Wpływ parametrów obciążeń cyklicznych na przebieg deformacji wskutek obciążeń monotonicznie narastających w kierunku ortogonalnym

The paper presents experimental results for PA7 aluminium alloy subjected to monotonic deformation concucted simultaneously with cyclic loading. An influance of strain amplitude, frequency and shape of cyclic loading signal on characteristics under monotonic loading is studied. In analysis the yield surface concept is also applied to identify whether softening effect during cyclic loading observed has the pernament character.