Limit Load Analysis of Elbow with Local Wall Thinning under Combined Loads

Peng Cui; Chang Yu Zhou

doi:10.4028/www.scientific.net/AMM.750.198

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 750Limit Load Analysis of Elbow with Local Wall...

Limit Load Analysis of Elbow with Local Wall Thinning under Combined Loads

Abstract:

The local wall thinning(LWT) is a kind of common volume defect in pressure pipe. The limit loads of elbows with LWT under pressure, bending moment, torque and their combined loads have been studied in detail by orthogonal experimental design and finite element method. The results have shown that the influence of depth and circumferential length of LWT on the limit load is more obvious compared to that of axial length when an elbow is under pressure, bending moment or torque. The change of limit bending moment and torque with the depth of LWT and circumferential length is significant for an elbow under combined bending moment and torque. At last, the safety assessment equations for elbow under combined in-plane closing bending moment and torque were proposed by regression analysis.

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Periodical:

Applied Mechanics and Materials (Volume 750)

Pages:

198-205

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.750.198

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Online since:

April 2015

Authors:

Peng Cui, Chang Yu Zhou*

Keywords:

Elbow, Limit Load, Local Wall Thinning, Torque

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* - Corresponding Author

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