The Effect of Clamping Force and Friction Coefficient on The Clamping Clamp
DOI:
https://doi.org/10.54097/ajst.v7i1.11369Keywords:
Punching pliers, Drill pipe joint, Clamping force, Winding torque, Friction coefficient, Stress.Abstract
In order to study the influence of clamping force and friction coefficient on the stress distribution of drill pipe joint during the buckling process, the nonlinear contact problem and elastoplastic mechanical properties of Φ139.7mm × 9.17mm drill pipe were simulated by finite element analysis method in this paper, and the stress distribution and size of drill pipe joint during the buckling process were obtained. And the effect of clamping force and friction coefficient on the joint of drill pipe. It is found that the stress of drill pipe joint is mainly concentrated in the contact position of drill pipe and the stress value of drill pipe joint shows a trend of increasing. When the friction coefficient is 0.15 and the clamping force is 600KN, although there is stress concentration in the contact position between the clamp teeth and the drill pipe joint, it does not exceed the yield limit of the drill pipe joint, and no plastic deformation occurs. Through the simulation calculation, it is found that the maximum clamping force and the maximum torque are 1200KN and 81.9KN.m respectively. When the torque is fixed, the change of friction coefficient has a great influence on the maximum clamping force of drill pipe joint. With the increase of friction coefficient, the maximum clamping force of drill pipe joint decreases continuously, and the friction coefficient is inversely proportional to the maximum clamping force. The research in this paper enriches the understanding of the buckling process of punching pliers and provides a reference for the rational buckling of pipe string.
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References
Guo Litong. Design of iron driller's punching and buckling clamp mechanism and analysis of pipe column clamping kinematics [D]. Xi'an Petroleum University, 2019.
Ibrahmi A, Hbaieb M, Krichen A. Experimental study of the effect of the threading process on the mechanical and tribological behaviors of the triangular thread[J]. International Journal of Advanced Manufacturing Technology, 2017,88(1-4):269-276.
Abd-Elhady A A. Effect of clamping force and coefficient of friction on the elastic-plastic behavior of cracked bolted joint[J]. Ain Shams Engineering Journal, 2018, 9(4):3113-3122.
Yan W, Xie D, Guo L, et al. Design and Analysis of Iron Roughneck Non-Clamp-Tooth Clamping Mechanism[J]. Journal of Physics: Conference Series, 2020, 1653 (1): 31-39.
YU Zhi, ZHANG Le. Analysis of the effect of clamping force on threaded joints in the upper unloading buckle test[J]. China Petroleum and Chemical Standards and Quality, 2020, 40(18): 53-55.
WU Xiangshi, GAO Lianxin, YUAN Pengbin. Research on the calculation method of buckling torque on joints of oil drill pipe[J]. Drilling process, 2017,40(02):67-70.
Pei Junfeng, Song Chuanzhi, Liu Zhigang, et al. Parameter analysis and optimization of the teeth of iron driller's punch clamp[J]. Mechanical strength, 2019,41(05):1096-1104.
Yan Wenhui, Guo Litong, Peng Yong, et al. Sensitivity analysis of jaw parameters of iron driller's punch clamp[J]. Journal of Xi'an Petroleum University (Natural Science Edition). 2019, 34(05): 110-115.
YE Qiang, YAN Wenhui, LI Huiying, et al. Design of telescopic arm type iron driller's punching pliers[J]. Hydraulic pneumatic and sealing, 2018, 38(06):8-11.
Liu Bailong. Design of rocker-type iron driller's punching buckle pliers and simulation test of buckling process on the jaws [D]. Northeast University of Petroleum, 2017.