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On the vibration
simulation of submerged pipes: Structural health monitoring
aspects
Pejman Razi and Farid Taheri |
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Vol. 10 (2015), No. 2, 105–122
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Abstract |
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This work aims to provide further insight into the modeling aspects and influence of some important parameters involved in the simulation of vibration of submerged pipes, especially in relation to vibration-based structural health monitoring (VB-SHM) techniques. Two widely used techniques for modeling submerged pipelines, namely the “added mass” and “coupled acoustic-structural” approaches are compared, and their limitations and advantages in the context of VB-SHM are highlighted. Moreover, the paper also presents a comprehensive study of the effect of operational variability on the accuracy of VB-SHM of offshore pipelines. It is demonstrated that the geometric stiffness produced by the operational variability (such as changes in the internal and external pressures of pipelines) could variably alter the overall stiffness of such submerged bodies, hence affecting their dynamic response. Depending on the pipe stiffness, the imposed variations could significantly affect the accuracy of VB-SHM trials. |
Keywords
dynamic response, submerged structures, vibration-based
structural health monitoring (VB-SHM), fluid-structure
interaction (FSI), added mass, coupled acoustic-structural
approach, geometric stiffness, operational variability
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Milestones
Received: 7 February 2014
Revised: 19 December 2014
Accepted: 10 March 2015
Published: 5 August 2015
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Authors |
| Pejman Razi | |
| Department of Civil and Resource
Engineering Dalhousie University 1360 Barrington Street Halifax, NS B3H 4R2 Canada |
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| Farid Taheri | |
| Department of Civil and Resource
Engineering Dalhousie University 1360 Barrington Street Halifax, NS B3H 4R2 Canada |
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