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The presented paper deals with the solution of rolling contact problem. A virtual model was created in Abaqus FEA software. The boundary conditions and contact forces were subsequently added. The results obtained after the simulation were compared with data obtained by experimental measurements, which were performed on the test stand ELSPO used in theoretical and technological center for plastometer construction materials for experimental analyzes and tests in terms of rolling contact of solids. The FEM simulation and experiment observed the size of the contact pressure, plastic deformation and the width of the track, which was the site of contact.

Diamond-like carbon (DLC) is being advanced as an excellent surface modification technology for a growing number of applications because of its low friction coefficient and excellent wear resistance. Due to the excellent characteristics of certain mechanical elements, such as a bearing, high levels of functionality are expected. Unfortunately, it is difficult to take full advantage of such high functionality because of insufficient endurance under high-pressure operating conditions. In order to make use of DLC as a bearing surface coating, the mechanism of DLC delamination under high-pressure conditions needs to be clarified. This paper discusses the mechanism of delamination of the intermediate layer of a DLC coating on a bearing in a test rig and by numerical simulation using FEM analysis. Test results revealed that the smaller the Young's modulus value of the intermediate layer (a factor affecting durability) of the DLC coating, the greater the resistance to delamination.