• Laser and Particle Beams
  • Vol. 2022, Issue 1, 2455226 (2022)
Yiwei Dong1, Qianwen Ye1, Qi Li2, Xiang Guo1, Saitao Zhang1, and Naixian Hou3
Author Affiliations
  • 1School of Aerospace Xiamen University Xiamen 361005 Fujian Province China
  • 2ENN Energy Power Technology (Shanghai) Co., Ltd Shanghai 201306 China
  • 3AECC Commercial Aircraft Engine Co., Ltd Shanghai 200241 China
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    DOI: 10.1155/2022/2455226 Cite this Article
    Yiwei Dong, Qianwen Ye, Qi Li, Xiang Guo, Saitao Zhang, Naixian Hou. Numerical Simulation and Validation of Multiscale 3D Laser Spiral Machining of Microholes[J]. Laser and Particle Beams, 2022, 2022(1): 2455226 Copy Citation Text show less

    Abstract

    Femtosecond laser ablation is widely applied in high-precision machining of microholes in aeroengine turbine blades. To further explore the mechanism of action during the laser processing of microholes, numerical simulations were performed on the basis of a molecular dynamics (MD) method coupled with a two-temperature model (TTM). Laser irradiation on the surface of copper for different femtosecond-laser processing parameters is investigated in this work. Through the femtosecond-laser single-pulse central ablation simulation model, the laser energy flux density in a Gaussian laser spot range was discretized and analyzed to calculate the ablation depth at multiple points separately. The cross-sectional morphology of the femtosecond-laser single-pulse ablation pits was approximated and fitted. Finally, a 3D simulation model of the whole process of multiscale femtosecond-laser spiral processing microholes was established by superimposing multipulse femtosecond-laser spiral trajectories. This provides a theoretical basis for analyzing the evolution of geometric parameters and morphological characteristics of the hole during machining with specific laser and process parameters.
    Yiwei Dong, Qianwen Ye, Qi Li, Xiang Guo, Saitao Zhang, Naixian Hou. Numerical Simulation and Validation of Multiscale 3D Laser Spiral Machining of Microholes[J]. Laser and Particle Beams, 2022, 2022(1): 2455226
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