Characteristics of Residual Stresses Generated by Induction Heating on Steel Plates
Characteristics of Residual Stresses Generated by Induction Heating on Steel Plates
复制标题
DOI：
10.3390/met8010025
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
May Phyo Aung;M. Nakamura;M. Hirohata
中科院分区：
文献类型：
--
作者：
May Phyo Aung;M. Nakamura;M. Hirohata
对12 mm厚钢板感应加热残余应力的特性进行了实验和数值模拟研究。在250 °C和350 °C下的IH在加热场中提供高的拉伸残余应力，但远离加热场提供高的压缩应力。双加热的情况下产生更高的压缩残余应力-约200 MPa-比单加热的情况下，因为压缩残余应力的叠加。当IH应用于易受疲劳损伤的现有钢结构构件的修复工作时，将有望改善焊接接头的疲劳性能。分别采用体热流输入和表面热流输入，建立了用内热源法预测残余应力的数值模拟模型。这将有助于确定最佳加热条件，如目标温度和加热场，以将IH应用于钢结构构件的实际修复工作。
This paper presents experimental and numerical investigations on the characteristics of residual stresses generated by induction heating (IH) on 12 mm thick steel plates. IH at 250 °C and 350 °C provided high tensile residual stresses in the heating field but high compressive stresses away from the heating field. The double heating case generated higher compressive residual stresses—around 200 MPa—than the single heating case because of the superposition of the compressive residual stresses. It will be expected to improve the fatigue performance of welded joints when IH is applied for repair work on existing steel structural members susceptible to fatigue damage. Numerical simulation models for predicting residual stresses by IH were proposed by adopting the body heat flux input and the surface heat flux input. They will be beneficial for identifying the optimum heating conditions, such as the target temperature and the heating field, for applying IH to the actual repair work of the steel structural members.