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Effective elastic moduli of polymer bonded explosives from finite element simulations

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arxiv cond-mat/0510367 v1 pith:U4XHLTK5 submitted 2005-10-13 cond-mat.mtrl-sci

Effective elastic moduli of polymer bonded explosives from finite element simulations

classification cond-mat.mtrl-sci
keywords effectiveelasticelementfinitemodulisimulationsapproachcomposites
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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abstract

Finite element analysis has been used successfully to estimate the effective properties of many types of composites. The prediction of effective elastic moduli of polymer-bonded explosives provides a new challenge. These particulate composites contain extremely high volume fractions of explosive particles ($>$ 0.90). At room temperature and higher, the Young's modulus of the particles can be 20,000 times that of the binder. Under these conditions, rigorous bounds and analytical approximations for effective elastic properties predict values that are orders of magnitude different from the experimental values. In this work, an approach is presented that can be used to predict three-dimensional effective elastic moduli from two-dimensional finite element simulations. The approach is validated by comparison with differential effective medium estimates and three-dimensional finite element simulations.

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