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International Journal of Energetic Materials and Chemical Propulsion
ESCI SJR: 0.149 SNIP: 0.16 CiteScore™: 0.29

ISSN Imprimir: 2150-766X
ISSN En Línea: 2150-7678

International Journal of Energetic Materials and Chemical Propulsion

DOI: 10.1615/IntJEnergeticMaterialsChemProp.v4.i1-6.710
pages 762-773

THE EFFECT OF CHEMICALLY INDUCED STRESSES AND DEFORMATIONS ON THE IGNITION OF SOLID PROPELLANTS

Anna G. Knyazeva
Tomsk Polytechnic University, 30 Lenin Ave., Tomsk, 634050, Russia; Institute of Strength Physics and Materials Science, Siberian Branch of the Russian Academy of Sciences, 2/4 Akademicheskii Ave., Tomsk, 634021, Russia
Vladimir Zarko
ICKC SB RAS

SINOPSIS

A coherent physicochemical approach based on the coupling between chemical and mechanical processes in a solid material is applied to modeling the ignition of solid propellants. Governing equations are derived with account taken for the relationships of nonequilibrium thermodynamics. It is shown that using purely thermal models for the description of ignition of deformable energetic materials may lead to mistakes in determining the global reaction kinetic parameters. Accounting for the contribution of mechanical processes could change the value of the activation energy either in a positive or negative direction, depending on the conditions of heating.