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
周 杰， 苏 竹， 邱媛媛
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作者单位：（重庆大学 材料科学与工程学院，重庆 400044）
中文关键字：风机叶片； 热力耦合； 热压成形； 回弹； 实验
英文关键字：fan blade; thermal-mechanical coupling; rebound; experiment
中文摘要：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。
英文摘要：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.