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Mechanical behavior of stochastic metal-ceramic composites with the aluminum matrix under high-rate deformation at shock-wave loading is numerically simulated with consideration for structural evolution. Effective values of mechanical parameters of metal-ceramic composites Al-B4C, Al-SiC, and Al-Al2O3 are evaluated depending on different concentration of ceramic inclusions. [ABSTRACT FROM AUTHOR]

The response of shocked materials in the pressure range 100 GPa reveals self-similar features that could be linked with collective properties of typical mesodefects (dislocation substructures, microcracks, microshears). The statistical approach was developed that allowed us to specify the Ginzburg-Landau theory for tensor order parameter of the mesodefect density and to establish the existence of self-similar solutions as specific collective modes in mesodefect ensemble related to the plastic strain and damage localization. The subjection of relaxation properties of dynamically loaded materials to mentioned collective modes provides the self-similar behavior of materials that experimentally were observed as the universality (fourth power law) of steady-state plastic front and delayed failure (failure wave) phenomenon as the resonance excitation of blow-up damage localization areas. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR]