橡皮液压成形工艺的可靠性稳健优化设计方法

针对当前橡皮液压成形工艺过程中材料特性、工艺参数和其他随机因素都存在的固有波动问题,面向飞机精准制造,提出了一种考虑不确定性的可靠性稳健优化设计方法.该方法基于稳健优化设计和合理的可靠性约束,对比了可靠性稳健优化解和传统优化解相关度量指标,并对2B06-O态铝合金板材橡皮成形典型的曲弯边零件进行了工艺试验验证.结果表明该方法可有效降低质量评价指标对不确定性因素的敏感度,提高了橡皮成形工艺的稳健性和可靠性.

Reliability-based robust optimization design for rubber fluid cell forming process

The inherent variations that exist in aluminum alloy sheet properties,process parameters and other random factors effect forming quality of rubber fluid cell forming process.Oriented to precision manufacturing of aircraft,a reliability-based robust optimization design approach for rubber fluid cell forming process based on robust optimization design and reasonable reliability constraints was proposed.The reliability-based robust optimization design solution with the traditional optimization design solution was compared,and the typical flanging parts of 2B06-O aluminum alloy sheet in rubber fluid cell forming were used to verify the practicability and validity.The results show that the proposed approach made quality performance indicators less sensitive to uncertainties,and improved the robustness and reliability of the rubber forming process.