Providing Strength Characteristics during Assembly Press Connection with Intermediate Deformable Sleeve

Bearing capacity press connection is an important design and engineering challenge of modern engineering. In the scientific literature there are no studies on strength characteristics of the three-piece pressing compounds containing a plastically deformable element with a variable distribution of mechanical properties. The article presents the calculated curves for determining the optimal distribution of mechanical properties of the height of intermediate deformable sleeve, and said determination offers the bearing capacity of a three-element press connection in the axial direction. The developed mathematical model showed that the bearing capacity is largely dependent on the gradient of mechanical properties of the sleeve in the axial direction, which is confirmed by experimental studies. The results allow assigning the design parameters of the designed compounds and conditions for heat treatment of the deformable sleeve for the desired values of bearing capacity.