Hydrodynamic shock of elastic structures impacting on the water: theory and experiments

Carcaterra, Antonio; Ciappi, E.

doi:10.1016/j.jsv.2003.02.005

Cited by 43 publications

(26 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…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: 92%

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

Section: Chaptermentioning

confidence: 99%

“…[28,32,34,35,56]). However, their interest mostly focused on the analysis of the pressure at the fluid/structure interface rather than the structural One of the main requirements was to be able to easily test a high number of wedges with different stiffness and deadrise angle without having a large number of specimens.…”

Section: Scope Of Present Investigationmentioning

confidence: 99%

See 2 more Smart Citations

Hydroelastic Impacts of Deformable Wedges

Panciroli

2012

Dynamic Failure of Composite and Sandwich Structures

View full text Add to dashboard Cite

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

show abstract

Section: Chaptersupporting

confidence: 92%

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

Section: Chaptermentioning

confidence: 99%

See 1 more Smart Citation

Hydroelastic Impacts of Deformable Wedges

Panciroli

2012

Dynamic Failure of Composite and Sandwich Structures

View full text Add to dashboard Cite

show abstract

“…Zhao and Faltinsen concluded: when ≥45º, the maximum pressure is at the apex of the wedge; when is less than 30ºapproximately, high impulse pressures are concentrated on a small area near the root of the jet. Carcaterra et al [4,5] developed analytical models for the hydrodynamic force and wedge motion during the slamming stage, which assumes a constant entry speed and neglects gravity force. During the water entry of freefall wedges, both gravity force and wedge acceleration influence the wedge motion and/or the hydrodynamic force.…”

Section: Introductionmentioning

confidence: 99%

Analysis of loads, motions and cavity dynamics during freefall wedges vertically entering the water surface

Wang

Lugni

Faltinsen

2015

Applied Ocean Research

View full text Add to dashboard Cite

“…Further study show that, the hydrodynamic impact which the wave acts on the boat should not be neglected, this impact will cause the boat's bending and torsion deformation [19,20]. Here, assuming that the wave direction is in line with the direction of the wind and is vertical to the central lateral plane of boat.…”

Section: A New Rolling Model Of the Rotary-molded Boatmentioning

confidence: 99%

Research on chaos and nonlinear rolling stability of a rotary-molded boat

Qi-guo

Liu

2016

Nonlinear Dyn

View full text Add to dashboard Cite

On the basis of nonlinear features analysis of restoring torque, damping torque and especially hull deformation, a nonlinear roll equation of rotary-molded boats has been established. The equation includes elastic deformation term which makes the equation different from existing ones for steel boats. This paper dissected its dynamic characteristic of rolling motion from different aspects by using time domain diagram, phase graph, Poincare map, as well Lyapunov exponential spectrum. And then, an exact feedback linearization controller was designed using closed-loop gain shaping algorithm to make the boat get rid of chaotic state. Through numerical simulation, it is found that the roll frequency and velocity increase when elastic deformation occurs; i.e., the roll stability margin shrinks, and the chaos phenomenon is much more remarkable. This conclusion laid the foundation for controlling or restraining the boat's rolling and can be used as the basis of how to amend the evaluation criteria on rotarymolded boat stability.

show abstract

Hydrodynamic shock of elastic structures impacting on the water: theory and experiments

Cited by 43 publications

References 10 publications

Hydroelastic Impacts of Deformable Wedges

Hydroelastic Impacts of Deformable Wedges

Analysis of loads, motions and cavity dynamics during freefall wedges vertically entering the water surface

Research on chaos and nonlinear rolling stability of a rotary-molded boat

Contact Info

Product

Resources

About