Fracture Model of the Failure Wave in the Shocked Brittle Materials

Guo Wen Yao; Zheng Jie Zhou; Xiao Wei Feng

doi:10.4028/www.scientific.net/AMR.446-449.3718

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 446-449Fracture Model of the Failure Wave in the Shocked...

Fracture Model of the Failure Wave in the Shocked Brittle Materials

Abstract:

A new failure model was developed to describe the failure wave formation and propagation in shocked glass. The progressive percolation of microcracks into the stressed body gives rise to the failure wave phenomenon which could be regarded as a diffusion process. The propagation of failure front is governed by a nonlinear diffusion equation. The dynamic damage constitutive relation is built up to compute the stress state in the material through the failure process. Numerical results are presented and compared to lateral stress gauge measurements in shocked glasses. It is shown that the proposed model can capture the essence of the failure wave phenomenon.

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Periodical:

Advanced Materials Research (Volumes 446-449)

Pages:

3718-3721

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.446-449.3718

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Online since:

January 2012

Authors:

Guo Wen Yao, Zheng Jie Zhou, Xiao Wei Feng

Keywords:

Diffusion Equation, Failure Wave, Fracture Model, Microcracks Concentration

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