ABSTRACT
Paper presents a numerical model, developed to capture ultimate tensile resistance of steel angles connected by one leg using single row of bolts, based on plastic initiation and progression of fracture. The porous metal plasticity was implemented using Gurson-Tvergaard-Needelman material model. Due to such approach, damage of the material microstructure was taken into account. Hierarchical validation of computational model was carried out on the base of own experimental tests. The paper describes the impact of individual geometrical parameters on the global behavior of the steel angle joints and their resistance. Eighty-eight numerical models and experimentally tested specimens gave insight into stress distribution, mechanism of failure and ultimate resistance. Based on these results three different failure modes were distinguished: block tearing, net section tearing and mixed mode.
