运用有限元软件AN SY S对300 kA铝电解槽焙烧启动过程一系列温度场下的热应力耦合场进行了数值计算,通过计算内衬外表面热膨胀压力,对槽壳变形和摇篮架工字梁上拱进行了分析,并讨论了内衬外表面热膨胀压力的变化规律,为铝电解槽焙烧启动过程仿真与优化提供了参考. A finite element software AN SYS was used to numerically calculate the thermal stress coupling field under a series of temperature field during the start-up of a 300 kA aluminum reduction cell. By calculating the thermal expansion pressure on the outer surface of the liner, The arch was analyzed, and the variation law of the thermal expansion pressure on the outer surface of the liner was discussed, which provided a reference for the simulation and optimization of the roasting start-up process of the aluminum reduction cell.