The Influence of Interphase on Mechanical Properties of Propellant-liner

The adhesive system of propellant-liner with interphase is taken as a research object to investigate the influence of interphase. The structure response in various thicknesses, elastic modulus and Poisson's ratio of the interphase was calculated by two-dimensional viscoelastic finite element method. The results show that the stress concentration of the propellant weakens distinctly when the thickness increases. The bigger the elastic modulus is, the more serious the stress concentration of the propellant is. The Poisson's ratio has little effect on the stress of the system. The numerical simulation results supply references to interface design.