Coupled Analysis of Nonlinear Interaction Between Fluid and Structure During Impact

Lu, Cunyue; He, Yanping; Wu, G.X.

doi:10.1006/jfls.1999.0257

Cited by 98 publications

(43 citation statements)

References 8 publications

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“…It was found that the ratio between the impact duration and the period of first mode of vibration of dry structure is the key factor in taking the decision when the solution of the structural response should include hydroelastic effects. Similar results were reported by other scientists [32][33][34][35].…”

Section: Chaptersupporting

confidence: 82%

“…Locking all the edges of the panel has the effect of increasing the first natural frequency. However, in the literature [28,[30][31][32][33][34][35] it was found that hydroelastic effects increase while increasing the entry velocity and decreasing the ratio between the wetting time and the first natural frequency. This means that hydroelasticity is most prone to appear for structures having longer natural period.…”

Section: Chaptermentioning

confidence: 99%

“…Several scientists [27][28][29][30][31][32][33][34][35][36][37] investigated the water impact of elastic structures,…”

Section: Chaptermentioning

confidence: 99%

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Hydroelastic Impacts of Deformable Wedges

Panciroli

2012

Dynamic Failure of Composite and Sandwich Structures

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This work investigates the slamming phenomenon experienced during the water entry of deformable bodies. Wedges are chosen as reference geometry due to their similarity to a generic hull section. Hull slamming is a phenomenon occurring when a ship re-enters the water after having been partially or completely lifted out the water. There are three more cases commonly defined as slamming in marine applications: bow-flare, wet-deck and green water slamming. These are all special cases of the general topic of water entry of a body. While the analysis of rigid structures entering the water has been extensively studied in the past and there are analytical solutions capable of correctly predicting the hydrodynamic pressure distribution and the overall impact dynamics, the effect of the structural deformation on the structural force is still a challenging problem to be solved. In fact, in case

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Section: Chaptersupporting

confidence: 82%

Section: Chaptermentioning

confidence: 99%

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Hydroelastic Impacts of Deformable Wedges

Panciroli

2012

Dynamic Failure of Composite and Sandwich Structures

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“…This well known model is used for validation purposes in the current paper. Lu [26] utilized coupled BEM method and plate theory to simulate water entry process of the mentioned wedge. His investigations showed that reduction in plate thickness increases the elasticity effects.…”

Section: Surface Piercing Propeller Characteristicsmentioning

confidence: 99%

“…He also suggested that for reduction of the plate thickness, the usage of the two-way coupled solver is inevitable. Korobkin [27] compared the accuracy and computational cost of two methods for simulation of Lu [26] water entry problem. He coupled Wagner analytical method with a) Direct FEM to simulate the water entry part and b) modal analysis for the structural simulation.…”

Section: Surface Piercing Propeller Characteristicsmentioning

confidence: 99%

Hydroelastic analysis of surface piercing hydrofoil during initial water entry phase

Javanmardi

Ghadimi

2017

Scientia Iranica

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In the current paper, numerical simulations of Fluid structure interaction (FSI) of a SP (Surface Piercing) hydrofoil are conducted in order to study the influence of elasticity on the initial water entry ventilation.Using ANSYS multi physics solvers, two-way FSI analyses are conducted by the implicit coupled URANS (Unsteady Reynolds averaged Navier-Stokes) equations and finite element method. Numerical result is validated by the well known rigid and elastic wedge water entry problems. Subsequently, computational results are presented for different velocity ratios range [0.38, 0.64] and elasticity factor range [0,4].Similar to the Surface Piercing Propeller (SPP), performance curves of a wedge water entry are defined.The obtained similar trend of propeller and wedge performance curves in fully ventilated, transition, and partially cavitated operation modes shows that the adopted approach (2D-study) can be appropriate for future related studies. FSI simulation results indicate that structural deformation can highly affect the location of transition point and shifts it toward the fully ventilated part at high Froude number and elasticity factor. The overall efficiency loss due to increase of foil elasticity is observed and overshoot time of the foil deformation related to the variation of Froude number and elasticity factor, is evaluated.

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Initial Pressure Distribution Due to Jet Impact on a Rigid Body

2001

Journal of Fluids and Structures

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Coupled Analysis of Nonlinear Interaction Between Fluid and Structure During Impact

Cited by 98 publications

References 8 publications

Hydroelastic Impacts of Deformable Wedges

Hydroelastic Impacts of Deformable Wedges

Hydroelastic analysis of surface piercing hydrofoil during initial water entry phase

Initial Pressure Distribution Due to Jet Impact on a Rigid Body

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