基于慢动力法的受压扭管柱静力屈曲分析  

BUCKLING ANALYSIS FOR TUBULAR COLUMN BASED ON SLOW DYNAMIC METHOD

作　　者：张强[1] 安超[1] 许杰 丁宇奇[1] 

机构地区：[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

出　　处：《力学与实践》2016年第4期418-423,381,共7页Mechanics in Engineering

基　　金：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);东北石油大学青年科学基金(NEPUQN2014-16)资助项目

摘　　要：钻井和螺杆泵采油等管柱,作业时同时承受轴向压力和扭矩载荷作用,提出了慢动力法计算管柱的压扭屈曲问题.利用瞬态动力学方法解决静力学问题的思想,分析了慢动力法中载荷的施加,以及阻尼和子步数的选取策略.数值结果表明:在轴向压力与扭矩单独或同时作用时,求得的有限元解均与解析解吻合较好.文章还分析了慢动力法计算效率的影响因素.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 e-ciency of the slow dynamic method.

关 键 词：管柱 屈曲载荷 有限元 慢动力法 

分 类 号：TE21[石油与天然气工程—油气井工程]