建立了等离子弧焊接熔池传热、流动和相变的三维数学模型,基于小孔动态演变过程与热源模型的相互耦合作用,研究了焊接熔池内传热和流动的发展过程.开发出随小孔深度动态变化的体积热源模型,上部采用Gauss平面热源,下部采用耦合小孔增长的动态锥体热源.应用体积流函数(VOF)方法追踪小孔的形状尺寸,并将小孔深度作为热源高度参数调控热源分布,从而实现热源模型与小孔变化的动态耦合,获得等离子弧焊接熔池温度场、流场和小孔的动态演变规律.进行了等离子弧焊接的实验测试,验证了焊件横断面熔池形状尺寸和底部小孔的穿孔形状尺寸.
参考文献
[1] | Lucas W.Proc 8th Int Welding Symposium,Osaka:Japan Welding Society,2008:189 |
[2] | Metcalfe J C,Quigley M B C.Weld J,1975; 54:99-s |
[3] | Hsu Y F,Rubinsky B.Int J Heat Mass Transfer,1988;31:1409 |
[4] | Keanini R G,Rubinsky B.Int J Heat Mass Transfer,1993;36:3283 |
[5] | Nehad A K.Int Commun Heat Mass Transfer,1995; 22:779 |
[6] | Wu C S,Wang H G,Zhang Y M.Weld J,2006; 85:284-s |
[7] | Wu C S,Wang H G,Zhang M X.Acta Metall Sin,2006;42:311(武传松,王怀刚,张明贤.金属学报,2006; 42:311) |
[8] | Wu C S,Hu Q X,Gao J Q.Comput Mater Sci,2009; 46:167 |
[9] | Sun J H,Wu C S,Qin G L.Acta Metall Sin,2011; 47:1061(孙俊华,武传松,秦国梁.金属学报,2011; 47:1061) |
[10] | Li Y,Feng Y H,Zhang X X,Wu C S.Int JTherm Sci,2013; 64:93 |
[11] | Fan H G,Kovacevic R.J Phys,1999; 32D:2902 |
[12] | Zhang T,Wu C S,Feng Y H.Numer Heat Transfer,2011;60A:685 |
[13] | Zhang T,Wu C S,Chen M A.Acta Metall Sin,2012; 48:1025(张涛,武传松,陈茂爱.金属学报,2012; 48:1025) |
[14] | Wu C S,Zhang T,Feng Y H.Int J Heat Fluid Flow,2013;40:186 |
[15] | Wang X J,Wu C S,Chen M A.Acta Metall Sin,2010; 46:984(王小杰,武传松,陈茂爱.金属学报,2010; 46:984) |
[16] | Li T Q,Wu C S,Feng Y H,Zheng L C.IntJ Heat Fluid Flow,2012; 34:117 |
[17] | Huo Y S,Wu C S,Chen M A.Acta Metall Sin,2011; 47:706(霍玉双,武传松,陈茂爱.金属学报,2011; 47:706) |
[18] | Sun J H,Wu C S,Feng Y H.Int JTherm Sci,2011; 50:1664 |
[19] | Jia C B,Wu C S,Zhang Y M.Trans Nonferrous Met Soc China,2009; 19:341 |
[20] | Hirt C W,Nichols B D.JComput Phys,1981; 39:201 |
[21] | Huo Y H,Wu C S.China Weld,2009; 18:12 |
[22] | Sahoo P,Debroy T,McNallan M.Metall Mater Trans,1988; 19B:483 |
[23] | Wu C S.Welding Thermal Processes and Weld Pool Behaviors.Beijing:China Machine Press,2008:79(武传松.焊接热过程与熔池形态.北京:机械工业出版社,2008:79) |
[24] | Issa R I.J Comptut Phys,1986; 62:40 |
[25] | Ubbink O.PhD Dissertation,London:Imperial College of Science,1997 |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%