温度交变条件下固体推进剂贮存寿命评估  

Storage Life Evaluation of Solid Propellant Under Alternating Temperature Conditions

作　　者：董海平[1] 张静静 魏小琴[2,3] 赵方超 陆韡[4] 李晗 DONG Haiping;ZHANG Jingjing;WEI Xiaoqin;ZHAO Fangchao;LU Wei;LI Han(State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China;Southwest Institute of Technology and Engineering,Chongqing 400039,China;Key Laboratory of Ammunition Storage Environmental Effect,CSGS,Chongqing 400039,China;Shanghai Aerospace Chemical Application Research Institute,Huzhou,Zhejiang 313002,China)

机构地区：[1]北京理工大学爆炸科学与技术国家重点实验室,北京100081 [2]西南技术工程研究所,重庆400039 [3]中国兵器装备集团弹药贮存环境效应重点实验室,重庆400039 [4]上海航天化工应用研究所,浙江湖州313002

出　　处：《北京理工大学学报》2022年第5期479-484,共6页Transactions of Beijing Institute of Technology

摘　　要：针对固体推进剂在温度交替变化下贮存寿命评估难的问题,提出一种基于修正Coffin-Manson模型的寿命评估方法.首先,利用固体推进剂在多个加速应力水平下的温度循环加速退化数据,采用线性回归方法获得性能退化曲线;然后,结合失效阈值确定不同加速应力水平下的伪寿命;最后,采用多元回归方法确定加速模型—修正Coffin-Manson模型,进而外推正常条件下固体推进剂贮存寿命.采用本方法评估某固体推进剂在实际应力水平下的贮存寿命为16.7 a,与实际贮存寿命相比误差约为7.22%,表明该方法具有有效性和可行性,可以推广到其他固体推进剂或弹药在温度交替变化环境下的贮存寿命评估.A life evaluation method based on modified Coffin-Manson model was proposed for the solid propellant stored in alternating temperature environments for a long time. Firstly, based on the temperature cycling acceleration degradation test data, the performance degradation curve of a solid propellant at different accelerated stress levels was obtained by the linear regression method. Then, combined with the failure threshold, the pseudo life at different acceleration stress levels was calculated according to the performance degradation model at the corresponding acceleration stress level. Finally, a multiple regression method was used to determine the acceleration model—modified Coffin-Manson model, which can be used to extrapolate the storage life of a solid propellant stored at room temperature. The storage life of a solid propellant is 16.7 years at room temperature by this new method. Compared with the actual storage life, the error is about 7.22%. The result indicates that this method is effective and feasible and can be applied to evaluate the storage life of other solid propellants or ammunition stored in an alternating temperature environment for a long time.

关 键 词：固体推进剂 贮存寿命 修正Coffin-Manson模型 温度循环试验 加速退化试验 

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