Large-scale structural analysis of projectiles penetrating arbitrary three-dimensional targets is described. Concrete and geologic target layers are modeled by PENCURV penetration resistance functions with nose shape effects and free surface/material interface algorithms. Projectiles are modeled with solid hexahedral finite elements coupled to PENCURV in an MPI-based parallel finite element code, ParaAble, developed by the authors. Analyses were performed on as many as 1024 processors of a Cray T3E-1200 as well as on hundreds of processors of an SGI Origin and IBM SP systems with excellent scalability, thus producing significant reductions in execution times. The parallel performance demonstrates the ability to efficiently perform such analyses by the use of parallel computing— thus making the analysis of very large detailed finite element analyses reasonable. This paper will elaborate on the parallel computational scheme and performance, as well as demonstrate the accuracy and significance of the structural analyses.
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