氢腐蚀开始前空心圆柱体的局部应力

IF 0.7 Q4 MECHANICS

Moscow University Mechanics Bulletin Pub Date : 2025-09-22 DOI:10.3103/S0027133025700189

V. V. Nazarov

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引用次数: 0

摘要

建立了钢空心圆筒高温氢腐蚀发生前的应力-应变状态数学模型。考虑了具有圆柱形微孔的截面在其周围产生局部应力时的平面变形。提出了微孔内氢气压力作用下的周向应力与微孔内甲烷压力作用下的周向局部应力之和达到断裂蠕变强度时腐蚀裂纹萌生的判据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Local Stresses in a Hollow Cylinder before the Onset of Hydrogen Corrosion

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Local Stresses in a Hollow Cylinder before the Onset of Hydrogen Corrosion

A mathematical model of the stress-strain state before the onset of high-temperature hydrogen corrosion of a steel hollow cylinder is proposed. Plane deformation of a cross section with cylindrical micropores around which local stresses arise is considered. A criterion is proposed in which the initiation of corrosion cracks is possible when the sum of the circumferential stress under the effect of hydrogen pressure inside the cylinder cavity and the circumferential local stress under the effect of methane pressure inside the micropore reaches the break creep strength.

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来源期刊

Moscow University Mechanics Bulletin MECHANICS-

CiteScore

0.60

自引率

0.00%

发文量

期刊介绍： Moscow University Mechanics Bulletin is the journal of scientific publications, reflecting the most important areas of mechanics at Lomonosov Moscow State University. The journal is dedicated to research in theoretical mechanics, applied mechanics and motion control, hydrodynamics, aeromechanics, gas and wave dynamics, theory of elasticity, theory of elasticity and mechanics of composites.