焊接温度场的分析是焊接研究的基础,多丝埋弧焊焊接温度场模拟的难点在于热流密度的计算和加载。在考虑了焊丝偏转的情况下,采用双椭球热源模型,并应用叠加原理,使用APDL（ANSYS Parameter Design Language）完成移动热源热流密度加载计算。在计算程序中采用标量参数而不用数组,保证其在一次循环中完成计算工作,从而避免了大量数值存储、调用、循环造成的计算量过大。通过三丝埋弧焊直缝管焊接温度场计算和焊缝形状对照结果表明：该方法的计算精度能够达到预计的精度,可以用于多丝埋弧焊焊接温度场的计算。
The difficulty on simulation of multi-wires submerged arc welding（SAW） temperature field is loading and calculation of heat-flow density.Under condition of arc deflection,the double ellipsoid heat source model,superposition principle and ANSYS parameter design language（APDL） were employed in the loading and calculation for the moving heat-flow density.In the calculation program,the scalar parameters instead of array were employed,which ensures completion for the calculation in one cycle,and avoids the problem of excessive computation by the array storage,recall and extensive in the loops.The results of calculation and tested weld pool shape show that the computational accuracy gets higher level,which can be applied to the thermal calculation and loading of temperature field for multi-wires SAW.
参考文献
| [1] | 唐子谋,应保胜,杨秀芝,瞿小冀.基于ANSYS双丝移动热源加载算法的设计研究[J].热加工工艺,2010(07):130-133,137. |
| [2] | 刘川,张建勋,张林杰.基于焊缝形状的二维焊接温度场模拟热源模型[J].材料热处理学报,2008(02):177-180. |
| [3] | 汪建华.焊接数值模拟技术及其应用[M].上海:上海交通大学出版社,2003 |
| [4] | Goldak J;Chakravarti A;Bibby M .A new finite model for welding heat source[J].Metallurgical and Materials Transactions B:Process Metallurgy and Materials Processing Science,1984,15(02):299-305. |
| [5] | 郭晓凯,李培麟,陈俊梅,陆皓.加速步长法反演多丝埋弧焊双椭球热源模型参数[J].焊接学报,2009(02):53-56. |
| [6] | Meng QG;Fang HY;Yang JG;Ji SD .Analysis of temperature and stress field in Al alloy's twin wire welding[J].Theoretical and Applied Fracture Mechanics,2005(2):178-186. |
| [7] | 董克权,刘超英,肖奇军.双丝焊温度场仿真的热源模型研究[J].热加工工艺,2006(03):49-52,60. |
| [8] | 杨秀芝,余圣甫,姚润钢.双丝焊温度场算法的程序优化设计[J].焊接学报,2010(10):53-56. |
| [9] | 杨立军.材料连接设备及工艺[M].北京:机械工业出版社,2008 |
| [10] | Pavelic V;Tanbakuch R;Auyehara O .Experimental and computed temperature historips in gas tungsten arc welding of thin plates[J].Welding Journal-Research Supplement,1969,48(07):295-305. |
| [11] | 张华;潘际銮 .基于二维焊接温度场检测的三维温度场计算机模拟[J].焊接学报,1999,20(04):226-232. |
| [12] | 莫春立,于少飞,钱百年,国旭明.焊接热源计算模式的研究进展[J].焊接学报,2001(03):93-96. |
| [13] | 方洪渊.焊接结构学[M].北京:机械工业出版社,2010 |
| [14] | 陈小伟,肖福仁,廖波,王旭,张立英.基于ANSYS的焊接熔池传热速度对温度场影响的数值模拟[J].热加工工艺,2006(07):38-40. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%