Research on Creep Constitutive and Numerical Simulation of Composite Solid Propellant. Issue 1 (February 2021)

• Record Type: Journal Article
• Authors: Feng, S.X.; Qiang, H.F.; Liu, Y.X.; Wang, X.R.; Geng, T.J.; Yang, Z.W.
• Is Part Of: Journal of physics. Volume 1786:Issue 1(2021)
• Publication Date: 2021-02
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1786/1/012002
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: 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.