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Title: Structural modelling and testing of failed high energy pipe runs: 2D and 3D pipe whip
Authors: Reid, SR
Wang, B
Aleyaasin, M
Keywords: Pipe whip;Dynamic structural plasticity;Safety design;Large plastic deformation
Issue Date: 2011
Publisher: Elsevier
Citation: International Journal of Pressure Vessels and Piping, 88(5-7): 189 - 197, May 2011
Abstract: The sudden rupture of a high energy piping system is a safety-related issue and has been the subject of extensive study and discussed in several industrial reports (e.g. [2], [3] and [4]). The dynamic plastic response of the deforming pipe segment under the blow-down force of the escaping liquid is termed pipe whip. Because of the potential damage that such an event could cause, various geometric and kinematic features of this phenomenon have been modelled from the point of view of dynamic structural plasticity. After a comprehensive summary of the behaviour of in-plane deformation of pipe runs [9] and [10] that deform in 2D in a plane, the more complicated case of 3D out-of-plane deformation is discussed. Both experimental studies and modelling using analytical and FE methods have been carried out and they show that, for a good estimate of the “hazard zone” when unconstrained pipe whip motion could occur, a large displacement analysis is essential. The classical, rigid plastic, small deflection analysis (e.g. see [2] and [8]), is valid for estimating the initial failure mechanisms, however it is insufficient for describing the details and consequences of large deflection behaviour.
Description: Copyright @ 2011 Elsevier
ISSN: 0308-0161
Appears in Collections:Publications
Mechanical and Aerospace Engineering
Dept of Mechanical Aerospace and Civil Engineering Research Papers

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