Abstract
The effect of cryogenic and elevated temperatures on the nonlinear straining processes of the oblate hemi-ellipsoidal shells with a clamped edge under external axisymmetric pressure has been numerically simulated. Herewith the limit loads buckling have been determined. Shells with different wall thickness have been considered. The analysis was via the linearization and orthogonal sweep methods, which allowed for both material and geometrical non-linearity. The temperature dependence of the material characteristics has been taken into account. It has been found that the largest critical loads for all the shells under considerations are observed at cryogenic temperatures and its values decrease considerably at elevated temperatures.
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Moiseeva, V.E., Skvortsova, Z.V. Stress-Strain State Analysis of Oblate Ellipsoidal Shells under External Pressure Loading and Temperature. Lobachevskii J Math 42, 2179–2185 (2021). https://doi.org/10.1134/S1995080221090195
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DOI: https://doi.org/10.1134/S1995080221090195