Methodology for Experimental Analysis of Pipeline System Vibration

Schrötter, Martin; Trebuňa, František; Hagara, Martin; Kalina, Matúš

doi:10.1016/j.proeng.2012.09.561

Cited by 10 publications

(9 citation statements)

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Section: Literature Review and Methodologymentioning

confidence: 99%

“…The characteristic natural frequencies and modal shapes of a typical pipeline system were then experimentally determined and compared with a finite element method analysis conducted through Solid Works software. 49 It is observed that there is a distinct lack of a systematic and well developed approach for pipeline flexibility analysis considering both the contemporary computational methods and analytically derived formulations. Methods generally available are specifically inclined towards one of the three basic analytical approaches as mentioned previously at the start.…”

Section: Literature Review and Methodologymentioning

confidence: 99%

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A methodology for flexibility analysis of pipeline systems

Zahid

Khan

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part E:

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Pipeline systems serve a crucial role in an effective transport of fluids to the designated location for medium to long span of distances. Owing to its paramount economic significance, pipeline design field have undergone extensive development over the past few years for enhancing the optimization and transport efficiency. This research paper attempts to propose a methodology for flexibility analysis of pipeline systems through employing contemporary computational tools and practices. A methodical procedure is developed, which involves modeling of the selected pipeline system in CAESAR II followed by the insertion of pipe supports and restraints. The specific location and selection of the inserted supports is based on the results derived from the displacement, stress, reaction, and nozzle analysis of the concerned pipeline system. Emphasis is laid on the compliance of the design features to the leading code of pipeline transportation systems for liquid and slurries, ASME B31.4. The discussed procedure and approach can be successfully adjusted for the analysis of various other types of pipeline system configuration. In addition to the provision of systematic flow in analysis, the method also improves efficient time-saving practices in the pipeline stress analysis.

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Section: Literature Review and Methodologymentioning

confidence: 99%

Section: Literature Review and Methodologymentioning

confidence: 99%

A methodology for flexibility analysis of pipeline systems

Zahid

Khan

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part E:

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“…There are other methods, such as one developed by Kim [61] involving wave decomposition theory that is used to measure the change of wave number in a pipe carrying water using vibrational signals and decomposing the signals into propagating waves. Martin [75] used the Pulse system made by the Brüel & Kjaer company to extract both natural frequency and modal shapes from vibration signals that were obtained experimentally.…”

Section: The Development Of Tbl Induced Vibrationmentioning

confidence: 99%

In-Situ Modal Response Characterization of Pipe Structures Through Reynolds Number Variation

Chen

Hugo

Park

2018

Volume 3: Operations, Monitoring, and Maintenance; Materials and Joining

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The modal response characterization of structures is a proven and reliable technique used to monitor system behavior and change, providing information for condition assessment and damage identification. In traditional modal response characterization procedures, an external mass excitation source is used to excite the system, and this is modeled as an impact function. This provides system forcing across a broad range of frequencies. In this investigation, an in-situ method of system excitation is explored. The modal characteristics of externally-supported pipe structures are investigated by varying the flow Reynolds number (Red). Given the increase in flow turbulence with Reynolds number, hydrodynamic pressure fluctuations on the pipe wall provide a varying excitation source. This removes the requirement for an external excitation source. A comparative analysis of data sets collected for both Acrylic and ABS pipe material show similar pressure spectra, while vibration spectra change significantly. Pressure spectra reveal a character whereby the spectral energy increases with increasing Reynolds number. A comparison of in-situ results to those obtained using traditional impact response tests show that vibration spectra collected through Reynolds number variation successfully capture the modal characteristics of the pipe-structure.

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“…The natural frequencies of the original inlet pipelines were gained by the hammering method when the compressor did not run [9]. The locations of excitation points and collecting points are where large pipe vibration is caused, as shown in Fig.…”

Section: Experimental Modal Analysismentioning

confidence: 99%