Characteristic Study Of Water Entry Of Structures At High Speed

Using the numerical software (finite element method), the characteristics of load during the water entry of the structure at high speed are simulated by the simulating analysis of the model for the structure which launch into water at high speed in this paper. Some significant conclusions are given through the analysis the simulating results.In the first part, the paper introduces the history and the current status of research on the water entry of the structure at high speed at home and broad, which draws the significance of the research on the launch of the structure at high speed. Some useful data are gotten by simulating the dynamic process of launch in engineering. Meanwhile, the fluid-structure interaction is solved by ANSYS/LS-DYNA Soft skilled at analysis of the dynamic response of the structure which launch into water at high speed. A series of values of pressure of structure are gotten by calculating with different the angles of launch. The precision problem is also discussed in this paper.Based on the Ansys model, the numerical simulation calculation can be realized through program LS-DYND. Meanwhile, the non-linear dynamics and the full course of structure launch with high speed was analyzed and simulated. Then the peak value of pressure of structure during the launching course in different angles and speeds can be calculated. The purpose of Numerical study of load characteristic of structure launch in water at high speed comes true.