Modeling of the failure front in the structure of a composite material with the observing of convective combustion

Convective combustion presents intensive exothermic chemical transformations occurring due to the heating of the material and the start of chemical transformations in the final layer of the parent material as a result of the convection of heated gas or liquid from the combustion area into the reacti...

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Bibliographic Details
Main Authors: Leitsin, V. N., Dmitrieva, M. A., Ponomarev, S. V., Ishchenko, A. N., Ponomarev, S. A.
Format: Conference Proceeding
Language:English
Subjects:
Combustion
Composite materials
Deformation mechanisms
Exothermic reactions
Failure
Filtration
Heating
Modelling
Organic chemistry
Porosity
Reaction products
Transformations
Wave propagation
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Summary:Convective combustion presents intensive exothermic chemical transformations occurring due to the heating of the material and the start of chemical transformations in the final layer of the parent material as a result of the convection of heated gas or liquid from the combustion area into the reactive material through a chain of interconnected pores. The convective combustion in an initially proof reactive material is possible provided that a system of through pores is formed immediately before the combustion front in the process of failure of the original structure of the reactive material. However, the actual mechanisms of these processes are unclear. The common features of all models used to study the conditions for the transition of layered combustion to convective are the application of approaches of the mechanics of multiphase media and various hypotheses about the launch of chemical transformations due to heat transfer from filtering heated reaction products and heating due to a viscoplastic dissipation of pore collapse energy. The topical issues are the estimates of the resonance mode of the formation of a through porosity system ahead of the front of chemical transformations of an impenetrable heterogeneous system that includes discrete components capable of intensive chemical transformations, initiator particles. In this paper, we present a new approach to modeling and investigating the failure of a reactive composite medium ahead of the propagation wave front, from the position of the dynamics of a deformed heterogeneous object with a structure.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.5013796