摘要
在考虑初始椭圆度的油田套管和非均匀外部荷载作用的基础上,通过ANSYS建立套管的有限元分析模型。选取不同均匀度系数的非均匀荷载组合进行对比研究,研究其应力分布规律,以及其应力值大小在不同椭圆度下的变化情况,并与理想圆形套管数值分析结果进行对比。研究表明:套管应力值的大小以及应力分布规律与初始椭圆度的大小以及非均匀荷载的均匀度系数大小有关;套管的椭圆度增加时,或者荷载的不均匀度系数减小时,套管最大应力值增大,应力分布不均匀度也增大。应合理的控制椭圆度的大小来提高套管的抗挤毁强度。
Based on the initial ellipfieity of the oil field easing and the non - uniform external load, the finite element analysis model of the easing was established by ANSYS. The non - uniform load combinations with different uniformity coefficients were selected to study the stress distribution law and the variation of the stress value under different elliptieity. The sinmlation data were compared with those of the ideal circular easing. The study results show that the size of the easing stress and the distribution of stress are related to the size of the initial elliptieity and the uniformity of the non -uniform load. When the easingg elliptieity increases, or the uneven degree of the load decreases, the maxi- nlunl stress value of the easing increases, and the distribution of the stress is increased. It should be reasonable to con- trol the size of the ellipse to improve the strength of the easing.
作者
薛景宏
张蹦蹦
储阳华
XUE Jinghong;ZHANG Bengbeng;CHU Yanghua(Civil Engbwering and Architecture,Northeast Petroleum University,Daqing 163318 China)
出处
《西华大学学报（自然科学版）》
CAS
2018年第6期84-89,共6页
Journal of Xihua University:Natural Science Edition
基金
黑龙江省教育厅科研专项(2016YSFX-02)
关键词
套管
椭圆度
非均匀荷载
有限元分析
应力
casing
ellipticity
non - uniform load
finite element analysis
stress
