Abstract: The round-to-square structural component of the heating furnace flue is analyzed using the finite element software ANSYS based on an example. The calculation results are verified by referring to the analysis and design standards of pressure vessels, and the influence of the characteristic dimensions of the round-to-square structure on its structural stress level and deformation is studied. The study found that: reducing the area ratio of the upper and lower sections of the round-to-square structure can reduce the maximum stress level and structural deformation of the structure; when the height of the structural component is close to the diameter of the top circle, its maximum stress and maximum deformation are relatively low; reducing the difference in the lengths of the two sides of the bottom rectangular surface can also achieve lower stress levels and structural deformation. The results can provide references and basis for the structural design of round-to-square structural components.

Key words: font-family:-apple-system, blinkmacsystemfont, ", font-size:14px, background-color:#FFFFFF, ">heating furnace, flue, round-to-square, finite element, ANSYS, characteristic dimension, stress analysis, deformation

摘要： 结合实例应用有限元软件ANSYS分析加热炉烟道用天圆地方结构件。借鉴压力容器分析设计标准对计算结果进行校核，进而研究天圆地方结构件特征尺寸对其结构应力水平和变形量的影响。研究发现：减小天圆地方结构件上下截面积比可以降低结构最大应力水平和结构变形量；结构件高度取值与顶部圆形直径相近时，其最大应力、最大变形量较低；减小底面矩形两边长之差也可以获得较低的应力水平和结构变形量。以上结果可为天圆地方结构件结构设计提供参考和依据。

关键词: font-family:-apple-system, blinkmacsystemfont, ", font-size:14px, background-color:#FFFFFF, ">加热炉, 烟道, 天圆地方, 有限元, ANSYS, 特征尺寸, 应力分析, 变形量