Abstract
Laser beam cutting technology is becoming increasingly popular in various industries. Advantages of this method is a very high cutting speed and a precision of edges of cut elements. Good quality depends on many technological parameters. Numerical prediction of the effect of cutting process parameters on the quality of the surface can be useful for technologists. The work concerns the numerical analysis of the laser cutting process of sheet made of steel. The influence of selected parameters on the energy efficiency of the heat source and the cutting speed are analyzed. Numerical calculations are performed in Abaqus software. Three-dimensional discrete model of the analyzed system is developed. The standard material parameters of austenitic steel changing with the temperature are taken into account. Gauss model describing the distribution of movable heat source of a laser beam power are assumed in the solution algorithms. The influence of various parameters of the laser beam on obtained temperature field and shape of cut zone is estimated on the basis of numerical calculations. The results are compared with the results of the experiment.
Highlights
Large and medium manufacturing facilities use cutting processes in the production
The temperature field in the sheet is numerically determined on the basis of the adopted mathematical and numerical model developed in the Abaqus program
Numerical analysis of thermal phenomena occurring during laser beam cutting process requires reliable process conditions
Summary
Large and medium manufacturing facilities use cutting processes in the production. Currently, one of the most popular methods for cutting of various types of materials is laser beam cutting. Gaussian cylindrical models of heat sources are assumed in numerical calculations due to small differences in the gap width on the upper and lower flat surfaces. This model assumes the form of the source, an equivalent volume of a cylinder of radius ro and a height h of the assumption of a constant value of beam power through the entire depth (h) of penetration of the beam in the material [11]. The obtained results are compared with the experiment, where the comparative criterion is the width of the cut
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