Results 211 to 220 of about 175,988 (236)
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Pathological Growth-Induced Helical Buckling of Blood Vessels
Journal of ElasticityzbMATH Open Web Interface contents unavailable due to conflicting licenses.
Gui, T., Yin, S., Li, B., Feng, X.
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The Buckling Behavior of Rectangular-Bar Helical Compression Springs
Journal of Applied Mechanics, 1994Buckling design charts are presented for rectangular-bar helical compression springs with clamped ends, demonstrating the 1 effect of the number of turns of the spring.
L. E. Becker, W. L. Cleghorn
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An Analysis of Helical Buckling of Long Tubulars in Horizontal Wells
Proceedings of SPE International Oil and Gas Conference and Exhibition in China, 1998Abstract It is difficult to determine real helical configuration by the current energy method. This paper describes an analytical solution based on equilibrium method, which represents the real configuration of helically buckled tubular subjected to axial and torsion loading in horizontal wells. New results of axial
Gao Deli, FengWu Liu, BingYe Xu
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Simple Frictional Analysis of Helical Buckling of Tubing
SPE Drilling Engineering, 1986Summary Previous analyses of helical buckling of tubing have not considered frictional forces. In this paper, differential equations are derived and solved for two simplified cases of interest: downward motion of the tubing—e.g., when buckling occurs during the landing of the tubing—and upward motion of the tubing—e.g., when buckling ...
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Equilibrium equations for 3D critical buckling of helical springs
Applied Mathematics and Mechanics, 2012In most cases, the research on the buckling of a helical spring is based on the column, the spring is equivalent to the column, and the torsion around the axial line is ignored. A three-dimensional (3D) helical spring model is considered in this paper.
Xiu-gen Wu +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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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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New Analytic Solutions for Pipe Helical Buckling Problems
Proceedings of International Oil and Gas Conference and Exhibition in China, 2010Abstract There are some numerical solutions(4,5) for pipe buckling problems in vertical and horizontal wells, but, we need exact analytic solutions for precise analysis of pipe buckling problems. The first analytic solution for pipe buckling in a vertical well was presented by Lubinski and Woods in 1962(2).
M. Teymoorishamasbi +3 more
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On the helical buckling of anisotropic tubes with application to arteries
Mechanics Research Communications, 2023N.K. Jha +4 more
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