A Second Order Numerical Model for High Velocity Impact Phenomena
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MATHEMATICAL APPLICATIONS GROUP INC ELMSFORD NY
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A second order accurate code for penetration problems associated with high velocity impact of materials that exhibit elastic or elastic plastic behavior has been developed. The model uses a finite difference method based upon an Eulerian formulation of the basic differential equations. For interior mesh points, the difference equations are second order accurate. The boundary is explicity preserved as a discontinuity by the use of tracer particles whose positions mark the current interface or free surface position. On such curves free surface and interface boundary conditions are applied. An example of a penetration interaction problem is presented.