The twice impulse process is employed to change the metallic structure of the resistancewelding so as to improve the welding strength.
应用二次脉冲电流，改变电阻焊熔核的金属组织结构，达到提高焊接强度的目的。
2
Based on the pre-process, numerical simulation and post-process, the application of visualization technique, which is used in the numerical analysis of resistance spot weldingprocess, is introduced.
从前置处理、数值计算及后置处理三个方面出发，着重介绍可视化技术在电阻点焊过程数值分析软件中的应用。
3
Numerical simulation is an important method for investigating of resistance spot weldingprocess.