摘要
运用单向拉伸手段,研究了不同拉伸速率(0.5～500 mm/min)、测试温度(25～70℃)对NEPE推进剂最大抗拉强度σm和最大伸长率εm的影响。试验结果发现,NEPE推进剂σm和εm均与拉伸速率v呈幂律函数关系,建立了相关性较好的幂函数方程σm=k(T)va和εm=f(T)vb。利用该方程,对极慢拉伸速率下NEPE推进剂σm和εm进行了预示,计算结果可为固体火箭发动机设计及推进剂贮存性能研究提供技术支持。
The effects of different tensile rate （0.5 - 500 mm/min）, test temperature （25 - 70 ℃ ） on the maximum tensile strength and elongation rate of NEPE propellant were investigated by means of unilateral tensile method. The experimental results show that the maximum tensile strength （σm,） and elongation rate （ εm, ） of NEPE propellant present power-law function relation with tensile rate （v）. Power function σm = k （T） v^a and εm, =f（T） v^b with good correlation were derived. The maximum tensile strength and elongation rate of NEPE propellant under extremely low tensile rate condition were predicted by means of the power function, and the calculation resuhs can provide reference to investigation on storage performance of propellant and design of SRM.
出处
《固体火箭技术》
EI
CAS
CSCD
北大核心
2007年第4期321-323,327,共4页
Journal of Solid Rocket Technology
基金
国防973项目(61337)
