Review article

The article discusses the main problems of the component method implemented in Eurocode 3 and offers approaches aimed at eliminating the existing shortcomings. The authors investigate the possibility of introducing additional n -linear components that sufficiently accurately describe the behavior of the flange joints for various stages of the stress-strain state of the connection. The key aspects and principles of modeling nodal connections using n -linear components, including the structure of components, methods of their modeling, are determined. The analysis of the performance of the new computational model of the system is carried out, theoretical diagrams of «force-displacement» ( F -δ) of n -linear components and diagrams of «flexing moment-angle of rotation» ( M -φ) for a node with n-linear components are constructed. A numerical experiment on modeling a typical node is carried out and the results obtained are compared with theoretical prerequisites.