球扁钢肋骨三角形加热仿真研究

Simulation Research of Triangle-heating of Flat Bulb Steel Frame

针对球扁钢肋骨三角形加热矫正纵向弯曲变形,利用ANSYS软件和APDL语言编写仿真程序,实现了热-结构耦合场的数值模拟,得到了加热过程中温度场和结构场的求解结果。对于不同的加热速度与气流输入量,计算了肋骨表面最高温度和高度方向的变形量,利用MATLAB曲面拟合,得到了最高温度和变形量关于加热速度和气流流量的函数。并对这两个参数进行了优化,得到了满足温度约束下变形量最大的参数组合。研究内容和结果对球扁钢肋骨三角形加热的更深入研究和现场施工提供了一定的参考和指导。

As to triangle-heating for correcting the longitudinal bending deformation of flat bulb steel frame, the paper simulates the coupled thermal-structural field, obtaining the answers of both temperature and structure field, based on simulation program by ANSYS and APDL. It calculates the maximum temperature and deformation in height direction of the frame for different heating rate and airflow and gets the function of these two factors respectively using MATLAB suorface fitting. Finally, the paper optimizes these two parameters for getting a best combination to make the deformation biggest that under the maximum temperature constraint. The contents and results can provide a certain reference and guidance for deeper research and site operation of the triangle-heating.