扫描电子束表面改性过程温度场的有限元分析

Temperature Field Finit Element Simulation for Surface Modification by Scanning Electron Beam

根据热传导理论和扫描电子束焊机的实际工作状态,模拟了扫描电子束表面改性过程的温度分布。采用六面体划分网格和四面体划分网格两种模式,来模拟改性过程的温度变化,并比较了两种模式下的温度分布。结果表明:六面体划分网格和四面体划分网格两种模式下的温度分布基本相似,而采用六面体划分网格的模型的计算效率较高。

According to the Theory of heat conduction and the actual experimental condition of the scanning electron beam welder, a finite element model was established to describe the surface modification process of scanning electron beam. The hexahedral meshing and tetrahedral meshing were used to simulation the temperature of the modification process. And temperature distribution of the two model were compared. The simulation reveals that their temperature distribution were similar, and the efficiency of the model of the hexahedral meshing was better.