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首页> 外文期刊>International Journal of Solids and Structures >Analytical solution for the general mechanochemical corrosion of an ideal elastic-plastic thick-walled tube under pressure
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Analytical solution for the general mechanochemical corrosion of an ideal elastic-plastic thick-walled tube under pressure

机译：理想弹塑性厚壁管在压力下的一般机械化学腐蚀的解析解

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摘要

The paper presents analytical solutions for the equal-rate mechanochemical wear of an ideal elastic-plastic thick-walled cylindrical tube subjected to any combination of internal and external pressure. The rates of corrosion at the inner and outer surfaces are supposed to be proportional to the equivalent tensile stress at the surface involved when it exceeds a given threshold. Furthermore, the corrosion rate can decay exponentially with time. The obtained solutions allow to assess the time of the initial yielding at the bore of the tube and the time of fully plastic yielding. Calculations showed that the time of plastic-zone propagation throughout the tube wall can be much greater than the length of the pure elastic stage. The proposed analytical solutions are to be used for design purposes and as benchmark solutions for numerical analysis.
机译：本文提出了一种理想的弹塑性厚壁圆筒管在内部和外部压力的任意组合下均等速率机械化学磨损的分析解决方案。当超过给定阈值时，内表面和外表面的腐蚀速率应与所涉及表面的等效拉应力成比例。此外，腐蚀速率会随着时间呈指数下降。获得的解决方案可以评估在管孔处的初始屈服时间和完全塑性屈服的时间。计算表明，塑料区在整个管壁中传播的时间可能比纯弹性阶段的长度长得多。建议的分析解决方案将用于设计目的，并用作数值分析的基准解决方案。

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