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首页> 外文期刊>Lasers in engineering >Finite Element (FE) Prediction of Hole Characteristics and Material Removal Rate for Laser Beam Percussion Drilling of Inconel 718
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Finite Element (FE) Prediction of Hole Characteristics and Material Removal Rate for Laser Beam Percussion Drilling of Inconel 718

机译：Inconel 718激光打孔钻削孔特性和材料去除率的有限元（FE）预测

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摘要

Here we deal with the simulation of laser beam percussion drilling (LBPD) process after development of finite element (FE) model based thermal model incorporating the temperature dependent thermal properties, optical properties, phase change phenomena and effect of change in nozzle stand-off distance. Initially, transient temperature distribution in the thin sheet of Inconel 718 is simulated which is further utilized to predict the hole taper, heat affected zone (HAZ) and material removal rate (MRR). The predicted values of hole taper have been compared with the self conducted experimental values. It is found that the increase of pulse width and peak power increases the hole taper, HAZ and MRR whereas the increase of pulse frequency reduces the hole taper and extent of HAZ but enhances the MRR. It has also been observed that the thickness of sheet play a vital role in determining the quality of a laser drilled hole.
机译：在开发了基于有限元（FE）模型的热模型后，我们将模拟激光束冲击钻孔（LBPD）过程，该模型结合了与温度相关的热特性，光学特性，相变现象以及喷嘴间距变化的影响。最初，模拟Inconel 718薄片中的瞬态温度分布，将其进一步用于预测孔锥度，热影响区（HAZ）和材料去除率（MRR）。孔锥度的预测值已与自导实验值进行了比较。发现脉冲宽度和峰值功率的增加会增加空穴锥度，HAZ和MRR，而脉冲频率的增加会降低空穴锥度和HAZ的程度，但会提高MRR。还已经观察到，板的厚度在确定激光钻孔的质量方面起着至关重要的作用。

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