This paper proposes a simple but accurate method for calculating the dynamic properties of an air spring employing an orifice to produce a damping force. Air springs are very common in rail, automotive, and vibration isolation applications. However, because this type of air spring has non-linear flow characteristics, an accurate model is yet to be proposed. The restoring and damping forces in an air spring with an orifice damper vary with amplitude. This amplitude dependency has not been considered in previous studies. Proposed herein is a simple model for calculating the air spring constant and damping coefficient. However, iterative calculation is required due to the non-linearity of the spring. The theoretical and experimental results are found to agree well. The theoretical equations provide an effective tool for air spring design.
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ASME 2011 Pressure Vessels and Piping Conference
July 17–21, 2011
Baltimore, Maryland, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-4454-0
PROCEEDINGS PAPER
Theoretical and Experimental Analysis of the Non-Linear Characteristics of an Air Spring With an Orifice Available to Purchase
Yasutaka Yokota,
Yasutaka Yokota
University of Hyogo, Himeji, Hyogo, Japan
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Toshihiko Asami,
Toshihiko Asami
University of Hyogo, Hyogo, Japan
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Tomohiko Ise,
Tomohiko Ise
University of Hyogo, Hyogo, Japan
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Itsuro Honda,
Itsuro Honda
University of Hyogo, Hyogo, Japan
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Hiroya Sakamoto
Hiroya Sakamoto
Tokkyokiki Corporation, Hyogo, Japan
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Yasutaka Yokota
University of Hyogo, Himeji, Hyogo, Japan
Toshihiko Asami
University of Hyogo, Hyogo, Japan
Tomohiko Ise
University of Hyogo, Hyogo, Japan
Itsuro Honda
University of Hyogo, Hyogo, Japan
Hiroya Sakamoto
Tokkyokiki Corporation, Hyogo, Japan
Paper No:
PVP2011-57295, pp. 487-495; 9 pages
Published Online:
May 21, 2012
Citation
Yokota, Y, Asami, T, Ise, T, Honda, I, & Sakamoto, H. "Theoretical and Experimental Analysis of the Non-Linear Characteristics of an Air Spring With an Orifice." Proceedings of the ASME 2011 Pressure Vessels and Piping Conference. Volume 4: Fluid-Structure Interaction. Baltimore, Maryland, USA. July 17–21, 2011. pp. 487-495. ASME. https://doi.org/10.1115/PVP2011-57295
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