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The Twist and Shear of Helically Buckled Pipe
Proceedings of SPE/IADC Drilling Conference, 2003Summary The effect of torque on buckling was first recognized while designing hollow propeller shafts for ships. If buckling could be caused by torque, then perhaps torque could be induced by helical buckling. This effect has not been extensively studied because the assumption has always been that the effect was too small to be of ...
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Helical instability in film blowing process: Analogy to buckling instability
Physics of Fluids, 2017The film blowing process is one of the most important polymer processing operations, widely used for producing bi-axially oriented film products in a single-step process. Among the instabilities observed in this film blowing process, i.e., draw resonance and helical motion occurring on the inflated film bubble, the helical instability is a unique ...
Joo Sung Lee +3 more
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The helical buckling analysis of coiled tubing in offshore pipelines
Ships and Offshore Structures, 2018Buckling deformation of pipe in actual bore hole will limit the maximum running depth and is likely to further damage the drilling pipe, causing huge losses.
Feng Guan +7 more
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Measurement and Analysis of Induced Torsion in Helically Buckled Tubing
Proceedings of SPE/IADC Drilling Conference, 2005Summary In the original publication on helical buckling by Lubinski et al. (1962), it was assumed that no torsion can be developed in buckled tubular string (Lubinski–Woods problem) if there is no casing-to-tubing friction and tubing remains in an elastic range of bending.
A. Zdvizhkov, S. Miska, R. Mitchell
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Wall Contact Forces on Helically Buckled Tubulars in Inclined Wells
Journal of Energy Resources Technology, 1990Wall forces on helically buckled pipe can cause large frictional forces that may prevent movement of the pipe in steeply inclined holes. A method of analyzing the dependency of the wall contact force on axial force and hole inclination is presented. The concept of an apparent wall force is introduced to explain phenomena associated with helix pitch ...
Y. C. Chen, J. B. Cheatham
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Onset and Post Buckling of Pipe-in-Pipe’s Helical Buckling Using Improved Energy Method
Volume 3: Structures, Safety, and Reliability, 2018The purpose of this paper is to present theoretical solutions based on an improved energy method for predicting the helical buckling (HB) behavior of pipes in vertical, inclined, and horizontal wells. The energy method has been applied to solve the pipe-in-pipe’s (PIP) helical buckling behavior since Lubinski, et al [2] in the 1950’s ...
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Buckling analysis of a helical extension spring under combined loading
Thin-Walled StructuresA new formula is introduced to analytically determine the critical torsional load or angle of rotation that confers instability in a tension spring under combined tension and torsion load using the theoretical framework of Greenhill's problem applied to an elastic bar as a starting point.
González-Cabrero, José +3 more
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Buckling of helically wound composite cylinders under uniform external pressure
Ships and Offshore Structures, 2023Xinlong Zuo +4 more
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Helical Buckling Behaviors of the Nanowire/Substrate System
2018Youlong Chen, Yilun Liu, Xi Chen
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BUCKLING OF A LONG HELICAL SPRING UNDER THE COMPRESSIVE LOAD
Journal of the Society of Mechanical Engineers, 1925openaire +1 more source