• 应用研究 •

### 基于慢动力法的受压扭管柱静力屈曲分析

1. 1. 东北石油大学机械科学与工程学院, 黑龙江大庆 163318;
2. 中海石油有限公司天津分公司, 天津 300452
• 收稿日期:2015-09-15 修回日期:2015-12-31 出版日期:2016-08-15 发布日期:2016-02-03
• 通讯作者: 张强,副教授,博士,硕士生导师,从事石油钻采杆管柱及其流固耦合力学研究.E-mail:tical2012@163.com
• 基金资助:

国家自然科学基金（11502051），高等学校博士学科点专项科研基金（20132322110003），黑龙江省青年科学基金（QC2013C004），黑龙江省教育厅科学技术研究（12531055）和东北石油大学青年科学基金（NEPUQN2014-16）资助项目.

### BUCKLING ANALYSIS FOR TUBULAR COLUMN BASED ON SLOW DYNAMIC METHOD

ZHANG Qiang1, AN Chao1, XU Jie2, DING Yuqi1

1. 1. Mechanical Science and Engineering College, Northeast Petroleum University, Daqing 163318, Heilongjiang, China;
2. CNOOC Ltd, Tianjin 300452, China

Abstract:

The tubular column of drilling and screw pumps is subjected to both the axial pressure and torque loads in operations. Slow dynamic method is proposed to calculate the column buckling torque and pressure. Based on the idea of the transient dynamics method in solving the statics problem, the loading, and the strategies of choosing the damping factor and sub-steps are analyzed. The numerical results show that when the axial pressure and torque are acted alone or simultaneously, the finite element solution is in good agreement with the analytical solution. This paper also analyzes the influencing factors of the computational effciency of the slow dynamic method.

Key words:

tubular column|buckling force|finite element|slow dynamic method