关于沿赤道分布凹坑的球形容器的局部强度

IF 1.2 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Frattura ed Integrita Strutturale Pub Date : 2022-12-21 DOI:10.3221/igf-esis.63.08

D.D. Okulova, L. Almazova, O. Sedova, Y. Pronina

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引用次数: 5

摘要

研究了多个浅腐蚀坑对内压作用下球形容器强度的影响。这些凹坑被认为是随机且均匀地分布在船只外表面的赤道上。比较了具有硬化的线弹性和弹塑性材料的应力集中因子对凹坑数量的依赖性。由弹性材料和弹塑性材料制成的容器的性能在性质上有所不同。讨论了周期凹坑排列的近似问题。

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

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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