Geodesic
Optimization of laser processing of diamonds
Problemy fiziki, matematiki i tehniki, no. 4 (2022), pp. 30-36.

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Using the genetic algorithm MOGA of the ANSYS Workbench program, the parameters of laser cutting of diamonds were optimized. The finite element calculation of temperatures and thermoelastic stresses was performed using the APDL programming language. Using a face-centered version of the central compositional plan of the experiment, a regression model of laser cutting of diamonds was constructed. Cutting speed, laser beam radius, and laser power density were used as variable factors. The maximum temperatures and thermoelastic stresses in the laser treatment zone were used as responses. An assessment of the influence of processing parameters on the maximum temperatures and voltages generated by laser radiation showed that the main factor is the power density of laser radiation. Optimization of laser cutting of diamonds was carried out for two options for setting the problem: according to the criterion of minimum thermoelastic stresses and according to the criteria of minimum thermoelastic stresses and maximum processing speed. The parameters obtained as a result of optimization and the parameters obtained as a result of finite element modeling are compared. The maximum relative error of the results obtained using the MOGA algorithm did not exceed 9% when determining temperatures and 15% when determining thermoelastic stresses. As a result of the simulation, the processing parameters were determined, the use of which will increase the productivity and reliability of laser cutting of diamonds.
Keywords: laser cutting, diamond, ANSYS.
Mots-clés : MOGA 
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V. A. Emelyanov; E. B. Shershnev; Yu. V. Nikitjuk; S. I. Sokolov; I. Y. Aushev. Optimization of laser processing of diamonds. Problemy fiziki, matematiki i tehniki, no. 4 (2022), pp. 30-36. http://geodesic.mathdoc.fr/item/PFMT_2022_4_a5/

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