3D Hydrostatics Calculation for Naval Architecture

• Main Authors: Yang, Gwo Liang, 楊國良
• Other Authors: C.F. Hung
• Format: Others
• Language: zh-TW
• Published: 1997
• Online Access: http://ndltd.ncl.edu.tw/handle/62154436595091414383

碩士 === 國立臺灣大學 === 造船工程學系 === 85 === Abstract Development of self-righting ship is an important target for the designof the lifeboat. Design for this kind of non-tranditional ship needs a 3Dhydrostatic calculation to overcome the restriction in the conventional 1-Diteration approach. The 3D calculation method improves the precision ofnaval architectural calculation, moreover it is available for the hydrostaticcalculation of arbitary floating body. In this paper , we adduce the surface model to represent the 3D shipmodel. We use the surface meshes to enclose the complex ship space. Withthese meshes,we decompose the complex ship space into many simple tetrahidra.By tracing the panels of the surface meshes , tracing the waterline boundaryand the geometric characterist of these little solids , we make the complexhydrostatic calculation possible.Then we apply this method to the hydrostaticcalculation in large inclining angle. We develop a program system in PC x86 plateform for hydrostatic calculationof abitary floating body in any inclining conditions . Finally, we select theself-righting stability calculation of a traffic boat as a demostration . Thelocation of center of gravity in the self-right is varified by a model test.We also compare the calculated righting arm and triming angle from thepresentational method and AutoHydro program in the same conditions of a 21Mboat. The results show good agrument. This presented method provide a moreconvenient and less restrctive way to construct shipbody in stabilitycalculation.