Numerical simulation of piping vibrations using an updated FE model

Heikki Haapaniemi, Arja Saarenheimo, Paul Smeekes, Heli Talja

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

1 Citation (Scopus)

Abstract

Traditional design and condition monitoring of piping is mainly based on postulated events and on the application of allowable vibration levels. This approach gives only indirect information on the loading at the critical locations and generally leads to over conservative assessments. It is essential that developing piping failures can be anticipated and/or monitored and that any repair work is carefully planned ahead and carried out during regular outages. In an ongoing project a practical method is being developed to monitor the condition and remaining lifetime of process piping. This method combines both measurements - using a minimum number of fixed continuous measurements - and an adequate computational model. Relatively simple piping in a NPP was chosen as the first pilot case. Measured modal shapes of the structure were excited using an impact hammer and a shaker. Results from experimental modal analysis were used in finite element (FE) model validation and updating process carried out using the FEMtools [1] code. This paper outlines the project and describes the main experiences and results of the model updating work.
Original languageEnglish
Title of host publicationPlant Life Management
Subtitle of host publicationProgress for structural integrity
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Pages79-98
ISBN (Electronic)951-38-6281-X
ISBN (Print)951-38-6280-1
Publication statusPublished - 2003
MoE publication typeB3 Non-refereed article in conference proceedings
EventPlant Life Management: Progress for structural integrity - Espoo, Finland
Duration: 1 Jan 20021 Jan 2002

Publication series

SeriesVTT Symposium
Number227
ISSN0357-9387

Seminar

SeminarPlant Life Management
CountryFinland
CityEspoo
Period1/01/021/01/02

Fingerprint

Computer simulation
Hammers
Condition monitoring
Modal analysis
Outages
Repair

Cite this

Haapaniemi, H., Saarenheimo, A., Smeekes, P., & Talja, H. (2003). Numerical simulation of piping vibrations using an updated FE model. In Plant Life Management: Progress for structural integrity (pp. 79-98). Espoo: VTT Technical Research Centre of Finland. VTT Symposium, No. 227
Haapaniemi, Heikki ; Saarenheimo, Arja ; Smeekes, Paul ; Talja, Heli. / Numerical simulation of piping vibrations using an updated FE model. Plant Life Management: Progress for structural integrity. Espoo : VTT Technical Research Centre of Finland, 2003. pp. 79-98 (VTT Symposium; No. 227).
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abstract = "Traditional design and condition monitoring of piping is mainly based on postulated events and on the application of allowable vibration levels. This approach gives only indirect information on the loading at the critical locations and generally leads to over conservative assessments. It is essential that developing piping failures can be anticipated and/or monitored and that any repair work is carefully planned ahead and carried out during regular outages. In an ongoing project a practical method is being developed to monitor the condition and remaining lifetime of process piping. This method combines both measurements - using a minimum number of fixed continuous measurements - and an adequate computational model. Relatively simple piping in a NPP was chosen as the first pilot case. Measured modal shapes of the structure were excited using an impact hammer and a shaker. Results from experimental modal analysis were used in finite element (FE) model validation and updating process carried out using the FEMtools [1] code. This paper outlines the project and describes the main experiences and results of the model updating work.",
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Haapaniemi, H, Saarenheimo, A, Smeekes, P & Talja, H 2003, Numerical simulation of piping vibrations using an updated FE model. in Plant Life Management: Progress for structural integrity. VTT Technical Research Centre of Finland, Espoo, VTT Symposium, no. 227, pp. 79-98, Plant Life Management, Espoo, Finland, 1/01/02.

Numerical simulation of piping vibrations using an updated FE model. / Haapaniemi, Heikki; Saarenheimo, Arja; Smeekes, Paul; Talja, Heli.

Plant Life Management: Progress for structural integrity. Espoo : VTT Technical Research Centre of Finland, 2003. p. 79-98 (VTT Symposium; No. 227).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

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AU - Saarenheimo, Arja

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N2 - Traditional design and condition monitoring of piping is mainly based on postulated events and on the application of allowable vibration levels. This approach gives only indirect information on the loading at the critical locations and generally leads to over conservative assessments. It is essential that developing piping failures can be anticipated and/or monitored and that any repair work is carefully planned ahead and carried out during regular outages. In an ongoing project a practical method is being developed to monitor the condition and remaining lifetime of process piping. This method combines both measurements - using a minimum number of fixed continuous measurements - and an adequate computational model. Relatively simple piping in a NPP was chosen as the first pilot case. Measured modal shapes of the structure were excited using an impact hammer and a shaker. Results from experimental modal analysis were used in finite element (FE) model validation and updating process carried out using the FEMtools [1] code. This paper outlines the project and describes the main experiences and results of the model updating work.

AB - Traditional design and condition monitoring of piping is mainly based on postulated events and on the application of allowable vibration levels. This approach gives only indirect information on the loading at the critical locations and generally leads to over conservative assessments. It is essential that developing piping failures can be anticipated and/or monitored and that any repair work is carefully planned ahead and carried out during regular outages. In an ongoing project a practical method is being developed to monitor the condition and remaining lifetime of process piping. This method combines both measurements - using a minimum number of fixed continuous measurements - and an adequate computational model. Relatively simple piping in a NPP was chosen as the first pilot case. Measured modal shapes of the structure were excited using an impact hammer and a shaker. Results from experimental modal analysis were used in finite element (FE) model validation and updating process carried out using the FEMtools [1] code. This paper outlines the project and describes the main experiences and results of the model updating work.

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Haapaniemi H, Saarenheimo A, Smeekes P, Talja H. Numerical simulation of piping vibrations using an updated FE model. In Plant Life Management: Progress for structural integrity. Espoo: VTT Technical Research Centre of Finland. 2003. p. 79-98. (VTT Symposium; No. 227).