PREDICTION OF HEAT ACCUMULATION OF SYMMETRICAL RUBBER BUFFER ON TRACK-TYPE BULLDOZER

摘要

Symmetrical rubber buffers mounted on a track-type bulldozer are used impassive damping for the reduction of vibrations. As heat accumulation due to hysteresis may occur in continuous operation distributions of three typical cases were evaluated by FEM. The simulation result shows that hysteresis-related heat accumulation occurring near the contact region of the rubber pad remains unchanged in different cases. The maximum temperature in the case of earthmoving somewhat exceeds the range. The value of cutting and bulldozing is below the range. The value of loosening obviously exceeds the range. The great conductivity gap of heat flux between steel and rubber, which caused the most heat, was dissipated through the steel plate. Superficial temperatures were measured with a non-contact thermometer for the convenience of calculation that revealed a fair agreement between simulation and measurement in the case of earthmoving and cutting andbulldozing case. A lot of hysteresis-related heat produced due to excessive load caused a large error.