Imperial College London
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Dr Adam Jan Sadowski

Faculty of Engineering, Department of Civil and Environmental Engineering

Senior Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 3065a.sadowski Website

 
 
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Location

 

318Skempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Binazir:2019:10.1016/j.tws.2019.106381,
author = {Binazir, A and Karampour, H and Sadowski, AJ and Gilbert, B},
doi = {10.1016/j.tws.2019.106381},
journal = {Thin-Walled Structures},
title = {Pure bending of Pipe-in-pipe Systems},
url = {http://dx.doi.org/10.1016/j.tws.2019.106381},
volume = {145},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Subsea pipelines and PIP systems experience large bending moments during installation andoperation. However, unlike single-walled pipelines, the behaviour of PIPs under bending hasbeen only marginally addressed. In the current study, the bending response of PIP systems withdiameter-to-thickness ratio (D/t) of 15 to 40 is investigated. Linear bifurcation analyses (LBA)and geometrically nonlinear analyses (GNA) are conducted on PIPs of varying lengths.Analytical expressions are provided to predict the classical and nonlinear limit moments ofPIPs, and are compared to existing expressions for single-walled pipelines. Ultimate bendingmoments of PIPs are obtained from physical four-point bending tests and are compared againstgeometrically and materially nonlinear analyses (GMNA). The finite element results show thatin PIPs with centralizers, the limit moments (GNA) drop slightly, however, the ultimatemoments (GMNA) remain unchanged. A parametric study of the effect of geometry andmaterial properties of the inner and outer pipes on the ultimate moment of PIPs is presented. Itis understood that the ultimate moments of PIPs with thick tubes are predominantly influencedby the material nonlinearities rather than ovalization of the tubes.
AU  - Binazir,A
AU  - Karampour,H
AU  - Sadowski,AJ
AU  - Gilbert,B
DO  - 10.1016/j.tws.2019.106381
PY  - 2019///
SN  - 0263-8231
TI  - Pure bending of Pipe-in-pipe Systems
T2  - Thin-Walled Structures
UR  - http://dx.doi.org/10.1016/j.tws.2019.106381
UR  - http://hdl.handle.net/10044/1/73135
VL  - 145
ER  -
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