Influence of Elasticity on Hydrodynamic Impact Problem

Abstract

The two dimensional wedge entry problem with the hydro-elasticity effect is discussed in this paper. The bottom plate of wedge is treated as an elastic beam but the effect of air trapping is ignored. The theory is based on the matched asymptotic expansion method which was applied to the hydrodynamic impact problem recently. An experiment of wedge entry with elastic bottom also has been carried out. Results show that the agreement between the theory and the experiment is pretty good and the effect of hydro-elasticity is very important for the estimation of the strain of the wedge bottom plate.