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《弯曲载荷下隔水管特殊螺纹接头参数与应力关系研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、2012正第41卷石油矿场机械第7期第6页OILFIELDEQUIPMENT2012,41(7):6~1O文章编号:1001-3482(2012)07—0006—05弯曲载荷下隔水管特殊螺纹接头参数与应力关系研究刘贤玉,于永南,宋作苓,孙建忠(中国石油大学储运与建筑工程学院,山东青岛266555)摘要:针对海洋环境中隔水管存在较大弯曲载荷的情况,采用有限元软件ANSYS对隔水管最易失效的特殊螺纹接头建立了三维接触有限元模型,得到了在弯曲载荷作用下螺纹接头的应力分布。结果表明:最大应力出现在接头本体拉伸侧的第1圈或最后1圈螺纹的根部;接头本体拉伸侧与
2、压缩侧的螺纹根部应力分别与环向角近似成1/2个正弦波函数关系。在此基础上进一步分析了壁厚、螺高、螺距、螺纹圈数和锥度等参数对螺纹处最大等效应力的影响,为隔水管特殊螺纹接头的设计与优化提供了理论依据。关键词:隔水管;弯曲载荷;特殊螺纹;应力;ANSYS中图分类号:TE953文献标识码:AResearchonRelationsofStressandParameterofPremiumThreadedConnectionsonRiserSubjectedtoBendingLoadLIUXian—yu,YUYong—nan,SONGZuo—ling,SUN
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