The paper presents a theoretical and experimental study on the connection between fatigue
resistance and tensile strength for a copper specimen. We determined the tensile strength of the copper specimen
and showed that fatigue resistance depends on it. The results obtained both practically and by simulation are
necessary in plastic deformation processes. In order to confirm the link between fatigue resistance and tensile
strength, it is necessary to carry out such practical experiments as well as simulations and modeling with the help of
computer technology.