基于均匀试验响应面法在鱼雷外形设计中的应用

Application of Response Surface Methodology Based on Uniform Test to Shape Optimization Design of Torpedo

在鱼雷外形优化设计过程中,由于要考虑各学科之间的耦合,且把所有学科都集中在一个反复迭代的优化过程中,其运算量和计算时间是采用常规方法所难以实现的。该文首次在鱼雷外形优化设计中采用了基于均匀试验的响应面方法,在设计空间选取合适的试验点,构造一定精度的响应面模型,并在该模型基础上进行优化设计。通过算例计算说明,该方法可以克服常规设计方法计算成本高,计算操作复杂的缺点,提高了运算效率,其优化结果与现有鱼雷头部曲线比较分析表明,本文提出的鱼雷外形优化设计方法可以大大减少各学科分析时间以及优化步骤,优化结果接近实际工程应用。

We need couple disciplines each other, and put all of the disciplines in a optimal process of repeated iteration together in the process of torpedo shape optimization design, which is difficult to practice by conventional optimization strategy- because of the high cost of calculation. To reduce computation task, we adopt response surface methodology based on uniform design in shape optimization design of torpedo. We select suitable point in design space, built response surface model with given accuracy, and conduct optimization design. The calculation results of an example show that the proposed method can reduce calculation task and improve operational efficiency. Comparison between the optimized and existing torpedo head shows that the method can signif- icantly reduce the analyzing time and calculation steps, and the optimal result approaches to the engineering application.