Numerical Analysis of Mesostructure Damage for Composite Solid Propellant Using a Combined XFEM-Cohesive Zone Model

Jiu Ling Zhao; Bo Gao; Jiu Fen Zhao

doi:10.4028/www.scientific.net/AMM.551.71

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 551Numerical Analysis of Mesostructure Damage for...

Numerical Analysis of Mesostructure Damage for Composite Solid Propellant Using a Combined XFEM-Cohesive Zone Model

Abstract:

Composite solid propellant is a particulate composite with high volume fraction and wide size distribution, macroscopic mechanical behavior of SP is strongly depended on its mesostructure. This work presents a numerical analysis of mesostructure damage for SP based on XFEM and CZM method. A simplified physical model is used for the validation of the proposed method. It is shown that the result of crack extension agrees with experiment of Micro CT scan on the whole. Numerical simulations also indicate the fact that initiation of SP damage takes place at the interface of particle and matrix. At last, the relations of macroscopic strain and stress of SP with 55% volume fraction and 65% volume fraction AP are predicted based on mesostructure simulation and compared with experiments.

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Periodical:

Applied Mechanics and Materials (Volume 551)

Pages:

71-76

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.551.71

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Online since:

May 2014

Authors:

Jiu Ling Zhao*, Bo Gao, Jiu Fen Zhao

Keywords:

Cohesive Zone Model (CZM), Composite Solid Propellant (SP), Extended Finite Element Method (XFEM), Mesostructure Damage

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