- Volume 15 Issue 3
The potential pollution problems resulting from tanker collision necessitate the requirement for an effective structural design and the development of relevant safety regulations. During a few decades, the great effort has been made by the international Maritime Organization and the Administration, etc, to reduce oil spillage from collision accidents. However there is still a need for investigation in the light of structural evaluation method for the experiments and rational analysis, and design development for an operational purpose of ships. This study aims for investigating a complicated structural response of bow structures of simplified models and oil carriers for assessing the energy dissipation and crushing mechanics of the striking vessels through a methodology of the numerical analysis for the various models and its design changes. Through these study an optimal bow construction absorbing great portion of kinetic energy at the least penetration depth prior to reach to the cargo area and an effective location of collision bulkhead are investigated. In order to obtain a rational results in this study, three stages of collision simulation procedures have been performed step by step as follows; 1) 16 simplified ship models are used to investigate the structural response against bow collision with variation of primary and secondary members. Mass and speed are also varied in four conditions. 2) 21 models consisted of 5 sizes of the full scaled oil carriers are used to perform the collision simulation with the various sizes and deadweight delivered in a recent which are complied with SOLAS and MARPOL. 3) 36 models of 100l oil carrier are used to investigate the structural response and its influence to the collision bulkhead against bow collision in variation with location of collision bulkhead, primary members, framing system and colliding conditions, etc. By the first study using simplified models the response of the bow collision is synthetically evaluated for the parameters influencing to the absorbed energy, penetration depth and impact force, etc.
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- 22nd WEGEMT Mechanics of ship-ship collisions-Basic crushing mechanics Amdaho, J.
- ABS Rules for Building and Classing Steel Vessels 2000 ABS
- On the collision strength of ships' bow Chung, J. Y.
- International Convention for the Safety of Life at Sea, 1974, as amended SOLAS
- International Convention for the Prevention of Pollution from Ships, 1973/1978 MARPOL
- Marine Structure v.6 Ships bow response in high energy collision Kierkegaard, H.
- Proceeding of 7th Int. Offshore and Polar Engng. Conference A study on the critical collisions speed of double hull VLCC Lee, S. G.;Chung, Y. G.
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- J. of Ship Research An analysis of ship collisions with reference to protection of nuclear power plants Minorsky, V. U.
- J. of the Soc. of N.A of Japan v.151 On the ultimate strength of bow construction Ohnishi, T.;Kawakami, H.;Yasukawa, W.;Nagasawa, H.
- J. of Soc. of N.A of Japan v.176 The crushing mechanics of bow structure in head on collision (1st report) -The derivation of simplified equations and their verfication Ohtsubo, H.;Suzuki, K.
- 22nd WEGEMT Bow crushing forces Pedersen, P. T.;Pedersen, P. T.;Valsgaard, S.;Olsen, D.
- A study on the crashworthiness design of bow structure of oil carriers Shin, Y. S.
- Norweigian Maritime Research no.3 Simplified nonlinear analysis of ship/ship collision Valsgard, S.;Pettersen, E.
- Collision test of GKSS Woisin, G.
- Int. J. of Impact Engng v.7 no.2 Collision energy absorption of ships' bow structures Yang, P. D. C.;Caldwell, J. B.