Mathematical model of a snowmobile for determining loads in carrier system

Abstract

When creating modern models of snowmobile motor vehicles, special attention should be paid to the design of power elements, including carrier systems, which can significantly increase their performance characteristics, such as load capacity, ride smoothness, fuel efficiency, and others. The high level of competition in the utility snowmobile segment requires designers to use a high level of modern design methods.

The carrying system of a snowmobile, as a rule, is a complex spatial structure, for the design of which it is necessary to know the direction and value of the loads acting on it from the side of the main components and assemblies, such as front and rear suspensions, steering, engine, transmission, and others. This paper presents a mathematical model of a utility snowmobile, described in the program for numerical analysis of the dynamics of rigid bodies, necessary to determine the values of forces and torques acting in the snowmobile's carrier system. For the calculation, the most dangerous load modes were selected, corresponding to a utility snowmobile. The obtained load values can be used to carry out the topological optimization of the snowmobile carrier system in order to obtain an optimal power circuit in terms of weight and strength.