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TECHNICAL PAPERS

The Kinematics of Wheat Struck by a Wind Gust

[+] Author and Article Information
T. Farquhar

Department of Mechanical Engineering, University of Maryland, Baltimore, MD 21250 Mem. ASMEe-mail: farquhar@umbc.edu

J. Z. Wood

Northrop Grumman Corporation, Baltimore, MD

J. van Beem

International Center for Maize and Wheat Improvement, Mexico

J. Appl. Mech 67(3), 496-502 (Feb 04, 2000) (7 pages) doi:10.1115/1.1311960 History: Received July 30, 1999; Revised February 04, 2000
Copyright © 2000 by ASME
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References

Figures

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Key structures of a single wheat stalk
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Camera view of synthetic gust test apparatus
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First quarter cycle of motion for two varieties (sideview)
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Experimental pathlines for Baviacora-2 (topview). The angle θ is measured relative to an arbitrary reference.
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Special deviation metric as a function of gust angle for Baviacora-2
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Diagrammatic representation of a two-degree-of-freedom model.
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Frequency of vibration along the gust axis as a function of gust angle for Baviacora-2
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Foreshortened topview of stem as viewed from the spike
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Undamped stem torque as a function of time for two varieties (normalized by maximum value over interval)
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Simulated model pathlines for Baviacora-2 (compare to Fig. 4). The angle ϕ is measured relative to an intrinsic reference.

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