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Collision with a Crushable Bow

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Abstract:

Oil tanker collisions and groundings pose the potential for large spills. Currently, the International Maritime Organization and national governments have design standards for tankers that do not account for a vessel's crashworthiness. By using crashworthiness, a vessel can be optimally designed for both weather and extreme loading situations. Minorsky [1] examined the problem of collision damage on a vessel side wall. Using previous collision data, Minorsky generated a simple damage volume to kinetic energy relationship for the safety of reactors on nuclear-powered ships. Since then, many researchers have provided solutions for the extent of damage on a tanker based on an assumption of a rigid bow collision. Such a formulation does not account for the energy consumed by the bow deformation. As a result, the damage extent to the side of a vessel is overestimated. By adding a crushable bow, the final result will allow for a more optimally designed vessel. This paper provides a simple closed-form solution for modeling the collision resistance of the bulbous bow portions of tankers. This closed-form solution can be combined with side collision solutions to optimally design a tanker for extreme loading conditions.

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Document Type: Research Article

Publication date: July 1, 2001

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  • Marine Technology is dedicated to James Kennedy, 1867-1936, marine engineer, and longtime member of the Society, in recognition and appreciation of his sincere and generous interest in furthering the art of ship design, shipbuilding, ship operation, and related activities.

    The Technical papers in this quarterly flagship journal cover a broad spectrum of research on the latest technological breakthroughs, trends, concepts, and discoveries in the marine industry. SNAME News is packed with Society news and information on national, section, and local levels as well as updates on committee activities, meetings, seminars, professional conferences, and employment opportunities.

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