抱轨制动系统热-机耦合温度场分析

Analysis on thermal-mechanical coupling temperature field of rail-holding brake system

抱轨制动过程中产生的温度场是影响制动效果的关键因素。基于传热学理论建立了抱轨制动系统的热-机耦合热传导数学模型,运用ANSYS软件建立了制动系统有限元分析模型。通过对闸片尺寸、定制动力下不同摩擦因数和定摩擦因数下不同制动力对温度场大小和分布的影响进行了仿真分析,得出了不同工况下单轨吊制动系统的温度场大小和分布规律,并试验验证建立的理论模型和仿真分析结论是可靠的。研究结论为抱轨制动系统的设计提供理论参照。

The temperature field generated during rail-holding braking process is the key factor to affect the braking results. In the paper, the mathematical model for thermal-mechanical coupling thermal transfer of the rail-holding brake system was established based on the heat transfer theory, and ANSYS was applied to establish the finite element model of the brake system. In addition, the influence of the size of the braking disc, the friction coefficient at given braking force and the braking force at given friction coefficient on the magnitude and the distribution of the temperature field were simulated and analyzed, and the magnitude and the distribution laws of the temperature field of the brake system for monorail crane in various operation modes were obtained. Test results showed the established theoretical model and the simulation results were reliable. The research results offered theoretical reference for the design of the rail-holding brake system.