Effect of kinematic characteristics on the impact of an elastic plate with water

Moradi, Hashem; Rahbar Ranji, Ahmad; Haddadpour, Hassan

Effect of kinematic characteristics on the impact of an elastic plate with water

Document Type : Original Article

Authors

¹ PhD, Department of Ocean Engineering, Amirkabir University of Technology, Tehran 15914, Iran

² Associate professor, Department of Ocean Engineering, Amirkabir University of Technology, Tehran 15914, Iran

³ Professor, Department of Aerospace Engineering, Sharif University of Technology, Tehran 11115-8639, Iran

Abstract

The water impact force caused by slamming is one of the important forces that the hydroelastic response of the craft's structure may be significant. Modeling of this phenomenon and the interaction between the hydrodynamic force and deformation of the structure are the challenging problems in offshore structures and water landing aircraft. In this article, the effect of kinematic characteristics including vertical, angular and horizontal velocities, as well as slope angle, on the hydroelastic response of the plate is investigated using the existing hydroelastic model presented for water impact. In addition, dimensionless parameters obtained the kinematic characteristics are employed to determine the conditions in which the horizontal velocity and inclination angle are significant or not during an oblique impact. In these conditions, the plate tends toward the vertical impact with the slope angle of zero. The findings show that increasing the vertical velocity reduces the oscillation period of deflection in both vertical and oblique impacts, and the relationships of maximum deflection with vertical velocity and angular velocity are linear.

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