The state of tensions for screws with thread made up through plastic deformation

In experiments which have been carried out it has been noticed that even non-ferrous alloys suffer considerable elastic deformations very close to those of steel. In this work, we present a series of diagrams of evolution for the internal tensions, as a function of the step of the thread, the attach angle of the screw tap and the threading rotation. We also present the state of tension from the thread turn, by computer processing, in different strata