Stan naprężenia przy niesymetrycznym rozciąganiu osiowym materiałów perforowanych

The aim of the paper is to determine elastoplastic stress state in the specimens of anisotropic materials loaded in the direction which does not coincide with the symmetry axes of the material structure. The anisotropic material was modelled by means of the perforated materials with regular triangular and square penetration patterns. The tests enabled determining the stress distributions in characteristic sections of the material structure. The stress determined were homogenized along the pitch of the hole pattern and the stresses disturbances of the uniaxial stress state for off-axis tension of the specimens were estimated.