摘要
由固体火箭发动机药柱变形过程中的体积不变原理,推导出内压作用下圆管药柱内表面环向应变与壳体环向应变的关系式。利用这一关系式,可由壳体圆筒的环向应变预报药柱内表面的环向应变,在发动机工作过程中可对药柱内表面环向应变进行实时监测。给出了药柱m数的确定方法,表明m数不仅与最大工作压强、药柱力学性能有关,也与壳体结构,及其材料的力学性能参数有关。在最大工作压强作用下,得到了壳体圆筒所允许的最大环向应变。
According to the volume constant principle during motor grain deformation, the relationship between inner surface hoop strain for grain and case hoop strain under internal pressure was deduced. By using this relationship, inner surface hoop strain of the grain was predicted based on the case hoop strain and the real-time monitoring for grain inner surface hoop strain was conduc- ted.The determination method for the number of m was given.The number of m is related to maximum working pressure, mechanical behavior of grain, case structure and mechanical properties of materials.Under the effect of maximum working pressure, the permissi- ble maximum hoop strain of case tube is obtained, which provides theoretical basis for the case structure rigidity cheek.
出处
《固体火箭技术》
EI
CAS
CSCD
北大核心
2013年第6期763-765,794,共4页
Journal of Solid Rocket Technology
关键词
固体火箭发动机
药柱
壳体
应变
m数
solid rocket motor
grain
case
strain
the number of m
