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The application of multi-objective robust design based on Dual-Kriging in the sheet drawing process
Author(s): 
Pages: 37-42
Year: Issue:  3
Journal: Journal of Plasticity Engineering

Keyword:  板料成形Dual-Kriging模型多目标稳健优化粒子群算法;
Abstract: 板料拉深成形工艺中,由于设计参数波动的影响,导致在传统最优工艺条件下成形件质量不够稳健.该文采用板料成形有限元仿真、代理模型,并结合稳健设计思想,提出基于Dual-Kriging模型的稳健设计方法.筛选影响成形质量的主要模具几何、工艺参数,并确定其相应波动范围;基于有限元仿真,运用Kriging模型,建立设计参数与成形质量的函数关系;根据参数波动情况,基于第一重Kriging模型以及Monte Carlo模拟,运用Kriging模型,建立设计参数与成形质量期望与方差的第二重模型;运用基于拥挤距离的粒子群算法,以及灰色关联分析进行多目标优化,完成设计参数的稳健设计.将该方法运用于NUMISHEET 93的方盒件拉深成形,与传统确定性优化设计相比,可有效减少成形质量的波动范围以及不确定性分析的计算量,提高成形件的稳健性.
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