基于热力耦合分析的叶片热压回弹预测及控制

Rebound Prediction and Control on Hot Forming Process for Fan Blade Based on Thermal-mechanical Coupling

针对某型号风机叶片的形状特点设计出成形工序,提出一套结合实际制造能力的成形工艺方案。基于热力等多因素耦合在Deform-3D平台上进行数值模拟和工艺优化,深入分析了成形过程的回弹、翘曲及应力、应变分布规律,提出了应对变形回弹的规律的控制措施,由此获得合理的工艺规范,并取得实验验证,从而解决了制造过程中的关键技术难点,为叶片类零件的生产提供了一种实用、高效、经济、可靠的成形工艺。

According to the shape features of a fan blade,its forming process was designed,and a forming process scheme combining actual manufacturing capacity was proposed.Based on the factors of thermal-mechanical coupling in Deform-3D platform,the numerical simulation and process optimization was done.After analyzing the rebound of forming process,warping and strain distribution,some measures dealing with spring back were given.Thereby a reasonable process specification was made and validated by experimental manufacturing.Thus the key technical problems were solved.This provides a practical,efficient,economical and reliable forming process for the production of similar blade parts.