In Situ Dynamic Experiments and Modeling in Multiscale Kinetics of Damage-Failure Transition

Oleg Naimark

doi:10.4028/www.scientific.net/AMM.784.476

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In Situ Dynamic Experiments and Modeling in Multiscale Kinetics of Damage-Failure Transition

Abstract:

Scaling regularities that reveal the power law statistics of fragmentation and self-similarity of damage-failure transitions are linked to specific type of critical phenomena in ensembles of typical mesoscopic defects – structural-scaling transition. Taking into account nonlinearity of damage-failure transition the scaling effects were explained as the consequence of subjection of damage kinetics to the intermediate asymptotical (self-similar) solution. This solution has the nature of multiscale blow-up dissipative structures, represents the set of collective modes of defects responsible for the damage localization stage. Original in-situ experiments supported the assumption concerning the role of multiscale blow-up collective modes of defects in qualitative different scenario of dynamic crack propagation, failure of shocked materials, fragmentation statistics.

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Periodical:

Applied Mechanics and Materials (Volume 784)

Pages:

476-483

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.784.476

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Online since:

August 2015

Authors:

Oleg Naimark

Keywords:

Crack Branching, Failure Waves, Fragmentation Statistics, Localization Modes, Multiscale Damage

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