摘要
依据ＳｃｈａｐｅｒｙＲＡ［１］的粘弹性断裂理论，对国产ＨＴＰＢ复合推进剂进行了Ｉ型型纹扩展实验。分析了裂纹扩展的特性，表明裂纹扩展开始时存在临界应力强度因子ＫＩＣ．得出了该型推进剂裂纹扩展速率ｄａ／ｄｔ与应力强度因子ＫＩ间的幂函数关系式。讨论了该推进剂材料断裂能与裂纹扩展速率的关系。
In this paper, guided by Schapery's theory of viscoelastic fracture, a model crack growth experiment was conducted with of HTPB composite propellant.Crack growth behavior was analyzed, showing that at the beginning of crack growth the critical stness intensity factor KIC exists. The power functional relationship of this propellant between crack growth rate da/dt and stress intensity factor KI was determined. The relationship between the fracture energy of this propellant and crack growth rate was discussed.
出处
《推进技术》
EI
CAS
CSCD
北大核心
1994年第6期88-92,共5页
Journal of Propulsion Technology
关键词
端羟基聚丁二烯
推进剂
裂纹扩展
应力强度因子
Hydroxy terminated polybutadiene propellant, Crack propagation,Stress intensity factor, Stress test
