石油学报 ›› 1994, Vol. 15 ›› Issue (2): 155-160.DOI: 10.7623/syxb199402018

• 石油工程 • 上一篇    下一篇

¢138超高压釜体螺纹联接处的强度分析

栾绍信1, 刘巨宝1, 李宝彦1, 董振刚2   

  1. 1. 大庆石油学院;
    2. 大庆电泵公司
  • 收稿日期:1993-04-26 修回日期:1993-11-03 出版日期:1994-04-25 发布日期:2013-07-08
  • 作者简介:栗绍信,1936年生.1962年毕业于大连理工大学机械系.现任大庆石油学院机械系副教授.通讯处:黑龙江省安达市.邮政编码:151400.

STRENGTH ANALYSIS OF SCREWTHREAD CONTACT FORφ138 SUPER-PRESSURE CYLINDE BODY

Luan shaoxin1, Liu Jubao1, Li Baoyan1, Dong Zhengang2   

  1. 1. Daqing Petroleum Institute;
    2. Daqing Electric-pump Company
  • Received:1993-04-26 Revised:1993-11-03 Online:1994-04-25 Published:2013-07-08

摘要: 用有限元混合法对φ138超高压釜体的热接触应力进行厂综合分析.所用数学模型把确定接触力的大量迭代计算凝缩到少数螺纹牙齿接触点上执行,避免了原方程的多次形成和求解,大大提高了计算速度,减少了计算量,通过引用伪弹簧解决了总刚度矩阵奇异性问题.两年来多次射孔爆炸试验证明理论分析结果正确,釜体安全可靠.

关键词: 高压容器, 强度, 分析, 有限元法, 热应力

Abstract: In this paper the thermal elastic contact stress under a super-high pressure cylinder body in a perforation simulating device is carried out by the mixed-method of finite-element.The mathematical model to be used in the paper can reduce the iteration processes in calculating contact forces to the calculation of a few screwthread contact points,which may avoid the generation and solution of initial equations for many times and greatly increase the calculation speed.Also,a virtual-springs may be used to solve the singular problem of global stiffness matrix.The device has been tested with perforation explosion experiments for many times over the last two years, which shows that the results of the theoretical analysis is correct and the body may work safety and reliably.

Key words: high pressure vessel, intensity, analysis, finite element method, thermal stress