator. The constant long-term effect of vibrations leads to increased operator fatigue and an increase in the number of errors in control. As a result, operator productivity significantly reduced. Baseline data that used in this article is related to the skidding trailer tractor TB-1M. So the results of this research may use as the foundation of future works for omitting vibration influence on the operator by designing active and smart dynamic vibration absorber for a different type of tractors. In addition, the effect of sitting stiffness and loading on the operator-tractor system have been investigated.