2012 Fiscal Year Final Research Report
Optimal Loading System to Prevent Cargo Damage in Rough Sea Navigation from Viewpoint of Vibration Response
| Project/Area Number |
22360372
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Naval and maritime engineering
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| Research Institution | Kobe University (2012)
Hiroshima National College of Maritime Technology (2010-2011) |
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Principal Investigator |
SASA Kenji 神戸大学, 大学院・海事科学研究科, 准教授 (10360330)
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| Co-Investigator(Kenkyū-buntansha) |
TERADA Daisuke 水産総合研究センター, 水産工学研究所, 研究員 (80435453)
SHIOTANI Shigeaki 神戸大学, 自然科学系先端融合研究環重点研究部, 教授 (00105363)
KOBAYASHI Eiichi 神戸大学, 大学院・海事科学研究科, 教授 (90346289)
WAKABAYASHI Nobukazu 神戸大学, 大学院・海事科学研究科, 教授 (60242351)
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| Research Collaborator |
INCECIK Atilla University of Strathclyde, United Kingdom, Prof
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| Project Period (FY) |
2010 – 2012
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| Keywords | 船体運動 / 貨物損傷 / 甲板加速度 / ラッシング張力 / 数値解析 / 統計解析 / 荒天波浪 |
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| Research Abstract |
Maritime transportation with vessels is required to operate under more complicated natural conditions than road or rail transportations. Especially, ship motions in waves are very important to evaluate safety more precisely. Although many studies and theories have been accumulated in the field of naval architecture, there are few examples on the safety evaluation from viewpoint of cargo damage due to large ship motions in actual seas. In this study, the total observation system is newly designed to enable continuous database of ship motions, cargo deck accelerations, lashing forces of vehicle cargo in a 20,000DWT class domestic ferry. Some relations can be revealed between cargo impacts and ship motions from these databases. Moreover, these kinds of data can be observed in March 11, 2011, when theunprecedented size of seaquake and tsunami in Tohoku District, Japan. The ferry was off Miyagi Prefecture,which is very near from epicenter of the seaquake. The remarkable response is recognized around 10Hz in observed vertical acceleration. The similar phenomenon is assured in vessels at sea, as well as that in land. Relations of cargo deck accelerations and lashing forces can be almost explained by ship motions and wave conditions in rough seas. Now we are constructing the dynamic simulation algorithm about cargo damage due to ship motions, and it contributes to the new safety management of vehicle cargo operation at seas.
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