Determining the influence of ship hull deformations caused by draught change on shaft alignment application using FE analysis

OCEAN ENGINEERING

卷:210

Article

Seo, Chul-Oh¹  Jeong, Byongug²  Kim, Jung-Ryul³  Song, Myeongho⁴  Noh, Jung-Ho⁵  Lee, Jae-ung⁶ 

[1] Daewoo Shipbldg & Marine Engn Co Ltd DSME, Geoje Daero 3370, Geoje Si 53302, Gyeongsangnam D, South Korea

[2] Univ Strathclyde, Dept Naval Architecture Ocean & Marine Engn, 100 Montrose St, Glasgow G4 0LZ, Lanark, Scotland

[3] Korea Maritime & Ocean Univ, Dept Marine Syst Engn, Taejong Ro 727, Busan 49112, South Korea

[4] Mokpo Natl Maritime Univ, Ship Repair Supporting Ctr, 91 Haeyangdaehak Ro, Mokpo Si 58628, Jeollanam Do, South Korea

[5] Korea Maritime & Ocean Univ, Dept Ship Operat, Taejong Ro 727, Busan 49112, South Korea

[6] Korea Maritime & Ocean Univ, Div Marine Informat Technol, 727 Taejong Ro, Busan 49112, South Korea

关键词: Hull deformation;    Shaft alignment;    Finite element method;    Jack up method;   

DOI  :  10.1016/j.oceaneng.2020.107488

来源: Elsevier

【 摘 要 】

This paper was to address the shortcomings of current design practice to evaluate the stability of the shaft alignment for a 300,000 DWT Very Large Crude Oil Carrier. An enhanced approach using FE was applied to identify the influence of hull deformation on the alignment of the shafting system. The effectiveness of this method was demonstrated in comparison with Jack up technique. Analysis results showed that the hull deformation could be a key factor affecting the offset distortion of each bearing supporting the shaft line. Moreover, it was confirmed that the deformation pattern of cargo hold was opposite to the deformation of engine room structure when hull deformation occurred due to draught change of the case ship. As new research findings, they are believed to contribute significantly to the prevention of shaft damage associated with hull deformations, thereby improving the reliability of shaft alignment for similar types of vessels.

【 授权许可】

Free