Experimental investigation of slamming characteristics of stiffened elastic wedges with different deadrise angles: Part II–Structural response

In order to further understanding and explore the structural responses induced by slamming pressures during high velocity water impacts, this paper conducts a series of experiments to study the response characteristics of elastic wedges with different deadrise angles. Initially, verification experiments, including static loading and hydrostatic immersion, are performed to establish the rigidly fixed boundary conditions of the test plate. The results indicate that the data are repeatable, with a maximum relative standard deviation of −6.8%. The discrepancy between the experimentally obtained results and the theoretical velocity values was less than 5%. Subsequent investigations focus on temporal and spatial evolution of stress, the propagation speed of stress peak, and hydroelastic effects. The findings indicated the average propagation speed of the stress peak exceeds that of the pressure peak, with the disparity increasing as the deadrise angle decreases. The stress contributions from the 1st and 2nd-order vibrations ranged from 0.18% to 2.6% and from 0.08% to 1.04%, respectively.