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Adaptive Lagrangian modelling of ballistic penetration of metallic targets. (English) Zbl 0892.73056
Summary: A Lagrangian finite element model of ductile penetration is developed. Adaptive meshing is accorded a key role in following the large deformations which develop during penetration. An explicit contact/friction algorithm is used to treat the multi-body dynamics. Rate-dependent plasticity, heat conduction and thermal coupling are also accounted for in the calculations. The properties and predictive ability of the model are exhibited in several applications: copper rod impact, perforation of aluminum plates by conical-nosed projectiles and penetration of high-strength steel targets by WHA long rods. The simulation show close agreement with experimental observations and numerical results.

74S05 Finite element methods applied to problems in solid mechanics
74M20 Impact in solid mechanics
80A20 Heat and mass transfer, heat flow (MSC2010)
Full Text: DOI
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