Breaking Wave Impact onto Elastic Wall

摘要

Two-dimensional unsteady problem of wave impact onto a vertical flexible wall is studied. The wall is modeled as a simply supported Euler beam. The free surface profile of the steep wave, which approaches the wall at a constant velocity, is assumed to be vertical and aerated due to breaking processes. The problem is analyzed in the case of the aerated layer thickness being much smaller than the height of the wave front. Attention is focused on the initial stage of impact, during which the boundary conditions can be linearized and imposed on the initial position of the liquid boundary. The solution is presented in terms of beam deflection and bending stresses. Effects of air concentration and the aerated layer thickness on deflections of the elastic wall and bending stresses are analyzed.