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A parametric simulation model of a steel-tracked feller buncher was developed1. This model can be used to predict the lift capacity, side tipping angles, grade-ability, and joint forces during a cutting cycle. The feller buncher is defined parametrically, allowing the user to quickly analyze different machine configurations simply by changing the value of a variable. Several simulations were performed to illustrate the application of the model.

A procedure for simulating the dynamics of agricultural and forestry machines using mechanical system simulation software is presented. A soil/track interface model including rubber-track and steel-track was introduced as well as equations that can be used to model mechanical and hydraulic power trains commonly found in tracked vehicles. Two rubber-tracked vehicles (agricultural tractors) and two steel-tracked machines (forestry vehicles) were simulated to illustrate the technique, and some analysis results are presented. The examples given in this paper are based on the author’s research over the past several years.