摘要
运用ANSYS软件对低碳钢焊件进行激光全熔焊温度场研究。采用高斯面热源与锥体热源的组合热源模型,考虑材料参数随温度变化特性,模拟得到了焊接温度分布,并分析了焊接工艺参数与锥体热源模型参数对温度场的影响。结果显示,激光全熔焊熔池近似"钉头状",热源附近温度梯度巨大,熔宽与焊接速度成反比、与焊接功率成正比关系,体热源模型参数对熔宽影响较大。通过焊接试验,基本验证了温度场模拟的正确性。该研究为激光全熔焊接工艺参数优化和计算机辅助焊接奠定了基础。
The temperature field of laser full penetration welding for low-carbon steel was studied by ANSYS software.Considering the characteristic of material parameters changing with temperature, the three-dimensional thermal model was established by using the combined heat source model of Gauss surface and conical heat source. The welding temperature distribution was gotten by simulation. The influence of welding process parameters and conical heat source model parameters on temperature field was analysed. The results show that molten pool of full penetration laser welding is approximately like nail heads, and the temperature gradient near heat source is huge. The welding width is proportional to welding power and inversely proportional to welding speed. The parameters of body heat source model have great effects on the welding width.The accuracy of temperature field simulation is basicly verified by the welding experiments. The study can lay foundations for the optimization of full penetration laser welding process parameters and computer aided welding.
出处
《热加工工艺》
CSCD
北大核心
2015年第13期192-195,共4页
Hot Working Technology
基金
江西省教育厅科研项目(CJJ13070)
关键词
激光全熔焊
温度场
ANSYS
单因素影响
full penetration laser welding
temperature field
ANSYS
single factor influence
