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采用有限元分析方法研究电阻网用于路面融雪化冰的传热机理,以传热学为理论基础,推导出系统数学模型在进行数值分析时所遵循的控制微分方程及定解条件,并施加载荷,获取在不同的铺装功率和环境条件下的路面温度及结构层内的温度分布、升温规律。制作了试验模型,并设计装置连接思路,通过试验获得与有限元分析方法中相同条件下的路面及结构层内的温度。将试验记录结果与数值模拟结果进行对比,两者吻合较好。结合数值模拟与试验两个过程,进行一定的误差分析。结论是:可利用有限元分析方法及ANSYS软件模拟电阻网在不同环境条件下的融雪化冰这一非稳态导热过程。
The finite element analysis method is used to study the heat transfer mechanism of resistance net for ice-melting ice on pavement. Based on the heat transfer theory, the governing differential equation and the solution conditions of the mathematical model in the system are derived and applied Load, access to different pavement power and environmental conditions of the pavement temperature and temperature distribution within the structure layer, temperature law. The test model was made and the idea of device connection was designed. The temperature in pavement and structure under the same conditions as in the finite element analysis was obtained through experiments. The test results and numerical simulation results are compared, the two agree well. Combining the two processes of numerical simulation and experiment, some error analysis is carried out. The conclusion is that finite element analysis and ANSYS software can be used to simulate the non-steady-state thermal conductivity of snowmelting ice under different environmental conditions.