On The Coupling Of CFD And CSD
Methodologies For Modeling
Blast-structure Interactions
Author(s)
J. D. Baum, E. L. Mestreau, H. Luo, R. Löhner, D. Pelessone,
M. E. Giltrud & J. K. Gran
Abstract
This paper describes applications of a coupled Computational Fluid Dynamics
(CFD) and Computational Structural Dynamics (CSD) methodology to the
simulation of blast waves generated by bare explosive charges in a test facility
with rigid and deformable walls. The coupled algorithm combines FEFLO98
(CFD) and MARS3D (CSD) via an embedded approach, where the CSD objects
float through the CFD domain. This combination enables an easier and more
accurate prediction of structural deformation, cracking and failure under blast
loading.
Several experiments were conducted to characterize blast load and structural
response as a function of charge size, weapon ignition point (nose or tail) and
orientation (horizontal or vertical). The numerical simulations helped in
understanding the experimental results, some of which were not intuitively
understood. Good agreement between the experimental results and the numerical
predictions were demonstrated for pressure data, blast loading and the
corresponding structural response.
Keywords: blast-structure interaction, coupled CFD and CSD, blast wave
evolution, structural response to blast loading.
Keywords
blast-structure interaction, coupled CFD and CSD, blast wave
evolution, structural response to blast loading.
Related Book
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