Structure Design and Stress Analysis of Hollow Sucker Rod Joints

Abstract:

Owing to the problem of week strength, tripping and bad sealing of the hollow sucker rod joints, we designs a new sucker rod joint, which has two kinds of prototypes, including tapered shoulder and round shoulder. The hollow sucker rod’s characteristic is easy disassembling, multiple sealing, and also has a large contact area of the shoulder. By using the method of finite-element analysis, we set up the finite-element model and analyze the contact stress and deformation distribution of two kinds of structure in different friction coefficients. Through the analysis, we find not only the bearing capacity of the circular arc shoulder joint, but also the sealing is also better than the tapered shoulder's joint. And for both kinds of joints, the friction coefficient is an important factor to affect the pretightening force.

• Periodical: Applied Mechanics and Materials (Volumes 157-158)
• Pages: 1199-1203
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.157-158.1199
• Online since: February 2012
• Authors: Chuan Jun Han, Jie Zhang, Fang Ting Hu, Jun Gang Li, Li Zhang
• Keywords: Contact, Hollow Sucker Rod, Joint, Seal, Stress, Thread

References

[1] Chen Shoujun, Li Qiang, Zhang Yi. Tapered pipe joint thread deforming and analysis on stress distribution, China Mechanical Engineering, 2010, 21(17): 20-45.

[2] J. Zhang X.D. He,S.Y. Du. Analyses of the fatigue crack propagation process and stress ratio effects using the two parameter method . International Journal of Fatigue, 2005, Volume 27 (Issues 10-12) : 1314-1318.

DOI: 10.1016/j.ijfatigue.2005.06.010

[3] Jia Zhen Zhang Jia Zhong Zhang and Zhao Xin Meng. Direct high resolution in situ SEM observations of very small fatigue crack growth in the ultra-fine grain aluminium alloy IN 9052 . Scripta Materialia, 2004, 50 (6) : 825-828.

DOI: 10.1016/j.scriptamat.2003.12.016

[4] Liu Jubao, Ding Yuqi, Han Hongli. Influence of upper buckle moment of torque analysis Based on 3D FEM model. Oil Field Equipment, 2009, 38(3): 28-32.

[5] Liu Ximing, Li Changyou, Wang Xiaomei. Development and application about new type mousing hollow sucker rod. China Petroleum Machinery, 2004, 32(7): 35-36.

[6] NOROOZI A H, GLINKA G, LAMBERT S. A two parameter driving force for fatigue crack growth analysis [J] . Int J Fatigue, 2005, 27 (10-12) : 1277-1296.

DOI: 10.1016/j.ijfatigue.2005.07.002

[7] Sadananda K, Vasudevan A K. Crack tip driving forces and crack growth representation under fatigue . InternationalJournal of Fatigue. 2004, 26 : 39-47.

DOI: 10.1016/s0142-1123(03)00105-1

[8] Zhang Yanmin, Yu Xinzai, Zhang Chengzhi. Discuss about ultra high strength hollow sucker rod production process. China Petroleum Machinery, 2007, 35(9): 135-137.

[9] Zhao Tenglun. Application of ABAQUS6. 6 in the machinery engineering. Beijing: China Waterpower Press, (2007).

[10] Han Chuanjun, Qiu Yaling, Liu Qingyou, and Yao Huiqian. Analysis of Saint-Venant effect on stress distribution in threaded coupling. China Petroleum Machinery, 2009, 37(6): 5-7.