A CONSEQUENCE OF POST-IMPACT RADIAL PROFILE SHAPE OF INDENTATION. PART II: A POSSIBLE EXPLANATION

The shape of the radial profile of a rotating disc, is different in the case when a free falling ball collides the disc, presents in the region between the imprint and the periphery of the disc a different shape from the one it has in the absence of contact. Accepting, in accordance with Saint-Venant’s principle that at distances far enough from the region the load is applied, it doesn’t matter the manner of applying the load, under the hypothesis of the linear elastic behaviour of material and using a FEA software, the phenomenon is modelled. There were considered the cases of the rotating disc without impact, the impact of free falling ball with the resting disc and the impact with the rotating disc and for neither one of the situations the material in the vicinity of the disc periphery reaches the plastic deformation domain.