Dynamic Analysis of a Pumping Station with Coupling Misalignment Fault

Ahmed Ghorbel; Oussama Graja; Moez Abdennadher; Lassâad Walha; Mohamed Haddar

doi:10.1007/978-3-030-76517-0_9

Dynamic Analysis of a Pumping Station with Coupling Misalignment Fault

Ahmed Ghorbel, Oussama Graja, Moez Abdennadher, Lassâad Walha, Mohamed Haddar

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Misalignment fault is a common source that generates strong vibrations and even dysfunction in rotating machinery. However, the characteristics of the dynamic response and the modeling of this type of defect have not been fully understood and there remains today an attractive field of research. This paper sheds the light on the modeling of vibrations and the diagnosis of coupling misalignment in a water pumping station for a dam case. Firstly, the paper presents a detailed dynamic model of a pump station using lumped elements. The model includes the motor, pump and two elastic couplings. These components are connected by shafts supported by bearings. Secondly, an approach to modeling an alignment defect, specifically parallel misalignment has been developed and presented. Thirdly, motion equations of the model were formulated and solved using Newmark' method. Finally, simulated results are presented and discussed using temporal and spectrum analysis. In parallel misalignment, it is found that multi-frequency components are obvious, static components are shown in the dynamic response. 2x rotational frequency of the motor will appear and is dominated and 1x rotational frequency is weak in the spectrum. The vibration responses of the three supporting bearing according to the radial directions with misalignment defect are investigated.

Original language	English
Title of host publication	Advances in Acoustics and Vibration III
Subtitle of host publication	Proceedings of the Third International Conference on Acoustics and Vibration (ICAV2021), March 15-16, 2021
Editors	Nabih Feki, Mohamed Slim Abbes, Mohamed Taktak, Mohamed Amine Ben Souf, Fakher Chaari, Mohamed Haddar
Publisher	Springer, Cham
Pages	71-78
Number of pages	8
Edition	1st
ISBN (Electronic)	9783030765170
ISBN (Print)	9783030765163
DOIs	https://doi.org/10.1007/978-3-030-76517-0_9
Publication status	Published - 30 May 2021
Externally published	Yes
Event	3rd International Conference on Acoustics and Vibration - Online Duration: 15 Mar 2021 → 16 Mar 2021 Conference number: 3

Publication series

Name	Applied Condition Monitoring
Publisher	Springer Cham
Volume	ACM 17
ISSN (Print)	2363-698X
ISSN (Electronic)	2363-6998

Conference

Conference	3rd International Conference on Acoustics and Vibration
Abbreviated title	ICAV 2021
City	Online
Period	15/03/21 → 16/03/21

Access to Document

10.1007/978-3-030-76517-0_9Licence: Unspecified

Cite this

Ghorbel, A., Graja, O., Abdennadher, M., Walha, L., & Haddar, M. (2021). Dynamic Analysis of a Pumping Station with Coupling Misalignment Fault. In N. Feki, M. S. Abbes, M. Taktak, M. A. Ben Souf, F. Chaari, & M. Haddar (Eds.), Advances in Acoustics and Vibration III: Proceedings of the Third International Conference on Acoustics and Vibration (ICAV2021), March 15-16, 2021 (1st ed., pp. 71-78). (Applied Condition Monitoring; Vol. ACM 17). Springer, Cham. https://doi.org/10.1007/978-3-030-76517-0_9

Ghorbel, Ahmed ; Graja, Oussama ; Abdennadher, Moez et al. / Dynamic Analysis of a Pumping Station with Coupling Misalignment Fault. Advances in Acoustics and Vibration III: Proceedings of the Third International Conference on Acoustics and Vibration (ICAV2021), March 15-16, 2021. editor / Nabih Feki ; Mohamed Slim Abbes ; Mohamed Taktak ; Mohamed Amine Ben Souf ; Fakher Chaari ; Mohamed Haddar. 1st. ed. Springer, Cham, 2021. pp. 71-78 (Applied Condition Monitoring).

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title = "Dynamic Analysis of a Pumping Station with Coupling Misalignment Fault",

abstract = "Misalignment fault is a common source that generates strong vibrations and even dysfunction in rotating machinery. However, the characteristics of the dynamic response and the modeling of this type of defect have not been fully understood and there remains today an attractive field of research. This paper sheds the light on the modeling of vibrations and the diagnosis of coupling misalignment in a water pumping station for a dam case. Firstly, the paper presents a detailed dynamic model of a pump station using lumped elements. The model includes the motor, pump and two elastic couplings. These components are connected by shafts supported by bearings. Secondly, an approach to modeling an alignment defect, specifically parallel misalignment has been developed and presented. Thirdly, motion equations of the model were formulated and solved using Newmark' method. Finally, simulated results are presented and discussed using temporal and spectrum analysis. In parallel misalignment, it is found that multi-frequency components are obvious, static components are shown in the dynamic response. 2x rotational frequency of the motor will appear and is dominated and 1x rotational frequency is weak in the spectrum. The vibration responses of the three supporting bearing according to the radial directions with misalignment defect are investigated.",

keywords = "Dynamic analysis, Misalignment, Modeling, Pumping station",

author = "Ahmed Ghorbel and Oussama Graja and Moez Abdennadher and Lass{\^a}ad Walha and Mohamed Haddar",

note = "Funding Information: Acknowledgements. This work is partially supported by Mechanics, Modelling and Manufacturing LAboratory (LA2MP). The authors also gratefully acknowledge the helpful comments and suggestions of the reviewers, which have improved the presentation. Publisher Copyright: {\textcopyright} 2021, The Author(s), under exclusive license to Springer Nature Switzerland AG.; 3rd International Conference on Acoustics and Vibration, ICAV 2021 ; Conference date: 15-03-2021 Through 16-03-2021",

