HTPB推进剂蠕变试验及长期蠕变性能研究  

Research on Creep Experiment and Long-term Creep Performance of HTPB Propellant

作　　者：吴轩 黄薇[1] 许进升[1] 郑健[1] 周长省[1] 董军超 WU Xuan;HUANG Wei;XU Jinsheng;ZHENG Jian;ZHOU Changsheng;DONG Junchao(School of Mechanical Engineering,Nanjing University of Science and Technology,Key Laboratory of Special Power Technology,Ministry of Education,Nanjing 210094,China;Beijing University of Aeronautics and Astronautics,School of Reliability and Systems Engineering,Beijing 100088,China;Beijing Institute of Strength and Environment,Reliability Center,Beijing 100076,China)

机构地区：[1]南京理工大学机械工程学院特种动力技术教育部重点实验室,南京210094 [2]北京航空航天大学可靠性与系统工程学院,北京100088 [3]北京强度环境研究所,北京100076

出　　处：《强度与环境》2024年第5期8-13,共6页Structure & Environment Engineering

基　　金：国家自然科学基金(12072122);北京强度环境研究所联合创新基金(BQJJ202308)。

摘　　要：为研究HTPB推进剂蠕变性能及长期贮存的力学性能,在常温下对HTPB推进剂进行了应力水平分别为0.15 MPa、0.2 MPa、0.25 MPa、0.3 MPa和0.35 MPa的单轴拉伸蠕变试验,利用广义Kelvin蠕变模型拟合蠕变模型参数,分析了加载应力对蠕变的加速作用,利用时间-应力等效原理得到了HTPB推进剂的0.15 MPa蠕变柔量主曲线,并将预测曲线与试验曲线进行验证。结果表明,二阶广义Kelvin模型对各组蠕变数据拟合结果与试验曲线吻合,推导得到蠕变柔量主曲线的蠕变时间达到10^(4.77)s,为试验时间的49倍,可以用于预测推进剂的长期蠕变行为及实际应用。In order to study the creep and mechanical properties of HTPB propellant in long-term storage,uniaxial tensile creep tests were carried out at room temperature,and the stress levels were 0.15 MPa,0.2 MPa,0.25 MPa,0.3 MPa and 0.35 MPa respectively.The generalized Kelvin creep model was used to fit the parameters of the creep model,and the acceleration effect of loading stress on creep was analyzed.Based on the time-stress superposition principle,the main curve of 0.15 MPa creep compliance of HTPB propellant was obtained.The results show that the fitting results of each group of creep data by the second-order generalized Kelvin model are consistent with the experimental curves,and the creep time of the main curve of creep compliance is 10^(4.77) s,which is 45.8 times that of the experimental time.The model can be used to predict the long-term creep behavior of propellant and its practical application.

关 键 词：HTPB推进剂 蠕变模型 时间-应力等效原理 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] V512.3[航空宇航科学与技术—航空宇航推进理论与工程]