基于力-热双应力加速试验的橡胶减振结构寿命预测研究  

Research on Life Prediction of Rubber Vibration Damping Structure Based on Mechanical-thermal Double Stress Accelerated Test

作　　者：李贵杰 胡鹏 谢朝阳[1] 葛任伟[1] 汪亚顺 LI Gui-jie;HU Peng;XIE Chao-yang;GE Ren-wei;WANG Ya-shun(Institute of Systems Engineering,China Academy of Engineering Physics,Mianyang 621999,China;School of Aeronauticsand Astronautics,Dalian University of Technology,Dalian 116024,China;The first Military Representative Roomof the PLA Rocket Force Armament Department in Mianyang Region,Mianyang 621999,China;Schoolof Intelligent Science,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]中国工程物理研究院总体工程研究所,四川绵阳621999 [2]大连理工大学航空航天学院,辽宁大连116024 [3]火箭军装备部驻绵阳地区第一军事代表室,四川绵阳621999 [4]国防科技大学智能科学学院,长沙410073

出　　处：《装备环境工程》2021年第12期25-30,共6页Equipment Environmental Engineering

基　　金：国家自然科学基金(11702281);核科学挑战专题(TZ2018007);技术基础(JSZL20172121A001)。

摘　　要：目的针对橡胶减振结构寿命试验时间较长,寿命预测困难的问题,建立了力-热双应力情况下的橡胶减振结构加速试验方法,并给出寿命预测模型。方法首先,分析影响橡胶减振结构寿命的主要因素,建立典型橡胶减振结构的双应力加速试验方法,并开展加速退化试验。基于加速退化试验获得的试验数据,采用广义艾林模型作为双应力加速模型,Weibull分布作为寿命模型,建立了减振结构的双应力加速退化试验数据的分析方法。结果预测了使用温度为25℃,压缩率为5%情况下,在给定可靠度0.9987时,减振结构贮存寿命约为9 a。结论所建立的方法能够较好地预测减振结构的使用寿命。In order to solve the problem of long life test time of rubber vibration damping structure,firstly,the main factors affecting the life of vibration damping structure are identified,then the mechanical-thermal double stress accelerated test method of the typical vibration damping structure is construction,and the accelerated degradation test scheme is proposed.Based on the data obtaining from the accelerated degradation test,a data analysis method for the double stress accelerated degradation test of vibration damping structures is established.In this paper,the generalized Eyring model and Weibull distribution are chosen as the double stress accelerated model and life model,respectively.Based on the proposed method,the storage life of the vibration absorption structure with temperature of 25℃and compression rate of 5%is predicted to be about 9 years when the given reli-ability is 0.9987.The proposed method can effectively predict the operating life of the vibration-damping structure.

关 键 词：减振结构 双应力加速试验 寿命预测 可靠性 加速模型 

分 类 号：V214[航空宇航科学与技术—航空宇航推进理论与工程] TB114[理学—概率论与数理统计]