On local strength of a spherical vessel with pits distributed along the equator

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Published Dec 21, 2022
DOI https://doi.org/10.3221/IGF-ESIS.63.08

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Daria Okulova
Saint Petersburg State University, St.Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
Liana Almazova
Saint Petersburg State University, St.Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
https://orcid.org/0000-0001-8695-3598 Olga Sedova
Saint Petersburg State University, St.Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
Yulia Pronina
Saint Petersburg State University, St.Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg, 199034 Russia
https://orcid.org/0000-0003-4978-6238

Abstract

The effect of multiple shallow corrosion pits on the strength of a spherical vessel subjected to internal pressure is studied. The pits are considered both randomly and evenly distributed along the equator on the outer surface of the vessel. The dependencies of the stress concentration factor on the number of the pits are compared for linearly elastic and elastic-plastic material with hardening. The behavior of the vessels made of elastic and elastoplastic materials turned out to be qualitatively different. The approximation of periodic pits arrangement is discussed.

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    Issue
    Vol. 17 No. 63 (2023): January 2023
    Section
    SI: IGF26 - 26th International Conference on Fracture and Structural Integrity

    How to Cite

    Okulova, D., Almazova, L., Sedova, O., & Pronina, Y. (2022). On local strength of a spherical vessel with pits distributed along the equator. Frattura Ed Integrità Strutturale, 17(63), 70–80. https://doi.org/10.3221/IGF-ESIS.63.08
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