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|Title:||Impact damage on pipe-in-pipe systems||Authors:||Zheng, J.
|Issue Date:||2012||Citation:||Zheng, J.,Palmer, A.,Lipski, W.,Brunning, P. (2012). Impact damage on pipe-in-pipe systems. Proceedings of the International Offshore and Polar Engineering Conference : 152-157. ScholarBank@NUS Repository.||Abstract:||Pipe-in-pipe and bundled pipeline systems are widely used in the offshore industry, because they make it possible to achieve a high level of thermal insulation and because they lend themselves to rapid and economical installation. Traditionally, mechanical design of these systems with regards to fishing gear interaction and dropped objects has used the same approach as for single pipe systems. However, this approach is likely to result in a conservative design as the outer pipe is not required to resist internal pressure and can accommodate a greater level of indentation than a single, pressure containing pipe. Eliminating conservatism in this aspect of design has the potential to eliminate the need for trenching in areas of high fishing activity and can therefore have considerable economic benefits. The paper describes experimental and numerical research directed towards a deeper understanding of this problem. The research includes indentation tests with a knife-edge indenter for both single wall pipe and a pipe-in-pipe, together with ABAQUS calculations which compare well with the experimental data. Copyright © 2012 by the International Society of Offshore and Polar Engineers (ISOPE).||Source Title:||Proceedings of the International Offshore and Polar Engineering Conference||URI:||http://scholarbank.nus.edu.sg/handle/10635/91295||ISBN:||9781880653944||ISSN:||10986189|
|Appears in Collections:||Staff Publications|
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