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TIG焊接熔透熔池的数学模型
引用本文:曹振宁,武传松,吴林.TIG焊接熔透熔池的数学模型[J].焊接学报,1996,17(1):62-70.
作者姓名:曹振宁  武传松  吴林
作者单位:济南山东工业大学,哈尔滨工业大学
摘    要:根据流体力学理论和变分法原理,推导出了熔透情况下TIG焊接熔池上表面和下表面变形的方程,建立了TIG焊接熔透熔池流场与热场的数值分析模型,采用非正交贴体曲线坐标系成功地处理了熔池表面的曲面边界,将熔透情况下熔池上下表面变形的计算,与熔池流场与热场的计算相结合,不仅较好地计算出熔池的流场与热场,同时求得了焊接熔池的上下表面变形。焊接工艺试验表明,根据该模型计算的焊缝成形与试验测试结果吻合程度良好。

关 键 词:熔透熔池  传热  数学模型  焊接  TIG焊
收稿时间:1994/6/13 0:00:00
修稿时间:1995/10/20 0:00:00

Mathematical Modeling of TIG Molten Pool with Full-penetration
Cao Zhenning,Wu Chuansong and Wu Lin.Mathematical Modeling of TIG Molten Pool with Full-penetration[J].Transactions of The China Welding Institution,1996,17(1):62-70.
Authors:Cao Zhenning  Wu Chuansong and Wu Lin
Affiliation:Shandong University of Technology, Jinan,Harbin Institute of Technology and Harbin Institute of Technology
Abstract:The calculating formulas of top and bottom pool-surface deformation in TIG full-penetration weld pool is developed based on principles of fluid mechanics and variation calculus. A mathematical model has been estabished for the fluid flow and heat transfer in TIG full-penetrated Weld pool.Difficulties associated with irregular shape of the deformed weld pool surface have been sucessfully overcome by calculating the surface deformation together with the fluid flow and heat transfer in weld pools. Data of fluid velocity and temperature distribution in weld pools are obtained, so do that of top and bottom pool-surface deformation. TIG welding experiments show that the predictions of the model have a good agreement with the experimental observation with respect to weld pool shape.
Keywords:s:full-penetration weld pool  pool-surface deformation  fluid flow  heat trasfer  mathematical modeling  
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