Numerical computation of3 D welding temperature distribution was carried out by using element birth and death to simulate the forming of weld bead and welding heat input.

• 在用有限元进行焊接温度场的数值计算中,通过控制单元的生死,来模拟焊缝的形成和焊接热量的输入,计算结果与焊接温度测试结果很接近。