Abstract: Firstly, the ANSYS finite element software was applied to study thermal analysis of the fin-tube with trigonal sections in order to acquire the temperature contours, which showed that at the round of pipe the temperature reached the maximum value from the image. The varied temperature tendency of vertical direction with the fin and axial direction of the pipe were analyzed to get respectively the temperature curve and the temperature contours by definition of the path. What was more, the indirect method was applied for thermal stress analysis at the basis of thermal field in order to require distribution situation of thermal stress by corresponding path. It turned out that thermal stress mainly focused on pipe and the joints of the pipe and fin. At last, according to the analytical and design standard for steel pressured vessels, the assessment of the corresponding stress was analyzed to prove its security in the simulative environment, making the basis of reference for further research.

Key words: ANSYS, Fintube, Thermal analysis, Thermal stress analysis, Safe assessment

摘要： 通过ANSYS有限元分析软件,对具有三角形截面的翅片管进行热分析,获得了其温度分布云图,发现管道周围温度最大;定义路径后,得到温度分布曲线及温度分布云图,分析了管道轴向及沿着翅片径向的温度变化趋势;在模拟温度场的基础上,应用间接法对其进行热应力分析并定义相应的路径,其目的是为了对热应力分布进行进一步的分析,发现管壁和管壁与翅片的连接处热应力最大;基于JB 4732—1995《钢制压力容器分析设计标准》,对应力进行了评定,得出了该翅片在模拟环境中是安全可靠的。研究结果为进一步的研究奠定了基础。

关键词: ANSYS, 翅片管, 热分析, 热应力分析, 应力评定