Evaluation of the Stress-Strain State of a Hollow Spherical Structure of a Casting Metal Mold Loaded with Internal Gas Pressure

Abstract

The thermomechanical loading of a collapsible multilayer spherical thick-walled shell reinforced with an annular hoop is considered. Such structures are used as casting shell molds when implementing the injection-molding method. The shell is loaded with internal pressure and is subject to temperature deformations due to cooling of the outer mold and the hoop. The temperature problem of preheating the mold is solved so that the maximum stresses do not exceed a predetermined value. Distributions of parameters of stress-strain state and displacement in the shell were obtained.