Numerical Simulation of Joining Process in a TIG Welding System Using Incompressible SPH Method
Numerical Simulation of Joining Process in a TIG Welding System Using Incompressible SPH Method
复制标题
使用不可压缩 SPH 方法对 TIG 焊接系统连接过程进行数值模拟
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
S. Masaya
中科院分区：
文献类型：
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作者：
Ito Masumi;N. Yu;Izawa Seiichiro;F. Yu;S. Masaya
焊接过程的SPH模拟是针对TIG焊接进行的，考虑了阳极金属的熔化和凝固、液体的自由表面运动以及四种主要的流动驱动力：表面张力梯度（马兰戈尼效应）、液体表面上的气体阻力、浮力和电磁力（洛伦兹力）。计算了两块金属的焊接过程，包括连接两块金属之间差距的熔池的动态形成。材料的表面张力对温度的依赖性的差异导致熔池熔深的显着差异。这些结果表明，这种粒子方法在电弧焊接模拟的有效性。
An SPH simulation of a welding process is performed for TIG welding, taking account the melting and solidification of the anode metal, the free surface movement of the liquid, and the four dominant flow-driving forces; gradient of surface tension (Marangoni effect), gas drag on the liquid surface, buoyancy, and electromagnetic force (Lorentz force). The process of welding two metal blocks is computed, including the dynamic formation of weld pool which joins the gap between the blocks. The difference of material’s surface tension dependency to temperature causes a significant difference in the weld pool penetration. These results show the usefulness of this particle method in arc welding simulations.