(1. 浙江大学 能源清洁利用国家重点实验室，杭州 310027；
2. 中南大学 冶金科学与工程学院，长沙 410083；
3. 昆山铝业有限公司，昆山 215313)
摘 要: 为了优化导流型铝电解槽聚铝沟设计方案，对槽内热应力分布特征进行研究分析。采用商用有限元计算软件ANSYS针对两种聚铝沟设计方案(即方案Ⅰ为工字型聚铝沟结构；方案Ⅱ为单聚铝沟结构)的导流槽模型进行了电−热−应力耦合计算，同时针对热应力引起的槽体形变进行模拟。结果表明：采用方案Ⅰ工字型聚铝沟结构时，槽体内部热应力较大，尤其是两端靠近横向聚铝沟的阴极炭块内部具有较大的应力集中，而采用方案Ⅱ单聚铝沟结构时，该处的应力集中得到了较好的缓和，槽体形变较小。
关键字: 导流型铝电解槽；热应力；形变；有限元方法
on thermal stress distribution in drained aluminum
reduction cell
（1. State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China;
2. School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China;
3. Kunshan Aluminium Co Ltd, Kunshan 215313, China）
Abstract:In order to optimize the aluminum accumulation sump designs, the characteristics of thermo-stress distribution in the drained style aluminum reduction cells were studied. The electric-thermo-mechanical coupled simulations of two types of drained aluminum reduction cells, i.e. scenario Ⅰ is with central sump and two accessorial sumps at the ends of the cell; scenario Ⅱ is with only a central sump at the cell bottom, were conducted on the commercial finite element method software package ANSYS. The results show that, for scenario Ⅰ, a relatively large thermal stress intensity exists in the carbon cathode, especially for the carbon blocks at the two ends of the cell. For scenario Ⅱ, the aforementioned thermal stress intensity is relieved remarkably, and the deformation is relatively small.
Key words: drained style aluminum reduction cell; thermal stress; deformation; finite element method
