The mesoscopic damage analysis of composite solid propellant under different temperature
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HOU Yüfei, XU Jinsheng, LI chunlei, LI Hui, PANG Songlin
HTPB composite solid propellant is a kind of multi-particle filled energetic material, and its damage process is complex. In order to analysis the mesoscopic damage behavior of composite solid propellant, the molecular dynamics method is adopted to establish packing model. According to the experiment and simulation analysis under different temperature conditions, the result show that high or low ambient temperature makes debonding of the particle/matrix interface more likely to occur. The debonding of the particle/matrix interface reduces the modulus and results in nonlinear mechanical behavior of composite solid propellant.
HTPB solid propellant, exponential traction separate law, temperature, dewetting