О прогнозировании времени до разрушения при ползучести осесимметрично нагруженных полых цилиндров и цилиндрических оболочек

Abstract

The problem of determining the stress-strain state, damageability and long-term strength of hollow cylinders and cylindrical shells, working under creep conditions, is considered. Solutions for shells of varyous thickness, based on the hypothesis of rectilinear element, compared with the 3D solutions for hollow cylinders under axisymmetric loading. The effect of aspect ratio on the accuracy of solutions based on the shell theory is investigated. Prediction approach of time to failure in 3D formulation on the basis of data, obtained by the shell theory and vice versa is elaborated.