The Mesoscopic Numerical Simulation of GAP/CL20/AP Composite Solid Propellant Based on MPM and FEM
نویسندگان
چکیده
In this paper, first, the meso-debonding process of a GAP/CL20/AP composite solid propellant under uniaxial tension was analyzed using advantages material point method (MPM) and finite element (FEM) for first time; then, numerical simulation results were compared with experiments. Based on basic principle modeling method, grains different sizes generated quickly efficiently. Next, dispersed into particles, position information particles mapped onto background grid, so grids used to determine grains. After that, AP CL20 imported commercial software Abaqus through python scripting codes calculation. macro-mechanical tests micro-numerical simulation, paper studies micro-internal mechanism that affects properties propellants. Three interface parameters needed be determined by parameter inversion, value objective interpolation function minR 0.05078%. From comparison, it found are in good agreement experimental aspects micro-crack cracking characteristics nominal stress–strain curve influence discussed. The research has high scientific engineering application can provide important reference guidance design propellants its mechanical property analyses, as solve structural integrity problem rocket motor charges.
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ژورنال
عنوان ژورنال: Applied sciences
سال: 2023
ISSN: ['2076-3417']
DOI: https://doi.org/10.3390/app13074552