文档介绍：感应透热有限元模拟分析
许雪峰,吴金富
(浙江工业大学机电学院,浙江杭州 310032)
摘要:采用有限元分析法和 ANSYS 软件,引入复矢量磁位,推导了感应加热有限元模拟的数学模型。讨论了感应
加热有限元分析中温度场与电磁场耦合、工件材料物理参数温度依赖性等关键技术问题的处理方法。分析了圆
柱工件的感应透热过程,得到了坯料内的温度分布状况以及温度随时间的变化规律。结果表明,数值模拟结果与
工程实际应用工况基本一致。
关键词:感应透热;有限元;数值模拟;电磁场;温度场
中图分类号:TG155. 2 文献标识码:A 文章编号:0254-6051(2005)12-0085-04
Finite Element Method Simulation of Induction Heating
XU Xue-feng,WU Jin-fu
(CoIIege of MechanicaI and EIectricaI Engineering,Zhejiang University of TechnoIogy,
Hangzhou Zhejiang 310032,China)
Abstract:A mathematicaI modeI was deduced to describe the finite eIement method(FEM)simuIation of induction heat-
ing with the ic vector potentiaI with the ANSYS software. The coupIed thermaI and eIectro ic fieId probIem
taking account of nonIinear materiaIs characteristics reIated to temperature was discussed. The induction heating process
of cyIinder workpiece was anaIyzed,and the temperature distribution and its variation with time were obtained. The resuIts
show that the simuIation resuIts are in accordance with the practicaI appIication.
Key words:induction heating;finite eIement method( FEM);numericaI simuIation;ic fieId;temperature
fieId
锻造技术作为毛坯生产的重要制造手段之一,在——
V > H =
机械行业中占有重要的地位。感应加热以其所具有的
—
— aB
热效率高、加热时间短、工件表面氧化脱碳少、工件畸V > E = -
at ( )
变小、易于实现机械化和自动化等特点,在锻造热处理 1
· —
[ ] V D = 0
领域得到广泛的应用 1 。感应加热时,工件被置于交
—
变磁场中,在工件内部产生的感应电流将工件加热。 V