| 施工阶段轴向单纯凹痕管道韧性损伤变化分析 |
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| 引用本文： | 伍颖,王乐,谢彦平,唐娜.施工阶段轴向单纯凹痕管道韧性损伤变化分析[J].机械强度,2019(2):436-441. |
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| 作者姓名： | 伍颖 王乐 谢彦平 唐娜 |
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| 作者单位： | 西南石油大学土木工程与建筑学院;塔里木油田分公司库车油气开发部 |
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| 基金项目： | 国家自然科学基金项目(50974105);国家安全生产监督管理总局(Sichuan-0016-2016AQ);西南石油大学启航计划(2015QHZ024)资助~~ |
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| 摘 要： | 机械损伤会造成管道的即刻或者延迟失效,而凹痕是机械损伤的主要表现形式。针对施工阶段造成的轴向单纯凹痕,基于Oyane韧性断裂准则,利用有限元法进行模拟研究。分析凹痕管道在不同凹痕尺寸、管道尺寸和管道内压的情况下,管道韧性损伤程度的变化情况。得到凹痕深度与管道韧性损伤程度的关系,为施工阶段造成轴向单纯凹痕的油气管道的安全设计提供一定的理论指导依据。
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| 关 键 词： | 施工阶段 轴向单纯凹痕 Oyane韧性断裂准则 凹痕深度 韧性损伤程度 |
DUCTILE DAMAGE CHANGE ANALYSIS OF AXIAL SIMPLE DENTED PIPELINE IN CONSTRUCTION STAGE |
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| WU Ying,WANG Le,XIE YanPing,TANG Na.DUCTILE DAMAGE CHANGE ANALYSIS OF AXIAL SIMPLE DENTED PIPELINE IN CONSTRUCTION STAGE[J].Journal of Mechanical Strength,2019(2):436-441. |
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| Authors: | WU Ying WANG Le XIE YanPing TANG Na |
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| Affiliation: | (Department of Civil Engineering and Architecture,Southwest Petroleum University,Chengdu 610500,China;Kuche oil and Gas Development Department of Tarim Oilfield Branch,Tarim 841000,China) |
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| Abstract: | Mechanical damage can cause immediate or delayed failure of the pipe. The dent is the main form of mechanical damage. According to the Oyane ductile fracture criterion, the finite element method was used to simulate the axial simple dent caused by the construction stage. Analyzed the change of pipeline ductile damage degree in different pit sizes, pipe sizes and pipe pressures, the relationship between the dents depth and the ductile damage degree is obtained, which provides the theoretical basis for the safe design of the oil and gas pipelines with axial indentation during the construction stage. |
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| Keywords: | The construction stage Axial simple dent Oyane ductile fracture criterion Dent depth Toughness damage degree |
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