NUMERICAL SIMULATION OF LASER BEAM MACHINING OF POLYMETHYL METHACRYLATE

Anjum AAKIF, Shaikh ABDULHAFIZ, Ali MD AZHARUDDIN, Husain DILAWAR, Hussain NAVEED, MD AZHAR, Sajid NAEEM, Mohammed SALMAN BAIG

Abstract


Laser beam machining is a thermal based ablation process used for micro milling to create microchannel profiles. In the present work, the single-pass laser cutting process simulation has been investigated in FEM software, considering laser beam as a moving heat source. The main objective of the present investigation is to study the effect of laser parameters on the surface temperature distribution and the nature of gaussian heat source. This paper uses a 2-Dimensional model to analyze the effect of laser beam machining parameters on Polymethyl Methacrylate using COMSOL Multiphysics 5.6. It is also observed that simulated temperature distribution profile follows the same trend as it was analytically developed by previous work for moving heat source. The maximum average temperature attained by the laser beam source is 36435 K. It also noted the temperature degraded rapidly away from the point source of laser beam which leads to bell shaped graph i.e. gaussian distribution at 0.06 time which reduces as the laser beam source moves ahead.

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