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基于高频感应加热涡流分布及透入深度的特点,为模拟钢板高频电磁感应加热成形的温度场,提高数值模拟计算精度,结合电磁感应加热头的形状尺寸,建立了一种用于模拟电磁感应加热成形的热源模型。模型建立过程中,对其能量分布给出了明确的热流表达式,利用有限元方法分析了电磁感应加热成形的热源模型的有效性。结果表明,利用该热源模型分析的温度场结果与试验结果吻合良好。高频电磁感应加热的峰值温度位于感应加热头作用区域,随着输出功率或感应加热时间的增加,峰值温度增加。
Based on the characteristics of eddy current distribution and penetration depth of high frequency induction heating, in order to simulate the temperature field of high frequency electromagnetic induction heating forming of steel plate and improve the numerical simulation accuracy, combined with the shape and size of electromagnetic induction heating head, Magnetic induction heating forming heat source model. During the process of model building, a clear heat flow expression is given for its energy distribution. The effectiveness of the heat source model of electromagnetic induction heating forming is analyzed by finite element method. The results show that the temperature field analyzed by the heat source model is in good agreement with the experimental results. The peak temperature of high frequency electromagnetic induction heating is located in the action area of the induction heating head, and the peak temperature increases as the output power or induction heating time increases.