Research on Creep Constitutive and Numerical Simulation of Composite Solid Propellant

Through the composite creep solid propellant creep experiment, the composite solid propellant curve is obtained. The power rate constitutive model, linear viscoelastic model and Schapery nonlinear constitutive model are used to describe the creep process. The study shows that Schapery modified nonli...

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Bibliographic Details
Published in:Journal of physics. Conference series 2021-02, Vol.1786 (1), p.12002
Main Authors: Feng, S.X., Qiang, H.F., Liu, Y.X., Wang, X.R., Geng, T.J., Yang, Z.W.
Format: Article
Language:English
Subjects:
Composite propellants
Constitutive models
Creep (materials)
Finite element method
Mathematical models
Model testing
Physics
Solid propellant rocket engines
Solid propellants
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Summary:Through the composite creep solid propellant creep experiment, the composite solid propellant curve is obtained. The power rate constitutive model, linear viscoelastic model and Schapery nonlinear constitutive model are used to describe the creep process. The study shows that Schapery modified nonlinear constitutive model can better describe the creep properties of composite solid propellants. Through the ABAQUS user subroutine, the finite element application of Schapery’s creep-type nonlinear constitutive model is studied. The research results in this paper can provide a reference for the analysis of the creep effect of the grain during the vertical storage of the solid rocket motor.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1786/1/012002