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Evaluate Operational Modal Analysis and Compare the Result to Visualized Mode Shapes
Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
2017 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The prototypes vibration test carried out for obtaining reliable information concerning machine’s dynamic properties in development process. Analysis results should be able to correlate with FE model to determine if some underlying assumptions (material properties & boundary conditions) were correct. EMA used for extracting structure modal parameter under laboratory condition. However, EMA can generally not provide all required information concerning machine dynamic property. To simulate vibration in operating, it commonly requires the model based on dynamic properties of the machine under operating. Thus, vibration tests need carried out under operational condition. OMA is a useful tool for extracting information concerning dynamic properties of operating machine. This report concerns vibration test of part of mining machine under operating condition. Modal parameters extracted by two kinds of OMA methods. Results from OMA was compared with corresponding EMA results, illustrates reader the advantages of OMA.

Place, publisher, year, edition, pages
2017. , p. 109
Keyword [en]
Operational Modal Analysis, FDD, SSI, Experimental Modal Analysis, Noise and Vibration Test
National Category
Applied Mechanics
Identifiers
URN: urn:nbn:se:bth-15599OAI: oai:DiVA.org:bth-15599DiVA, id: diva2:1161633
External cooperation
Atlas Copco Rocktec Division, Örebro, Sweden
Subject / course
MT2525 Masters Thesis (120 credits) in Mechanical Engineering with emphasis on Structural Engineering
Educational program
MTAMT Master of Science Programme in Mechanical Engineering with emphasis on Structural Mechanics
Presentation
(English)
Supervisors
Examiners
Available from: 2017-12-01 Created: 2017-11-30 Last updated: 2017-12-01Bibliographically approved

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Applied Mechanics

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CiteExportLink to record
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Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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  • de-DE
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  • en-US
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  • nn-NO
  • nn-NB
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  • Other locale
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Output format
  • html
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