| 激光穿透焊的三维数值模拟 |
| |
| 引用本文： | 叶晓虎,陈熙. 激光穿透焊的三维数值模拟[J]. 工程热物理学报, 2002, 23(3): 348-350 |
| |
| 作者姓名： | 叶晓虎 陈熙 |
| |
| 作者单位： | 清华大学工程力学系,北京100084;清华大学工程力学系,北京100084 |
| |
| 基金项目： | 国家自然科学重点基金资助项目（No．59836220） |
| |
| 摘 要： | 本文对激光穿透焊进行了三维数值模拟,除考虑焊接速度影响外,还研究了Ｍａｒａｎｇｏｎｉ对流对熔池流动与传热的影响。将三维数值模拟结果与相应的二维模拟结果进行了比较,结果表明,Ｍａｒａｎｇｏｎｉ对流对熔池的形成有很大的影响,因此不可忽略。本文还给出了估计激光穿透焊中蒸气孔尺寸与焊接热效率的方法。
|
| 关 键 词： | 激光穿透焊 三维数值模拟 Marangoni对流 |
| 文章编号： | 0253-231X(2002)03-0348-03 |
| 修稿时间： | 2001-12-24 |
3-DIMENSIONAL MODELING OF A LASER FULL-PENETRATION WELDING |
| |
| YE Xiao-Hu CHEN Xi. 3-DIMENSIONAL MODELING OF A LASER FULL-PENETRATION WELDING[J]. Journal of Engineering Thermophysics, 2002, 23(3): 348-350 |
| |
| Authors: | YE Xiao-Hu CHEN Xi |
| |
| Abstract: | Three-dimensional modeling results are presented concerning the melt flow and heat transfer in a laser full-penetration welding. The effect of Marangoni convection (besides the welding speed) on welding characteristics has been included in the modeling. Comparison of the 3-dimensional modeling results with 2-dimensional ones shows that Marangoni convection plays a critical role and thus can not be ignored. A method is described concerning how to use the modeling results to estimate the keyhole size or predict the welding energy efficiency |
| |
| Keywords: | laser full-penetration welding 3D numerical simulation Marangoni convection |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
