The Kinematics of Wheat Struck by a Wind Gust

T. Farquhar; J. Z. Wood; J. van Beem

doi:10.1115/1.1311960

Journal of Applied Mechanics | Volume 67 | Issue 3 | TECHNICAL PAPERS

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TECHNICAL PAPERS

The Kinematics of Wheat Struck by a Wind Gust

T. Farquhar, Assistant Professor, J. Z. Wood and J. van Beem

[+] 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

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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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Farquhar TT, Wood JZ, van Beem JJ. The Kinematics of Wheat Struck by a Wind Gust. ASME. J. Appl. Mech. 2000;67(3):496-502. doi:10.1115/1.1311960.

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The Kinematics of Wheat Struck by a Wind Gust

References

Figures

Key structures of a single wheat stalk

Camera view of synthetic gust test apparatus

First quarter cycle of motion for two varieties (sideview)

Experimental pathlines for Baviacora-2 (topview). The angle θ is measured relative to an arbitrary reference.

Special deviation metric as a function of gust angle for Baviacora-2

Diagrammatic representation of a two-degree-of-freedom model.

Frequency of vibration along the gust axis as a function of gust angle for Baviacora-2

Foreshortened topview of stem as viewed from the spike

Undamped stem torque as a function of time for two varieties (normalized by maximum value over interval)

Simulated model pathlines for Baviacora-2 (compare to Fig. 4). The angle ϕ is measured relative to an intrinsic reference.

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