Nonlinear Viscoelastic Analysis of Double Base Propellant

Jin Sheng Xu; Yu Tao Ju; Chang Sheng Zhou

doi:10.4028/www.scientific.net/AMR.591-593.1147

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 591-593Nonlinear Viscoelastic Analysis of Double Base...

Nonlinear Viscoelastic Analysis of Double Base Propellant

Abstract:

This study presents the characterization of the nonlinearly viscoelastic behavior of double base propellant (DBP) using Schapery-type constitutive model in the different conditions of temperature, strain level and strain rate. A recursive-iterative numerical algorithm is generated for the Schapery-type nonlinearly viscoelastic constitutive and implemented in a displacement-based ﬁnite element (FE) code for ABAQUS user material subroutines. Then, the model parameters are obtained by analyzing the response of creep-recovery tests and constant rate tensile tests at different temperatures, strain levels and strain rates. And find a linear relationship between temperatures and the effective stresses which determine the limit of linear viscoelactic. The FE model with the calibrated time-dependent and nonlinear material parameters is used to simulate the creep-recovery tests and the constant rate tensile tests, and reasonable predictions are shown.

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Periodical:

Advanced Materials Research (Volumes 591-593)

Pages:

1147-1151

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.591-593.1147

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Online since:

November 2012

Authors:

Jin Sheng Xu, Yu Tao Ju, Chang Sheng Zhou

Keywords:

Creep Recovery, Double Base Propellant, Nonlinear, Recursive, Viscoelastic

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