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An axisymmetric lagrangian technique for predicting earth penetration including penetrator response
Author(s) -
Schwer Leonard E.,
Rosinsky Russel,
Day James
Publication year - 1988
Publication title -
international journal for numerical and analytical methods in geomechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.419
H-Index - 91
eISSN - 1096-9853
pISSN - 0363-9061
DOI - 10.1002/nag.1610120302
Subject(s) - discretization , lagrangian , penetration (warfare) , rotational symmetry , mechanics , penetration test , aerospace engineering , geology , physics , mathematics , engineering , geotechnical engineering , mathematical analysis , operations research , subgrade
A computational technique for earth penetration is presented which includes the direct coupling between the deformable target model and a deformable model of the penetrator. In this fully Lagrangian approach, both the target and penetrator are discretized to represent the anticipated terradynamic and structural responses. A sliding interface is used between the two models to provide the time‐dependent terradynamic‐to‐penetrator interaction. This technique has the unique advantage of including the target‐to‐penetrator interaction in one calculation in a continuous and consistent manner. Comparisons of calculated penetration with full‐scale field test data are given.