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Topics in Modal Analysis, Volume 10 pp 103–113Cite as

Using Mode Shapes for Real Time ODS Animation

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Abstract

In a rotating machine, the dominant forces are applied at multiples of the machine running speed, called orders. An order-tracked ODS is assembled from the peaks at one of the order frequencies in a set of response frequency spectra of a machine. An order-tracked ODS is a convenient way to visualize and monitor the health of the machine.

In this paper, it is shown how modes participate in an order-tracked ODS of a rotating machine, and how they participate differently at different operating speeds. It is also shown how the modal participation can be used to expand an order-tracked ODS so that it is suitable for display on a model of the machine. With an animated ODS display, changing vibration levels and vibration hot spots can be observed while the machine is running.

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References

  1. Potter RW Compilation of time windows and line shapes for fourier analysis. Hewlett Packard Technical Note

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  3. Schwarz BJ, Richardson MH (1997) Structural modifications using higher order elements. In: 15th IMAC conference, Feb 1997

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Author information

Authors and Affiliations

  1. Vibrant Technology, Inc., Scotts Valley, CA, USA

    Brian Schwarz, Shawn Richardson & Mark Richardson

Authors
  1. Brian Schwarz
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  2. Shawn Richardson
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  3. Mark Richardson
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Corresponding author

Correspondence to Mark Richardson .

Editor information

Editors and Affiliations

  1. 8180 Corporate Park Drive, Suite 310, Brüel & Kjær North America, Cincinnati, Ohio, USA

    Michael Mains

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© 2015 The Society for Experimental Mechanics, Inc.

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Schwarz, B., Richardson, S., Richardson, M. (2015). Using Mode Shapes for Real Time ODS Animation. In: Mains, M. (eds) Topics in Modal Analysis, Volume 10. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-15251-6_12

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  • DOI: https://doi.org/10.1007/978-3-319-15251-6_12

  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-15250-9

  • Online ISBN: 978-3-319-15251-6

  • eBook Packages: EngineeringEngineering (R0)

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