On the Assembly of a Hot-Fit Elastic-Viscoplastic Disk with a Non-Circular Inclusion

Abstract

The solution of a non-one-dimensional boundary value problem of the theory of plane temperature stresses is used to calculate the level and distribution of temperature stresses at each time point during the process of performing the technological operation of assembling a composite disk by hot fitting, when the enclosed assembly part is different from a circular plate. Residual stresses in the assembly elements and the resulting interference fit in it after its cooling to room temperature are calculated. Current and residual stresses are calculated depending on the preliminary heating of the enclosing ring, the thermomechanical properties of the mating parts and their initial geometry. The yield strengths of the elastic-viscoplastic elements of the assembly are assumed to be essentially dependent on the local temperature. Attention is drawn to the need to exclude singularity when setting boundary conditions on the mating surfaces of the assembly parts.