Elastoplastic Assessment of Limiting Internal Pressure in Thick-Walled Cylinders with Different Tension-Compressive Response

Abstract

Elastoplastic calculation and stress distributions of limiting internal pressure in thick-walled cylinders are examined based on the twin-shear strength criterion. The calculations are especially versatile for quantitative evaluating the intermediate principal stress, different tensile-compression strength, and tension-compression modulus. The calculation results are verified by comparing with other data taken form the literature. Parametric studies were carried out to assess the influence of the strength parameter, radius ratio, tensile-compression strength ratio and tension-compression modulus. The proper choice of determining parameters is shown to be vital for the design of such components. It makes full use of the strength potentialities for thick-walled cylinders due to considering the intermediate principal stress. Limiting internal pressure variations with the radius ratio provide reference for selecting a reasonable wall thickness. The calculations have an important practical value for the optimum design and engineering application of thick-walled cylinders.