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TECHNICAL PAPERS

Nonlinear Impact Loading in an Oblique Seaway

[+] Author and Article Information
Patrick J. Finn, Robert F. Beck, Armin W. Troesch

Department of Naval Architecture and Marine Engineering, The University of Michigan, Ann Arbor, MI 48109-2145

Yung Sup Shin

American Bureau of Shipping, Research/Technology, Houston, TX 77060

J. Offshore Mech. Arct. Eng 125(3), 190-197 (Jul 11, 2003) (8 pages) doi:10.1115/1.1578499 History: Received March 01, 2002; Revised August 01, 2002; Online July 11, 2003
Copyright © 2003 by ASME
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References

Figures

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Linear (l ) and impact (nl) hull segments
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Heave motions as a function of wave amplitude. Fn=0.275, λ/L=1.2.
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Pitch motions as a function of wave amplitude. Fn=0.275, λ/L=1.2.
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Longitudinal maximum and minimum vertical bending moment distributions. Fn=0.25, λ/L=1.2, ka=0.087(2a/λ=1/36).
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Sway and yaw motion time histories. Fn=0.25, λ/L=1.2, ka=0.030 (2a/λ=1/105).
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Drift per wave cycle and motion amplitude vs. C22. Drift and motion nondimensionalized by the appropriate motion amplitude predicted by linear strip theory. Fn=0.25, λ/L=1.2, ka=0.030 (2a/λ=1/105).
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Maximum lateral and vertical midship bending moments vs C22. Bending moment max/min nondimensionalized by the linear strip theory bending moment amplitude. Fn=0.25, λ/L=1.2, ka=0.030 (2a/λ=1/105).
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Longitudinal distribution of vertical bending moment over one wave period of encounter. W/o impact modeling. Fn=0.25, λ/L=1.0, ka=0.0036 (2a/λ=1/870).
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Longitudinal distribution of vertical bending moment over one wave period of encounter. With impact modeling. Fn=0.25, λ/L=1.0, ka=0.0036 (2a/λ=1/870).
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Longitudinal distribution of vertical bending moment over one wave period of encounter. W/o impact modeling. Solid lines—first half of cycle; dashed lines—last half of cycle. Fn=0.25, λ/L=1.0, ka=0.16 (2a/λ=1/20).
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Longitudinal distribution of vertical bending moment over one wave period of encounter. With impact modeling. Solid lines—first half of cycle; dashed lines—last half of cycle. Fn=0.25, λ/L=1.0, ka=0.16 (2a/λ=1/20).
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Longitudinal distribution of lateral bending moment over one wave period of encounter. W/o impact modeling. Fn=0.25, λ/L=0.6, ka=0.16 (2a/λ=1/20).
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Longitudinal distribution of lateral bending moment over one wave period of encounter. With impact modeling. Fn=0.25, λ/L=0.6, ka=0.16 (2a/λ=1/20).
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Longitudinal distribution of torsion over one wave period of encounter. W/o impact modeling. Fn=0.25, λ/L=0.7, ka=0.16 (2a/λ=1/20).

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