# FINITE ELEMENT ANALYSIS OF CHANGING OF STRESS CONDITION CAUSED BY DIAMOND BURNISHING

## DOI:

https://doi.org/10.20998/2078-7405.2024.100.10## Keywords:

finite element modelling, diamond burnishing, surface integrity, plastic deformation## Abstract

The article is aspected to the finite element modelling of stress in subsurface layer of aluminium alloy workpiece during diamond burnishing process. This cold forming process is a simple, cost-effective finishing method that can be used to improve surface integrity and provide compressive residual stress. Available with these, durability and quality enhancement of the components can be reached, but improperly chosen burnishing parameters can distort the efficiency of the plastic deformation process. In order to optimize this, a 2D FEM model is created including the real surface integrity of the workpiece which was measured with AltiSurf 520 surface roughness measuring device. The method is simulated using DEFORM-2D software, corresponding to the numerical values of burnishing parameters implemented in practice as well, thereby allowing a comparative analysis with the results of X-ray diffraction measurement.

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