The manufacturing of hollow section profiles using high strength metallic alloys may suffer of relevant drawbacks such as springback, reduced formability as well as wrinkling, which often limit the process capabilities. Localized heating of cross section sectors may allow a significant reduction of these issues thanks to the neutral layer shift and lowered yield stress. The paper describes an analytical approach to provide a fast prediction of the stress and strain distributions in the cross-section and their effects on the springback as consequence of the process thermal and mechanical parameters. Experimental and numerical validations confirm the analytical model reliability.

中文翻译：

---

叠加局部热场的管件旋转拉伸弯曲的见解

使用高强度金属合金制造中空截面型材可能会遭受相关的缺陷，例如回弹，成型性降低和起皱，这通常会限制加工能力。由于中性层移位和降低的屈服应力，横截面扇区的局部加热可以大大减少这些问题。本文介绍了一种分析方法，可以快速预测横截面中的应力和应变分布以及由于过程热和机械参数而对回弹的影响。实验和数值验证证实了分析模型的可靠性。