The paper presents the results of 3D modeling the process of abrasive waterjet cutting of structural carbon and stainless steel workpiece. The Johnson-Cook model is selected as a material model. Distributions of stress fields in the cutting zone are obtained, as well as the dependences of depth of cut on jet traverse rate at jet velocities of 400 ... 700 m / s and dependences of cutting force on jet velocity at jet traverse rates of 100 ... 400 mm / min.

The paper presents the finite-element modeling results of classifying diamond microgrit grains, using a rotary type separator in software ANSYS Fluent. The authors obtained the following results: distribution of air flow velocities, grain motion trajectories in the liquid film and in the air when ejecting from liquid, depending on their size and shape for synthetic diamond powder grit size80/63.

The article presents the results of 2D and 3D formulation finite element analysis of glass surface scratching process using single abrasive grain. Johnson-Holmquist model JH-2 was chosen to describe the brittle behavior of the glass material. The cracked layer depth for a given depth penetration of grain and scratching speed were obtained.