In this paper,the research progress of solid propellant creep properties was reviewed from three aspects:finite element analysis method,creep damage experiment design and creep damage research method.It was pointed out that the creep property lead to the meso-damage between particles and matrix in the solid propellant.The shortcomings in the present creep experimental research and numerical simulation of multi-scale property were summarized.The analysis showed that the creep experimental research difficulty lied in the research on the correspondence and data mapping relationship between the experi-mental results of propellant material grade and the creep effect of propellant in the actual charge structure;while the numerical simulation difficulty was the establishment of a multi-scale constitutive model of propellant damage creep and the application calculation of deformation prediction of propellant columns under self-weight load.Finally,the suggestions can provide some references for the study in solid propellant creep damage properties with long-term storage.
维普
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