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Ghorbel, A, Graja, O, Abdennadher, M, Walha, L & Haddar, M 2021, Dynamic Analysis of a Pumping Station with Coupling Misalignment Fault. in N Feki, MS Abbes, M Taktak, MA Ben Souf, F Chaari & M Haddar (eds), Advances in Acoustics and Vibration III: Proceedings of the Third International Conference on Acoustics and Vibration (ICAV2021), March 15-16, 2021. 1st edn, Applied Condition Monitoring, vol. ACM 17, Springer, Cham, pp. 71-78, 3rd International Conference on Acoustics and Vibration, Online, 15/03/21. https://doi.org/10.1007/978-3-030-76517-0_9

Dynamic Analysis of a Pumping Station with Coupling Misalignment Fault. / Ghorbel, Ahmed; Graja, Oussama; Abdennadher, Moez et al.

Advances in Acoustics and Vibration III: Proceedings of the Third International Conference on Acoustics and Vibration (ICAV2021), March 15-16, 2021. ed. / Nabih Feki; Mohamed Slim Abbes; Mohamed Taktak; Mohamed Amine Ben Souf; Fakher Chaari; Mohamed Haddar. 1st. ed. Springer, Cham, 2021. p. 71-78 (Applied Condition Monitoring; Vol. ACM 17).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Dynamic Analysis of a Pumping Station with Coupling Misalignment Fault

AU - Ghorbel, Ahmed

AU - Graja, Oussama

AU - Abdennadher, Moez

AU - Walha, Lassâad

AU - Haddar, Mohamed

N1 - Conference code: 3

PY - 2021/5/30

Y1 - 2021/5/30

N2 - Misalignment fault is a common source that generates strong vibrations and even dysfunction in rotating machinery. However, the characteristics of the dynamic response and the modeling of this type of defect have not been fully understood and there remains today an attractive field of research. This paper sheds the light on the modeling of vibrations and the diagnosis of coupling misalignment in a water pumping station for a dam case. Firstly, the paper presents a detailed dynamic model of a pump station using lumped elements. The model includes the motor, pump and two elastic couplings. These components are connected by shafts supported by bearings. Secondly, an approach to modeling an alignment defect, specifically parallel misalignment has been developed and presented. Thirdly, motion equations of the model were formulated and solved using Newmark' method. Finally, simulated results are presented and discussed using temporal and spectrum analysis. In parallel misalignment, it is found that multi-frequency components are obvious, static components are shown in the dynamic response. 2x rotational frequency of the motor will appear and is dominated and 1x rotational frequency is weak in the spectrum. The vibration responses of the three supporting bearing according to the radial directions with misalignment defect are investigated.

AB - Misalignment fault is a common source that generates strong vibrations and even dysfunction in rotating machinery. However, the characteristics of the dynamic response and the modeling of this type of defect have not been fully understood and there remains today an attractive field of research. This paper sheds the light on the modeling of vibrations and the diagnosis of coupling misalignment in a water pumping station for a dam case. Firstly, the paper presents a detailed dynamic model of a pump station using lumped elements. The model includes the motor, pump and two elastic couplings. These components are connected by shafts supported by bearings. Secondly, an approach to modeling an alignment defect, specifically parallel misalignment has been developed and presented. Thirdly, motion equations of the model were formulated and solved using Newmark' method. Finally, simulated results are presented and discussed using temporal and spectrum analysis. In parallel misalignment, it is found that multi-frequency components are obvious, static components are shown in the dynamic response. 2x rotational frequency of the motor will appear and is dominated and 1x rotational frequency is weak in the spectrum. The vibration responses of the three supporting bearing according to the radial directions with misalignment defect are investigated.

KW - Dynamic analysis

KW - Misalignment

KW - Modeling

KW - Pumping station

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BT - Advances in Acoustics and Vibration III

A2 - Feki, Nabih

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T2 - 3rd International Conference on Acoustics and Vibration

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Ghorbel A, Graja O, Abdennadher M, Walha L, Haddar M. Dynamic Analysis of a Pumping Station with Coupling Misalignment Fault. In Feki N, Abbes MS, Taktak M, Ben Souf MA, Chaari F, Haddar M, editors, Advances in Acoustics and Vibration III: Proceedings of the Third International Conference on Acoustics and Vibration (ICAV2021), March 15-16, 2021. 1st ed. Springer, Cham. 2021. p. 71-78. (Applied Condition Monitoring). Epub 2021 May 29. doi: 10.1007/978-3-030-76517-0_9

Dynamic Analysis of a Pumping Station with Coupling Misalignment Fault

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