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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.

This paper discusses the necessity for designing farm tractors which have logical, rather than arbitrary, safety features. The paper is directed primarily to those who buy and use industrial equipment and urges this group to exercise their influence on tractor design by purchasing only those vehicles which meet recommended standards for safety and construction.