摘要
用轻气炮驱动飞片技术对复合推进剂进行了动态压缩和层裂实验，选用有机硅橡胶衬底材料，利用压阻计测得了复合推进剂中的层裂信号。结果表明，复合推进剂在动态压缩条件下主要表现为固体颗粒高氯酸铵的破碎，即首先在固体颗粒中产生微裂纹，在动加载下呈脆性断裂性质；测得的层裂压力曲线与典型的层裂信号明显不同。同时，采用细观分析方法得到了一个描述固体推进剂断裂的简化脆性损伤模型，并利用本文模型模拟了层裂过程，计算结果与实验测试曲线一致性较好。
The dynamic compaction and spall response of a composite solid propellant has been studied by a series of planar light-gas gun impacts.The pressure histories between the propellant and the buffer were measured by manganin gauge.The results show that the fracture of ammonium perchlorate is essential to the growth of fracture and spalls behave in a brittle crack mode for a composite propellant.A simplified dynamic brittle fracture model is pressented for solid propellant.Comparison of numerical and experimental results shows that this new model describes the spallation of solid propellant successfully.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
1995年第2期47-50,共4页
Acta Armamentarii
