论文部分内容阅读
介绍了异质金属 Fe- Ni电阻点焊熔核形成过程的三维电、热学有限差分模型 ,提出了异质金属点焊过程导电、传热三维耦合作用的模拟方法、接触电阻分析方法和产热结构处理方法。模型中也考虑了随温度变化的材料性能以及各种边界冷却条件的影响 ,模拟过程分析了改善异质点焊接头的办法。数值模拟结果与实验吻合良好。该模型提供了一种有效的异质点焊过程理论的分析手段。
The three-dimensional finite difference model of electrical and thermal nugget formation in heterogeneous metal Fe-Ni resistance spot welding is introduced. The simulation method of three-dimensional coupling of conduction and heat transfer in heterogeneous metal spot welding process is proposed. The contact resistance analysis method and heat production Structure approach. The model also takes into account the material properties as a function of temperature and the effects of various boundary cooling conditions, and the simulation process analyzes ways to improve heterogeneous spot welds. The numerical simulation results agree well with the experiment. The model provides an effective heterogeneous spot welding process theory analysis.