摘要
为了研究油气管道缺陷参数的交互作用,以长方形缺陷和圆形缺陷油气管道为研究对象,首先考察了缺陷参数如缺陷长度、宽度、深度及半径等对油气管道最大等效应力的影响。其次通过引入响应曲面法,分析不同缺陷参数对油气管道剩余强度的交叉影响,并得到不同交互参数的响应结果图,从而进一步分析缺陷参数间的相互影响。结果表明:对于长方形缺陷,随着缺陷长度、深度和内压的增大,等效应力呈增大趋势,随着缺陷宽度的增大,等效应力呈减小趋势;对于圆形缺陷,随着缺陷直径、深度和内压的增大,等效应力呈增大趋势;对于长方形缺陷,缺陷深度的影响最明显,缺陷宽度和深度两者的交互影响最为显著;对于圆形缺陷,内压的影响程度最大,半径和深度两参数的交互影响最为显著。
In order to study the interaction of defect parameters of oil and gas pipeline,the oil and gas pipeline with rectangular and circular defect was taken as the research object.Firstly,having the effect of defect parameters such as defect length,defect width,defect depth and defect radius on the maximum equivalent stress of oil and gas pipelines investigated;and secondly having the response surface method employed to analyze the cross effects of different defect parameters on the residual strength of oil and gas pipelines so as to obtain the diagram of response results of different interaction parameters for further analyzing the interaction between defect parameters.The results showed that,for rectangular defects,the equivalent stress increases with the increase of defect length,defect depth and internal pressure;the equivalent stress decreases with the increase of defect width;for circular defects,the equivalent stress increases with the increase of defect diameter,defect depth and internal pressure;for rectangular defects,the effect of defect depth is the most obvious and the interaction between the width and depth of defects is the most significant;for circular defects,the influence of internal pressure is the largest and the interaction influence between radius and depth is the most significant.
作者
王战辉
张智芳
马亚军
陈锦中
高勇
WANG Zhan-hui;ZHANG Zhi-fang;MA Ya-jun;CHEN Jin-zhong;GAO Yong(School of Chemistry and Chemical Engineering,Yulin University;Key Laboratory of Low Metamorphic Coal Clean Utilization)
出处
《化工机械》
CAS
2021年第3期416-424,共9页
Chemical Engineering & Machinery
基金
国家自然科学基金项目(21763030)
陕西省创新能力支撑计划项目(2020TD-032)
陕西省教育厅重点科学研究计划(重点实验室)(19JS069)
榆林市2019年科技计划项目(2019-83-7)。
关键词
油气管道
缺陷参数
有限元分析法
响应曲面法
剩余强度
oil and gas pipeline
defect parameter
finite element analysis method
response surface method
residual strength
