鼓式制动器摩擦副热力耦合分析

Thermal-mechanical coupling analysis on friction pair of drum brake

采用Solid Works建立带式输送机鼓式制动器三维模型,导入ANSYS Workbench进行温度场与应力场的耦合分析,研究了在不同制动速度和制动压力下模型的应力应变与温度分布变化情况。结果表明:应力主要集中在制动轮上;应变主要集中在摩擦片上;应力应变与温度均随制动速度与制动压力的增加而增加;应变与温度均随制动时间增加而增大,应力随制动时间的增加趋于稳定;应力波动幅度随制动速度的增加而增大,应变处于稳定值的时间随制动速度的增加而减少。

The 3D model of a drum brake for belt conveyor was built in SolidWorks, and imported into ANSYS Workbench to conduct the analysis on coupling of temperature field and stress field. The distribution and diversification of stress, strain and temperature of the model were studied at various braking speed and braking pressure. The obtained results showed： the stress mainly concentrated on the braking wheel, and the strain mainly centralized on the friction plate; the stress, strain and temperature increased with the increase of braking speed and braking pressure; with the increase of braking duration, the strain and the temperature increased, while the stress tended to be stable; with the increase of braking speed, the fluctuation amplitude of stress increased, and the duration that stable strain lasted decreased.