Hierarchical validation of FEM models for the needs of rotation capacity determination of steel structure joints

The paper presents results from multistage hierarchical validation of advanced FEM models used to define rotation capacity of steel joints. Validation process has been carried out for different models with various level of complexity. Comparative analysis of the FEM models has been carried out in relation to results obtained in laboratory tests. Developed methodology of the formation of material characteristic is a base for further analysis of advanced models of beam-to-column end-plate connections in the area of forecasting the rotation capacity curve (M-ϕ).