14.6 Conclusions Results suggest there is an error in the implementation of the micromechanics calculation of material properties for the plain weave architecture or an error in model use. As of this writing, work is underway to determine repeatability of these results and revise the micromechanics code. Validation work of the MCM model remains ongoing. This model is expected to provide a new capability not available in other codes to model composite materials, for example, in armor applications under insults inducing large deformations and strong shocks. References 1. Tsai, L., Prakash, V.: Structure of weak shock waves in 2-D layered material systems. Intl. J. Solids Struct. 42, 727–750 (2005) 2. Zaretsky, E., deBotton, G., Perl, M.: The response of a glass fibers reinforced epoxy composite to an impact loading. Int. J. Solids Struct. 41, 569–584 (2004) 3. Ahrens, T.J.: Equation of state. In: Asay, J.R., Shahinpoor, M. (eds.) High Pressure Shock Compression of Solids, pp. 75–114. Springer, New York (1993) Fig. 14.7 Results for unidirectional architecture strength and failure properties for stress- and strain-based failure criteria Fig. 14.8 Qualitative comparison of a non-penetrating impact velocity, onleft 364 m/s, and a perforating impact velocity, onright 795 m/s and a unidirectional composite target 14 Initial Experimental Validation of an Eulerian Method for Modeling Composites 109
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