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dc.contributor.authorZhang, Qiangen_US
dc.contributor.authorWang, Xiaolongen_US
dc.contributor.authorLi, Weien_US
dc.contributor.authorXiao, Zhongminen_US
dc.contributor.authorYue, Qianbeien_US
dc.contributor.authorZhu, Yuen_US
dc.identifier.citationZhang, Q., Wang, X., Li, W., Xiao, Z., Yue, Q. & Zhu, Y. (2021). Buckling of a twisted rod with centralizers in a tubing. Journal of Petroleum Science and Engineering, 204, 108731-.
dc.description.abstractA lot of research work has been done on the buckling of compressed rods with connectors in cylinders. However, very limited investigations on the buckling of a twisted sucker rod with centralizers in the progressing cavity pump well has been carried out so far. In our present study, a numerical computational strategy is proposed to investigate this highly important buckling problem. Firstly, a twisted sucker rod with or without centralizers is selected for finite element simulation and calculation, which verifies our solution method. Following that, the effects of centralizer number, centralizer spacing, sucker rod diameter and tubing diameter on the critical torque are analyzed. It is found that the clearance ratio, i.e., the ratio of the clearance between the centralizer and the tubing to the clearance between the sucker rod and the tubing, is the only factor that affects the dimensionless critical torque. With a centralizer, the critical rod length is usually reduced by 25% compared to the case of a rod with hinged restraint.en_US
dc.relation.ispartofJournal of Petroleum Science and Engineeringen_US
dc.rights© 2021 Elsevier B.V. All rights reserved.en_US
dc.subjectEngineering::Mechanical engineeringen_US
dc.titleBuckling of a twisted rod with centralizers in a tubingen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Mechanical and Aerospace Engineeringen_US
dc.subject.keywordsProgressing Cavity Pumpen_US
dc.subject.keywordsSucker Roden_US
dc.description.acknowledgementThe authors would like to acknowledge that the work described in this paper was funded by National Natural Science Foundation of China (No. 51774093, 51904075, 11502051), Natural Science Foundation of Heilongjiang Province of China (No. LH 2020A001), China Postdoctoral Science Foundation (No. 2019M661248) and Postdoctoral Foundation of Heilongjiang Province of China (No. LBH-Z19124).en_US
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