基于多目标优化设计的铸钢冷却壁结构优化研究

有限元法及最优化方法是工程分析最主要的两个数学工具，将两者有机结合起来，可以实现真正意义上的冷却壁性能优化计算机辅助设计。基于正交回归设计确定冷却壁的结构组合，利用大型有限元分析软件ANSYS对不同结构参数下的铸钢冷却壁进行三维稳态温度场及应力场计算，然后通过MATLAB多目标优化设计方法计算得到铸钢冷却壁的最优结构参数。计算结果表明，优化结构参数后的冷却壁比原冷却壁最高温度下降7．88％，最大热应力下降6．14％。

Structural Optimization of BF Cast Steel Cooling Stave Based on Orthogonal Experimental Design Method

Finite element analysis and orthogonal experimental design methods are two major mathematical tools in engineering analysis, the optimal thermal and stress performance of cooling stave can be accurately achieved by using both of the mathematical methods. The orthogonal experimental design method was employed to determine the group of cooling staves which have different structural parameters. The steady-state highest temperature and thermal stress of cooling staves was numerically simulated and analyzed by engineering software ANSYS. The optimal structural parameters of cooling stave were obtained by using MATLAB multi-objective optimize method. The calculation results showed that the highest temperature of optimized cooling stave was (7.88)% lower than the original one and the highest thermal stress of optimized cooling stave was 6.14% lower than the original one.