[1]李巧珍,程红斐,候彦明,等.含划痕缺陷埋地管道冲击作用下的动力响应行为研究[J].焊管,2022,45(6):1-7.[doi:10.19291/j.cnki.1001-3938.2022.06.001]
　LI Qiaozhen,CHENG Hongfei,HOU Yanming,et al.Study on Dynamic Response Behavior of Buried Pipeline with Scratch Defect Subjected to Impact Loading[J].,2022,45(6):1-7.[doi:10.19291/j.cnki.1001-3938.2022.06.001]
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含划痕缺陷埋地管道冲击作用下的动力响应行为研究()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
45
期数:
2022年第6期
页码:
1-7
栏目:
试验与研究
出版日期:
2022-06-28

文章信息/Info

Title:
Study on Dynamic Response Behavior of Buried Pipeline with Scratch Defect Subjected to Impact Loading
文章编号:
10.19291/j.cnki.1001-3938.2022.06.001
作者:
李巧珍; 程红斐; 候彦明; 罗 敏; 张 强
1. 东北石油大学 机械科学与工程学院，黑龙江 大庆 163318；2. 中石化重型起重运输工程有限责任公司，北京 100029
Author(s):
LI Qiaozhen;  CHENG Hongfei;  HOU Yanming;  LUO Min;  ZHANG Qiang
1. School of Mechanical Science and Engineering, Northeast Petroleum University, Daqing 163318, Heilongjiang, China;2. Sinopec Heavy Lifting and Transportation Engineering Co., Ltd., Beijing 100029, China
关键词:
埋地管道; 划痕; 冲击; 动力学; 影响因素
Keywords:
buried pipeline;  scratch;  impact;  dynamics;  influence factors
分类号:
TE832
DOI:
10.19291/j.cnki.1001-3938.2022.06.001
文献标志码:
A
摘要:
为研究含划痕缺陷管道在冲击载荷作用下的动力响应行为，采用显示动力学分析方法，建立含划痕缺陷埋地管道三维三重非线性动力学分析模型，探讨管内流体压力、落物冲击能、划痕缺陷深度对峰值时刻管道动力响应行为的影响规律。结果表明：在落物的冲击作用下，划痕尖端应力集中现象明显，管道极易首先从该位置处发生失效。当落物冲击能为100 kN·m时，管内流体压力由0.5 MPa增至0.8 MPa，管道等效应力由38.2 MPa降至31.5 MPa，管道变形由4.3 mm降至4.1 mm，流体压力一定程度上可以保护受冲击管道；当管内流体压力为0.6 MPa时，落物冲击能由50 kN·m增至240 kN·m，管道等效应力由26.4 MPa增至61.6 MPa，变形由2.6 mm增至6.7 mm；当落物冲击能为100 kN·m时，管道划痕深度由3 mm增至4.5 mm，管道等效应力由35.8 MPa增至39.1 MPa，而变形基本无变化。该项研究相关分析方法以期为冲击致“划痕+凹陷”复合缺陷管道的失效分析提供理论指导。
Abstract:
In order to study the dynamic response behavior of pipeline with scratch defect under impact loading, a three-dimensional triple nonlinear dynamic response model of the buried pipeline with scratch defect, which subjected to impact loading was established by display dynamic analysis method, and the regular laws of pipeline dynamic response changed with fluid pressure, falling object impact energy and scratch defect depth were discussed respectively. The results show that under the impact loading of falling objects, the stress concentration phenomenon at the tip of scratch defect is obvious, and pipeline is easier to fail firstly from this position. When the impact energy is 100 kN·m, with the increse of fluid pressure from 0.5 MPa to 0.8 MPa, the equivalent stress of pipeline decreases from 38.2 MPa to 31.5 MPa. While the change of pipe deformation decreases from 4.3 mm to 4.1 mm, the fluid pressure could protect the impacted pipeline to some extent. When the fluid pressure is 0.6 MPa, with the increase of impact energy from 50 kN·m to 240 kN·m, the equivalent stress of pipeline increases from 26.4 MPa to 61.6 MPa, and the deformation increases from 2.6 mm to 6.7 mm. When the impact energy is 100 kN·m, with the increse of scratch depth from 3 mm to 4.5 mm, the equivalent stress of pipeline increases from 35.8 MPa to 39.1 MPa and the deformation of pipeline is unchanged basically. The relevant analysis method of this study can provide theoretical guidance for the failure analysis of “scratch + depression” composite defect pipeline subjected to impact loading.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期：2022-01-04作者简介：李巧珍（1985—），女，博士，讲师，主要从事石油石化装备有限元分析研究工作。基金项目： 黑龙江省属本科高校基本科研业务费项目“复合缺陷管道非线性力学分析及失效机理研究”（项目编号2019QNL-37）；黑龙江省自然科学基金项目“液压滚珠整形器整形水平井缩径变形套管机理研究”（项目编号LH2021E011）；黑龙江省自然科学基金项目“储气库注采管柱流致振动与屈曲机理及其调控研究”（项目编号LH2020A001）。
更新日期/Last Update: 2022-06-21