Finite Element Assessment of Difficult Pipelines at Bends

Zahiraniza Mustaffa; Thar M. Badri Albarody; Azrulfirdaus Muhamad Roshdi

doi:10.4028/www.scientific.net/AMM.567.253

Paper Titles

Dynamic Response of Free-Span Sub-Sea Pipelines under Vortex Induced Vibrations
p.228

Dynamic Responses of Classic Spar Platform: Short Crested Waves vs. Long Crested Waves
p.235

Effect of Anodes on Hydrodynamic Coefficients of Tubular Cylinders - Model Tests
p.241

Effects of Marine Growth on Hydrodynamic Coefficients of Rigid Tubular Cylinders
p.247

Finite Element Assessment of Difficult Pipelines at Bends
p.253

Hydrodynamic Forces on Linear and Multi-Dimensional Arrays of Circular Cylinders
p.259

Investigation of Vortex Induced Vibration of Offshore Pipelines near Seabed
p.265

Multivariate Regression Analysis for Screening Process of Reliability Assessment
p.271

Performance of Mangrove Forests in Coastal Protection
p.277

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 567Finite Element Assessment of Difficult Pipelines...

Finite Element Assessment of Difficult Pipelines at Bends

Abstract:

This paper presents numerical assessment of difficult pipelines at bends using the finite element method (FEM). Difficult pipelines are those that are unable to be inspected using a pig inspection tool. These unpiggable pipes, especially at the bend sections, exhibit difficulties to be piggable for several reasons, thus they are exposed to hazards that can neither be inspected nor controlled. The structural response of the bends is then required to be investigated. This paper aims at simulating the structural response of bends caused by internal corrosions using the ANSYS FEM software. Circular pitting corrosion at different depths and diameters were applied to simulate the stress distribution for three pipe models, namely standard 90° pipe bend, miter bend and unbarred full-bore tees pipe bend near dead end. The results of different corrosion equivalent stress distribution were compared and the most reliable type of bend was reported.

You might also be interested in these eBooks

Structural, Environmental, Coastal and Offshore Engineering

View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volume 567)

Pages:

253-258

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.567.253

Citation:

Cite this paper

Online since:

June 2014

Authors:

Zahiraniza Mustaffa*, Thar M. Badri Albarody, Azrulfirdaus Muhamad Roshdi

Keywords:

ANSYS, Bends, Finite Element Method (FEM), Pipeline, Structural Response, Unpiggable

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] A. M. Roshdi, Structural Assessment of Difficult Pipeline at Bends, Universiti Teknologi PETRONAS (2013).

Google Scholar

[2] K. R. Prasad and T. B. Rao, Ovality in Pipe Bends by Finite Element Analysis. International Journal of Engineering Research and Development, (2013) pp.91-97.

Google Scholar

[3] A. Bhattacharya and D. Long, A Finite Element-Based Investigation on Stress Intensification and Flexibility Factors for Pipe Bend, Oxford, (2010).

Google Scholar

[4] A. Swart, S. Karamanos, A. Scarpas and J. Blaauwendraad, Finite element analysis of damage in pipeline bends, Heron Journal, Vol. 55, No. 1, (2010), pp.33-50.

Google Scholar

[5] W. Kim, J. Baek, and Y. Kim, Integrity Assessment For Corrosion Defect in Hot Bend Pipe of Natural Gas Pipeline, the 24th World Gas Conference (2009).

Google Scholar

[6] W. Eckart, A. Lietzmann, and J. Rudolp, Linear and nonlinear finite-element analyses of pipe bends, International Journal of Pressure Vessels and Piping, (1996) pp.211-217.

DOI: 10.1016/0308-0161(95)00019-4

Google Scholar