A Study of Experimental Method for Mechanical Properties of Solid Propellant under Hydrostatic Compressive Loading

Abstract

Mechanical behavior of solid propellant material under multi-axial loads has attracted much attention in engineering application. According to the properties of solid propellant material, a kind of triaxial compressive device for solid propellant material was designed by utilizing the operating principle of the soil triaxial compressive device. The structural features and operating principle were expounded, and some notes should be paid attention during tests, and mechanical properties of a kind of double-base propellant material under hydrostatic loading were investigated, and some very meaningful data and conclusions were obtained. The results show that the yield strength and compressive strength of double-base propellant material under hydrostatic loading have obtained more remarkable enhancement than those without the hydrostatic pressure effect. The experimental device and the test results may lay the foundation for further research into a viscoelastic-plastic constitutive model of solid propellant material.