摘要
石油钻杆在服役环境中要受到介质腐蚀和高温、高压等方面的影响,其受力状态十分复杂,以致失效事故频发,对失效钻杆进行失效分析与评价有助于减少或延缓钻杆失效事故的发生。介绍了石油钻杆加厚过渡区失效分析与有限元分析的研究现状。指出下一步应着重研究超长Miu长度钻杆的失效特征、失效机理与失效原因,以及采用三维有限元技术对在拉伸、弯曲、扭转复合载荷作用下的钻杆加厚过渡区进行系统的力学分析。
Under multiple influences by elements like medium corrosion,high temperature and high pressure,etc.,loading state of the oil drill pipe as being operated is so complicated that failures are caused frequently. Analysis and evaluation of failure of the drill pipe are helpful to reducing or postponing occurrence of such failure. Introduced here in the essay is the current situation of research on failure analysis and FE analysis of drill pipe upset transition area. It is emphasized that the research activities to be conducted next should focus on the char-acteristics, mechanism and causes of failure of the ultra-long Miu drill pipe, and using the 3-D FE technique to conduct systmatic mechanical analysis of the drill pipe upset transition area under the influence by the tension-bendingtorsion combined load.
出处
《钢管》
CAS
2009年第5期28-34,共7页
Steel Pipe
关键词
钻杆
加厚过渡区
失效分析
有限元分析
研究现状
Drill pipe
Upset transition area
Failure analysis
FE analysis
Current situation
