Three-dimensional numerical simulation during laser processing of CFRP
Three-dimensional numerical simulation during laser processing of CFRP
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DOI：
10.1016/j.apsusc.2017.02.249
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发表时间：
2017-09-30
影响因子：
6.7
通讯作者：
Tsukamoto, Masahiro
中科院分区：
文献类型：
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作者：
Ohkubo, Tomomasa;Sato, Yuji;Tsukamoto, Masahiro
利用OpenFOAM作为有限体积法（FVM）的库，对激光加工碳纤维增强塑料（CFRP）进行了三维数值模拟。虽然对热影响区（HAZ）的形成进行了一些理论或数值研究，但没有研究讨论HAZ是如何产生的，考虑到每种材料去除的时间发展。了解碳纤维和树脂去除速度的差异对提高CFRP切割面质量具有重要意义。通过模拟，我们演示了碳纤维和树脂是如何被烧蚀羽流的热量去除的。研究发现，由于导热系数的差异，碳纤维在燃烧初期的去除速度比树脂快，而树脂由于燃烧温度低，在燃烧后期的去除速度比碳纤维快。这一结果表明，存在最佳的接触时间的激光烧蚀和目标的切口。(C)2017爱思唯尔B.V.保留所有权利。
We performed three-dimensional numerical simulation about laser processing of carbon-fiber-reinforced plastic (CFRP) using OpenFOAM as libraries of finite volume method (FVM). Although a little theoretical or numerical studies about heat affected zone (HAZ) formation were performed, there is no research discussing how HAZ is generated considering time development about removal of each material. It is important to understand difference of removal speed of carbon fiber and resin in order to improve quality of cut surface of CFRP. We demonstrated how the carbon fiber and resin are removed by heat of ablation plume by our simulation. We found that carbon fiber is removed faster than resin at first stage because of the difference of thermal conductivity, and after that, the resin is removed faster because of its low combustion temperature. This result suggests the existence of optimal contacting time of the laser ablation and kerf of the target. (C) 2017 Elsevier B.V. All rights reserved.