Drilling is one of the main processes of materials machining by cutting. Drilling makes it possible to obtain holes of various sizes in a wide variety of metals, alloys, non-metallic materials, composites, etc.

Defects can occur during drilling, e.g. hole deviation from roundness, burrs, delamination, etc.

LS-DYNA allows to study the machining process in detail and identify what causes formation of defects.

The program allows to obtain data on the stress-strain state, power parameters of the process, temperature in areas that are of interest.

Exact parameters of the material, including dependences on the speed and temperature, and precise parameters of destruction are entered in LS-DYNA.

Johnson–Cook model is often used for these purposes (No. 15 in LS-DYNA material models).

Various methods can be used to simulate the drilling process in LS-DYNA: Lagrange, ALE/Euler, SPH, EFG (by Galerkin).

Simulation in LS-DYNA allows to study delamination processes in detail when drilling composites (the program contains a lot of different models of composite materials).

Simulation of drilling at different rotation and drill feed rates allows to determine the most efficient parameters that ensure high processing speed and minimum hole defects.