Numerical analysis on fluid-solid coupling response of the composite catamaran structures in head and oblique waves
Author(s): LI Yao, LIN Shao-fen, CHEN Qing-lin
Pages: 41-45
Year: 2016 Issue: 10
Journal: Ship Science and Technology
Keyword: coupling response; composite catamaran; numerical wave tank technology; head wave; oblique wave; principal stress;
Abstract: Fluid-structure interaction method (FSI) has been used, researching on the dynamic response of thecata-maran composite structures in head and oblique waves. The whole 3D composite model of catamaran and a numerical wave tank are constructed, based on numerical wave tank technology, dynamic response results of composite catamaran structures in head and oblique waves are carried on. Areas with high stress gradient is chosen and developed with refined mesh.,inter-laminar stresses distribution are then determined. Furthermore, top 10 von-mises and Max/Min. principal stress of the whole yacht are selected as comparative objects, comparing the results of the Fluid-Structure Interaction method (FSI) with finite element method (FEM) ones, it finds that the results from hogging, sagging conditions of FSI are much closer to acombina-tion of bending and torsion conditions of FEM. It is also found that, using the direct calculation method for the steelcata-maran to calculate the composite one in the paper under the head wave will lead to a relatively smaller calculation result.
Pages: 41-45
Year: 2016 Issue: 10
Journal: Ship Science and Technology
Keyword: coupling response; composite catamaran; numerical wave tank technology; head wave; oblique wave; principal stress;
Abstract: Fluid-structure interaction method (FSI) has been used, researching on the dynamic response of thecata-maran composite structures in head and oblique waves. The whole 3D composite model of catamaran and a numerical wave tank are constructed, based on numerical wave tank technology, dynamic response results of composite catamaran structures in head and oblique waves are carried on. Areas with high stress gradient is chosen and developed with refined mesh.,inter-laminar stresses distribution are then determined. Furthermore, top 10 von-mises and Max/Min. principal stress of the whole yacht are selected as comparative objects, comparing the results of the Fluid-Structure Interaction method (FSI) with finite element method (FEM) ones, it finds that the results from hogging, sagging conditions of FSI are much closer to acombina-tion of bending and torsion conditions of FEM. It is also found that, using the direct calculation method for the steelcata-maran to calculate the composite one in the paper under the head wave will lead to a relatively smaller calculation result.
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