新型空腔结构下的橡胶高温磨耗测试温度场的仿真研究

Simulation Study on Temperature Field of High-Temperature Abrasion Test of Rubber Under Novel Cavity Structure

基于内部生热理论及阿克隆磨耗机的结构,从热分析的角度改进橡胶磨耗测试方法,设计了一种新型空腔试验结构。新型结构采用强化传热界面下的内流体热输运方式,将轮辋空腔内高温流体作为热源,实现对试验胶轮内部加热。通过计算机仿真选取试验胶轮表层作为研究重点,将模拟结果与实际实验所得轮胎表层温度分布对比,验证了所设计结构的合理性和可行性。进一步探究不同模型入口结构以及部件材质对实验结果的影响,并对模型的稳态、瞬态温度场进行仿真分析,观察不同结构时胶轮温度分布特点。仿真测试结果表明,该新型空腔试验结构设计合理,且不同结构模型的胶轮试样内部的温度分布不同,为橡胶磨耗测试设备的设计提供依据。

Based on the theory of internal heat generation and the structure of Akron abrasion machine, this paper improves the test method of rubber wear from the perspective of thermal analysis and designs a new test structure. The new structure adopts the internal fluid heat transport method under the enhanced heat transfer interface, and uses the high temperature fluid in the rim cavity as the heat source to realize the internal heating of the test rubber wheel. Through the computer simulation, the surface of the test rubber wheel is selected as the research focus. The simulation results and the experimental surface temperature distribution of the tire are compared to verify the feasibility and rationality of the designed structure. Further this paper explores the impact of different structures on the temperature distribution characteristics by changing the model inlet structure and the impact of component materials on the experimental results, as well as the steady-state and transient temperature fields of the model. The simulation test results show that the design of the new cavity test structure is reasonable, and the temperature distribution inside the rubber wheel sample of different structural models is different, which provides a basis for the design of rubber abrasion test equipment.