The results show that the stresses are inhomogeneous in the composite propellant and debonding cracks are usually generated in the p ole of propellant.

• 建立了颗粒填充复合推进剂的细观有限元模型,计算了颗粒与基体粘结完好和存在脱粘两种情况下颗粒与基体内的应力分布,分析了复合推进剂的细观失效机理。