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Slamming load on trimaran cross section with rigid and flexible arches
Abstract In this paper, the mixed mode function–modified MPS method was adopted to simulate the water-structure dynamic interaction during slamming impacts on the cross deck of trimaran. The water was considered as an incompressible inviscid fluid and the “conceptual particle” model was used to enhance the stability of the intense free surface interaction during the “filling-up” process under the cross deck. The numerical model for the coupled rigid and flexible modal superposition model was derived for the dynamics of the trimaran hull with rigid and flexible arches, and the flexible arch was simplified by a beam structure. The fluid and structure solvers were coupled in a standard iterative way. The results for rigid-body arch cases obtained with the use of improved free surface condition show good improvement, in comparison to the experiment data. From the study of flexible arch cases with different flexibilities, it is found that the relatively soft structure can reduce the local pressure and slamming load.
Highlights MPS method with special consideration on free surface boundary condition for intense free surface particle interactions. Coupled rigid and flexible modal superposition with the mutual effect between them taken into account. Trimaran cross section with rigid and flexible arches are simulated to study the easing of slamming load by soft arches.
Slamming load on trimaran cross section with rigid and flexible arches
Abstract In this paper, the mixed mode function–modified MPS method was adopted to simulate the water-structure dynamic interaction during slamming impacts on the cross deck of trimaran. The water was considered as an incompressible inviscid fluid and the “conceptual particle” model was used to enhance the stability of the intense free surface interaction during the “filling-up” process under the cross deck. The numerical model for the coupled rigid and flexible modal superposition model was derived for the dynamics of the trimaran hull with rigid and flexible arches, and the flexible arch was simplified by a beam structure. The fluid and structure solvers were coupled in a standard iterative way. The results for rigid-body arch cases obtained with the use of improved free surface condition show good improvement, in comparison to the experiment data. From the study of flexible arch cases with different flexibilities, it is found that the relatively soft structure can reduce the local pressure and slamming load.
Highlights MPS method with special consideration on free surface boundary condition for intense free surface particle interactions. Coupled rigid and flexible modal superposition with the mutual effect between them taken into account. Trimaran cross section with rigid and flexible arches are simulated to study the easing of slamming load by soft arches.
Slamming load on trimaran cross section with rigid and flexible arches
Sun, Zhe (author) / Jiang, Yi-chen (author) / Zhang, Gui-yong (author) / Zong, Zhi (author) / Xing, Jing Tang (author) / Djidjeli, Kamal (author)
Marine Structures ; 66 ; 227-241
2019-04-29
15 pages
Article (Journal)
Electronic Resource
English
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