Numerical analysis of two-dimensional welding process using particle method
Numerical analysis of two-dimensional welding process using particle method
复制标题
二维焊接过程的粒子法数值分析
DOI：
10.1007/s40194-015-0270-z
复制
发表时间：
2015
影响因子：
2.1
通讯作者：
S. Koshizuka
中科院分区：
文献类型：
--
作者：
S. Saso;M. Mouri;Manabu Tanaka;S. Koshizuka
近年来，许多结构都是通过焊接来制造的。另一方面，使用新材料来改善结构的性能。然而，新材料的焊接是困难的，很难预测焊接的最佳条件。希望发展一种数值分析方法来预测新材料的焊接条件。焊接电弧可以通过一些网格方法计算。但由于焊接熔池和熔深的表面形状在外力作用下会发生剧烈变形，用网格法计算熔池表面形状比较困难。移动粒子半隐式（MPS）方法是一种易于计算曲面形状的数值方法。该方法适用于大变形的计算，适合于焊接过程的数值分析.在本研究中，粒子模拟模型的开发。利用这些模型对焊接熔池中的对流进行了分析。计算中将Marangoni力向低温方向作用。然后，计算的焊缝熔深变得宽而浅。另一方面，在计算中，Marangoni力向高温侧作用。计算的穿透变得窄而深。
In recent years, many structures were made by welding. On the other hand, new materials are used to improve the performance of the structure. However, the welding of a new material is difficult and it is difficult to predict the best condition of welding. It is hoped to develop a numerical analysis method to predict welding condition of a new material. The welding arc can be calculated by some grid method. But it is difficult to calculate the surface shape of welding pool by grid method because the surface shape of welding pool and weld penetration is deformed violently by some force. Moving particle semi-implicit (MPS) method is the numerical method which can be applied because the shape of surface is calculated easily. This method is good at calculation of large deformation and matches numerical analysis of welding process. In the present study, a particle simulation model is developed. The convection in welding pool was analyzed using these models. The Marangoni force is worked toward low temperature side in calculation. Then, the calculated weld penetration became wide and shallow. On the other hand, in calculation, the Marangoni force is worked toward high temperature side. The calculated penetration becomes narrow and deep.
影响因子：
1.2
作者：
Koshizuka, S;Oka, Y
通讯作者：
Oka, Y