丁羟固体推进剂力学性能模拟计算

提出了丁羟固体推进剂力学性能的三相结构模型(分散相-界面相-连续相),建立了丁羟固体推进剂力学性能与弹性母体的伸长率和弹性模量、推进剂组分固体含量、粒径、级配、粘合剂和键合剂等的数学关系,进行了编程计算;推进剂抗拉强度和伸长率的计算结果与实验值吻合较好,并用该软件计算研究了弹性母体的伸长率及模量?AP的粒径及级配?键合剂的含量等对推进剂力学性能的影响规律。

Modeling for mechanical properties of HTPB solid propellants

Three-phase(dispersion phase,interface phase, and continuous phase) HTPB solid propellants mechanical properties constitutive model was proposed.With this model,the relationship between propellant mechanical properties and elongation and modulus of elastomer,content of solid particles,particle size and gradation,bonding agent content,etc.were constructed mathematically.Computer program based on the model was developed to predict the effects of elongation and modulus of elastomer,AP particle size and gradation, and bonding agent content on propellant mechanical properties.The results of calculation of propellant tensile strength and elongation were in good agreement with experiments.