摘要
开发了带尺寸参数偏差的油管螺纹接头参数化有限元自动建模程序,考虑材料非线性和接触表面非线性,应用弹塑性接触有限元法对存在尺寸偏差的油管螺纹接头进行了应力应变分析。并以27/8TBG油管螺纹接头为例,给出了油管在预紧及拉伸载荷工况下接头的应力应变云图及螺牙面的接触应力曲线,分析了外螺纹参数偏差变化时接头应力应变的变化规律。
We develop an automatic modeling program to establish the parameterized finite element model of threaded joints of oil pipes with dimensional deviations. Taking into consideration the material nonlinearity and the contact surface nonlinearity, we analyze the stress and strain of the threaded joints using the elastoplastic contact finite element method. We give the stress and strain contours and the contact stress curves of 27/8TBG threaded joints as an example when they are under pre-stress and tensile force. We also analyze the change of the stress and strain of the threaded joints with parameter deviations of outer threads.
出处
《机械科学与技术》
CSCD
北大核心
2007年第8期992-995,共4页
Mechanical Science and Technology for Aerospace Engineering
基金
西南石油学院油气藏地质及开发工程国家重点实验室开放基金项目资助
关键词
螺纹接头
尺寸偏差
弹塑性接触分析
有限元法
threaded joint
dimensional deviation
elastoplastic contact analysis
finite element method
