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  • broaching  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Nonlinear dynamics of ship capsizing due to broaching in following and quartering seas (1999)
    Springer
    Journal of marine science and technology 4 (1999), S. 16-26 
    Details
    ISSN: 1437-8213
    Keywords: Key words: capsizing ; broaching ; surf-riding ; heteroclinic bifurcation ; following seas ; quartering seas
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Technology
    Notes: Abstract: To provide a theoretical methodology to predict the critical condition for capsizing due to broaching, a nonlinear dynamical system approach was applied to the surge–sway–yaw–roll motion of a ship running with an autopilot in following and quartering seas. Fixed points of a mathematical model for the ship motion and unstable manifolds of the fixed point near the wave crest were systematically investigated. As a result, the existence of heteroclinic bifurcation was identified. With numerical experiments, it was confirmed that this heteroclinic bifurcation reasonably well represents the critical condition for capsizing due to broaching. Thus the nonlinear dynamical approach can be substituted for tedious numerical experiments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s007730050003
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  • 2
    Electronic Resource
    Electronic Resource
    Stability assessment for intact ships in the light of model experiments (1999)
    Springer
    Journal of marine science and technology 4 (1999), S. 45-57 
    Details
    ISSN: 1437-8213
    Keywords: Key words: capsizing ; broaching ; stability loss ; bow diving following seas ; quartering seas
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Technology
    Notes: Abstract: A systematic method for assessing intact ship stability with a free-running model in a seakeeping and maneuvering basin is proposed in this paper. Model experiments were carried out in extremely steep regular waves for a model drifting, running in head seas, and quartering seas. This method was applied to two purse seiners, and efficiently identified thresholds in metacentric heights for capsizing of these ships. These capsizing thresholds are compared with requirements of the IMO Code on Intact Stability. This series of model experiments also confirms that capsizing at the threshold occurs only in quartering seas, and shows that capsizing is caused by broaching, loss of stability on a wave crest, or bow diving.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s007730050006
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    Paper (German National Licenses)
    Fulltext
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