Accession Number : ADA012775


Title :   A Second Order Numerical Model for High Velocity Impact Phenomena


Descriptive Note : Final contract rept.


Corporate Author : MATHEMATICAL APPLICATIONS GROUP INC ELMSFORD NY


Personal Author(s) : Burstein, S Z ; Schechter, H S ; Turkel, E L


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a012775.pdf


Report Date : Jun 1975


Pagination or Media Count : 73


Abstract : 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.


Descriptors :   *IMPACT , *TERMINAL BALLISTICS , FINITE DIFFERENCE THEORY , MATHEMATICAL MODELS , NUMERICAL METHODS AND PROCEDURES , PENETRATION , SHEAR STRESSES , STRESS STRAIN RELATIONS


Subject Categories : Ballistics


Distribution Statement : APPROVED FOR PUBLIC RELEASE