Influence by Casing Geometric Imperfection on Anti-Collapse Strength with Finite Element Calculation

Abstract:

This essay was to build a finite element model to find the influence by oil casing geometric imperfection on anti-collapse strength. Two types of oil casing, Ф177.8×10.36mm/P110 andФ127×9.19mm/ P110, was taken for the calculation, considering the influence on anti-collapse strength by casing with two elements separately, ovality and non-uniformity of wall thickness. The calculation show that the anti-collapse strength of perfect casing perform better than that of imperfect casing. Ovality is an important factor for the anti-collapse strength, and the anti-collapse strength decrease rapidly as the ovality increase. Non-uniformity of wall thickness is the less important factor for anti-collapse strength, and the anti-collapse strength decrease slightly and slowly while the non-uniformity of wall thickness increase.

• Periodical: Applied Mechanics and Materials (Volumes 268-270)
• Pages: 1114-1118
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.268-270.1114
• Online since: December 2012
• Authors: Ji Jun Xue, Peng Wang
• Keywords: Anti-Collapse Strength, Finite Element, Non-Uniformity of Wall Thickness, Oil Casing, Ovality

References

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