焊管2025，Vol.48Issue(12)：42-48,7.DOI:10.19291/j.cnki.1001-3938.2025.12.006
直连型特殊螺纹接头连接强度理论与试验研究
Theoretical and Experimental Study on Connection Strength of Direct-connected Special Threaded Joints
吴丹 1熊茂县 1谢俊峰 1蒙毅升 2姬丙寅 2史交齐2
作者信息
- 1. 衡阳华菱钢管有限公司,湖南 衡阳 421001
- 2. 西安三维应力工程技术有限公司,西安 710075
- 折叠
摘要
Abstract
In order to ensure the safety of direct-connected connection special threaded joints,the connection strength of the joint is systematically analyzed using three methods:theoretical calculation,finite element simulation,and physical testing.Research shows that the strength of joint connections is determined by the minimum strength of the dangerous section of the pipe body,external thread,and internal thread,and the internal thread is determined as the dangerous section.The failure process of the joint under tensile conditions was numerically verified through finite element simulation,and the results showed that the error between the connection strength and the theoretical calculation value was only 3.4%,fully verifying the rationality of the theoretical model.Finally,the fullt-scale physical tensile test was conducted for verification,and the test failure load was consistent with the theoretical calculation value,and the failure characteristics were completely consistent with the theoretical analysis and finite element simulation prediction.The results can provide theoretical and experimental support for the structural optimization design,precise performance prediction,and practical engineering application of direct connected special threaded joints.关键词
直连型/特殊螺纹接头/连接强度/解析计算方法/有限元模拟Key words
directt-connected/special threaded joints/connection strength/analytical calculation methods/finite element simulation分类
能源科技引用本文复制引用
吴丹,熊茂县,谢俊峰,蒙毅升,姬丙寅,史交齐..直连型特殊螺纹接头连接强度理论与试验研究[J].焊管,2025,48(12):42-48,7.
