FORMATION OF A MODEL FOR DETERMINING STRESSES IN METAL STRUCTURES UNDER THE INFLUENCE OF HYDROGEN CONCENTRATION

Abstract

In modern industrial conditions, the issue of accurately predicting the operational resources of metal systems, in particular their durability and reliability, is becoming particularly acute. This is due to the complex combination of material corrosion degradation and constant mechanical stress. To date, the mechanisms of the relationship between hydrogen saturation and stress redistribution in metals have been studied fragmentarily. The process of hydrogen absorption causes deformation of the body structure, which manifests itself in a change in its linear parameters and total volume. Under appropriate conditions, such volumetric transformations become a source of internal forces. This paper considers a model in which the mutual influence of hydrogen atoms is considered negligible. The key objective of the study is to determine the parameters of the stress-strain state of an object resulting from the diffusion and accumulation of hydrogen in its structure.