曲轴红套感应加热有限元仿真和优化  

Finite Element Method Simulation and Optimization of Induction Heating to Crankshaft Shrinkage Fitting

作　　者：张青雷[1,2] 喻文广[2] 郭井宽[2] 桂士弘 

机构地区：[1]上海理工大学机械工程学院,上海200093 [2]上海电气集团股份有限公司中央研究院,上海200070

出　　处：《内燃机工程》2016年第1期109-115,共7页Chinese Internal Combustion Engine Engineering

基　　金：上海市信息化发展专项资金项目(201001007)

摘　　要：根据电磁感应和热传导理论,导出了工件感应加热的电场、磁场、温度场分布基本方程,建立了三维有限元分析模型,并考虑了工件材料属性随温度变化的非线性特性。制定了新的热加工方案,利用ANSYS分析感应加热过程曲柄的温度场分布和热变形。借助多学科优化软件iSIGHT集成ANSYS,将多目标优化算法NSGA-Ⅱ引入感应加热线圈电流、频率等参数的寻优中。最后对仿真优化得到的线圈参数进行试验验证。试验结果与仿真结果误差在4%以内,验证了有限元模型的准确性及多目标优化算法的可靠性。According to the theories of induction heating and thermal conductivity, a mathematical equation about the distribution of electromagnetic field and thermal field was derived and a three-dimensional finite element analysis model was established, considering the nonlinear characteristics of material properties changed with temperature. A new heating method was developed for use of the FEM software ANSYS to simulate the distribution of temperature field and thermal deformation in the process of crank induction heating. The multi-objective optimization algorithm NSGA-Ⅱ within iSIGHT was adopted to search optimal input parameters. Lastly the optimized results were verified by experiments. Results show that the deviation of the experimental results compared with the simulation accuracy and reliability of the FEM model and optimization analysis is less than ± 4%, which verifies the algorithm.

关 键 词：内燃机 曲轴红套 感应加热 有限元 数值模拟 

分 类 号：TK402[动力工程及工程热物理—动力机械及工程]