基于有限元法的内部裂纹管道应力分析Stress analysis of internal crack pipeline based on finite element method
黄云;徐建;李云秀;
摘要(Abstract):
以龙铁线油气管道为研究对象,采用有限元方法研究单、双重裂纹的尺寸和位置变化对油气管道应力的影响,并拟合得出相应公式。结果表明:在单裂纹情况下管道受最大应力先随裂纹纵向长度的增加而增加,最终收敛于稳定值,管道最大应力随裂纹深度的增加而急剧增大,呈指数关系;双重裂纹时,当管道最大应力随缺陷深度加深时,最大应力与裂纹深度呈指数关系,且对其应力的影响更明显,管道最大应力与裂纹纵向长度呈二次函数关系。
关键词(KeyWords): 裂纹;最大应力;有限元;油气管道;双重缺陷
基金项目(Foundation): 石油天然气装备教育部重点实验室项目(OGE201702-30)
作者(Author): 黄云;徐建;李云秀;
Email:
DOI: 10.14024/j.cnki.1004-244x.20190314.004
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