Several meshes are needed to reconstruct the interface in the hypervelocity motions simulated by the MFPPM(Multi-Fluid Parabolic Piecewise Method) due to the use of model in the Parabolic Piecewise Method. In order to improve the accuracy of the reconstructed interface, the MOF(Moment-of-Fluid) interface reconstruction method is employed and combined with our MFPPM code to simulate the various cavities(such as the equilateral triangle, the square, and so on) compressed by the high pressure loading. Results ...