关键词: 带式输送机, 压陷滚动阻力, 温度效应, 三元件Maxwell模型

Abstract: Abstract: As the belt conveyor is developing towards long distance, heavy load, high speed ,indentation rolling resistance of belt conveyor is taking more and more proportion of the total energy. The temperature has very great influence on viscoelastic properties of rubber compounds of the backing, which affects the indentation rolling resistance of belt conveyor. however, the research about the temperature dependent resistance characteristics is seldom. Concerning this issue, firstly, DMA experimental data of rubber is used to simulate the viscoelasitc properties of modulus function with the temperature changes, then the function is imported into the three-parameter Maxwell model, then the mathematical models based on temperature effect is established. Secondly, in order to facilitate the solution, available approaches to determine the temperature function of Maxwell model and the contact length a and b between cover and rollers are given. Finally, numerical simulations are carried out to study the indentation rolling resistance characteristics under various temperature and belt speed. Research has clearly demonstrated that in -20℃ to 60℃ temperature range , indentation rolling resistance increases with the increase of temperature, and at certain temperature, indentation rolling resistance increases with the increase of belt speed.