光滑和缺口V试样断裂过程的实验-数值分析

IF 1.9 Q3 ENGINEERING, INDUSTRIAL
Grzegorz Świt, Ihor Dzioba, Małgorzata Ulewicz, Sebastian Lipiec, Anna Adamczak-Bugno, Aleksandra Krampikowska
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引用次数: 0

摘要

摘要本文介绍了从输气管道中抽取的光滑和v形缺口试件进行单轴拉伸的质量试验结果。v形缺口的引入引入了最大收缩面附近应力和应变分量场的变化,从而导致它们通过不同的机制破坏。该过程包括实施质量管理实践,例如使用ABAQUS对试件的加载进行数值模拟和模拟。在这些计算中使用的材料模型被定义和验证,以确保质量控制。在数值计算之后,生成了应力和应变分量场图,有助于对试件的质量进行评估。结果表明,光滑试样的质量管理过程确定了失效的开始主要是由于最大收缩平面中心区域的正应力分量。相比之下,在v形缺口试样中,质量管理工作表明,破坏是由切向应力分量引起的,破坏是通过剪切机制进行的。这些结果对于开发一种主要基于声发射信号分析的质量驱动方法来监测天然气网络管道的运行安全性具有重要价值。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Experimental-numerical analysis of the fracture process in smooth and notched V specimens
Abstract This paper presents the outcomes of quality tests conducted on specimens, both smooth and V-notched, subjected to uniaxial tension, which were extracted from a gas transport pipeline. The introduction of the V-notch introduced variations in the stress and strain component fields near the plane of maximum constriction, consequently leading to their failure through different mechanisms. The process included the implementation of quality management practices such as numerical modeling and simulation of the loading of the specimens using ABAQUS. The material model employed in these calculations was defined and verified to ensure quality control. Subsequent to the numerical calculations, maps of the stress and strain component fields were generated, contributing to the quality assessment of the specimens. It was determined that the quality management process for the smooth specimen identifies the initiation of failure primarily due to the normal stress component in the central region of the plane with the largest constriction. In contrast, in the V-notched specimen, quality management efforts revealed that failure initiation occurs due to the tangential stress component, and failure proceeds through the shear mechanism. These results are valuable in developing a quality-driven methodology for monitoring the operational safety of gas network pipelines, primarily based on the analysis of acoustic emission signals.
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来源期刊
Production Engineering Archives
Production Engineering Archives Engineering-Industrial and Manufacturing Engineering
CiteScore
6.10
自引率
13.00%
发文量
50
审稿时长
6 weeks
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