Analysis of the Strength of Helical Buckling Tubing String

Da Hu Zhong; Hui Xia; Yi Hua Dou; Yin Ping Cao

doi:10.4028/www.scientific.net/AMM.684.231

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 684Analysis of the Strength of Helical Buckling...

Analysis of the Strength of Helical Buckling Tubing String

Abstract:

Deformation of helical buckling appears on tubing string under axial compressive loads, and it may even make the tubing string fail when the loads are excessively large. To make clear stress distribution and variation of helical buckling tubing string, the formulas of equivalent stresses inside and outside of the tubing string are deduced based on the spring theory and the fourth strength theory. From the analysis, we can see that the equivalent VonMises stress increase with the clearance of tubing string and casing, and the increase are 22.44 percent and 45.9 percent respectively for inside and outside stress with clearance increase form 29.1mm to 39.69mm. The proposed method used for the helical buckling tubing string makes up the insufficient of traditional tubular mechanics effectively.

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Proceedings of 2014 International Conference on Mechanics and Mechanical Engineering

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Periodical:

Applied Mechanics and Materials (Volume 684)

Pages:

231-234

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.684.231

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Online since:

October 2014

Authors:

Da Hu Zhong, Hui Xia, Yi Hua Dou, Yin Ping Cao*

Keywords:

Helical Buckling, Spring Theory, Strength Analysis, Tubing String

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* - Corresponding Author

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