Edge fixing effect on the life of a vacuum chamber thin spherical cover subjected to creep damage
Source abstract
Abstract
Within framework of the numerical studies of creep resource of a thin spherical cover of a vacuum chamber, we present mathematical formulation and the calculation method for the solution of the initial boundary value problems of the creep theory of thin shells with account of the damage accumulation process of the material. The effect of edge fixing along the normal and tangential lines to the median surface, as well as angular edge fixings, on the cover life in creep are studied under atmospheric pressure creep conditions. The calculation data obtained made it possible to determine the dependence between the cover life in creep and its edge fixing conditions: this effect is strong by the latent fracture time and weak by the allowable deflection values.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Structural mechanics and materials · Heat Transfer and Mathematical Modeling · Educational Methods and Teacher Development
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References (9)
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1. Yu. N. Rabotnov, Creep in Structural Elements [in Russian], Nauka, Moscow (1966).
2. A. V. Burlakov, G. I. L’vov, and O. K. Morachkovskii, Creep of Thin Shells [in Russian], Vyshcha Shkola, Kharkov University Publishing House, Kharkov (1977).
3. A. L. Gol’denveiser, Theory of Elastic Thin Shells [in Russian], Nauka, Moscow (1976).
4. A. F. Getman, Service Life of NPP Pressure Vessels and Pipelines [in Russian], Énergoatomizdat, Moscow (1976).
5. C. A. J. Fletcher, Computational Galerkin Methods, Springer-Verlag, Berlin–Heidelberg–New York–Tokyo (1984).10.1007/978-3-642-85949-6 ↗
6. O. K. Morachkovskii and Yu. V. Romashov, “Solution of initial boundary-value problems in the theory of creep for getting damaged bodies using the Bubnov–Galerkin method,” Teor. Prikl. Mekh., Issue 42, 23–28 (2006).
7. V. L. Rvachev, Theory of R-Functions and Some of Its Applications [in Russian], Naukova Dumka, Kiev (1982).
8. G. N. Lance, Numerical Methods for High-Speed Computers, Iliffe, London (1960).
9. V. N. Konkin and O. K. Morachkovskii, “Creep and long-term strength of light alloys with anisotropic properties,” Strength Mater., 19, No. 5, 626–631 (1987).10.1007/BF01524293 ↗