Abstract
A method for creating a rivet connection using nitrogen cooling of rivets is considered. A rivet, cooled to a temperature of -196 C, is placed in a cylindrical hole in the plates at room temperature. When heated to room temperature, the rivet undergoes a thermal all-round expansion and creates a tight fit. The finite element method solves the contact termal-stress problem for such a connection in the COMSOL MULTIPHYSICS and APM Winmachine software complexes. The problem is solved in a three-dimensional statement. The first stage is the temperature distribution in the rivet-plate system. The resulting temperature field is used as a parameter at the second stage when solving the stress problem. The fields of residual stresses in the plate and rivet are obtained. It is shown that plastic deformations occur in a small part of one of the connected plates. Recommendations for calculating the strength of such compounds are given.
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