Snow Removal Equipment

摘要

The physical-mechanical properties of snow are treated. As for deformation, snow shows properties of elastic solids, plastic material and viscous liquids as well, depending on the temperature and applied load. A mathematical expression for deformation of material of this kind is given by Maxwell. Shear and tensile strength, as well as cohesion, increase with density of snow. For the purpose of designing snow removal equipment, a special coefficient of resistance to cutting is used, instead of the conventional coefficients of tensile, shear and cohesive strength. Hardness of snow is given consideration, since it influences the design of snow removal equipment to a great extent. The coefficients of friction, resistance to rollover and sliding are also discussed, which play an important role in the design and choice of snow removal equipment. (Author)