基于响应面法（RSM）的锻造预成形多目标优化设计

Multi-Objective Preform Optimization Using RSM

摘要:

以航空发动机涡轮盘锻件为研究对象，应用响应面法（Response Surface Methodology，RSM）和有限元数值模拟（FEM）对锻造过程预成形设计的多目标优化问题进行了研究。首先以模具充填完整和提高锻件内变形均匀性为目标，建立了有限元数值模拟与响应面法相结合的二阶分析模型，并对优化结果进行了讨论。其次，在原优化设计的基础上以降低锻造过程的成形载荷为目标进行了预成形再设计。结果表明，应用响应面法可灵活有效的对难变形材料锻造预成形坯料形状进行多目标优化设计。

Abstract:

The multi-objective optimization was studied using response surface method (RSM) and FEM simulation for a preform design of aeroengine disk forging. Firstly, taking the deformation homogeneity within forgings and die filling completeness as the objective, a reduced quadratic model was developed through regression analysis and ANOVA (analysis of variance), and then the optimal results are obtained and discussed. Secondly, redesign and optimization were carried out to reduce the deformation load on the basis of the former optimization results. The results show that RSM is an effective and flexible method to realize multi-objective preform optimization design for hard deformed material forging.