| 考虑泊松比的固体发动机装药贮存寿命预估 |
| |
| 引用本文： | 职世君,孙冰,张建伟.考虑泊松比的固体发动机装药贮存寿命预估[J].固体火箭技术,2011,34(5):593-597. |
| |
| 作者姓名： | 职世君 孙冰 张建伟 |
| |
| 作者单位： | 北京航空航天大学宇航学院,北京,100191 |
| |
| 摘 要： | 以含单个小孔隙的立方体为代表性体积单元,结合弹性力学公式,推导了固体推进剂空穴率与瞬时泊松比的关系,得到泊松比随推进剂老化的变化规律.通过固体推进剂加速老化试验,得到固体推进剂瞬时模量及最大延伸率随贮存时间的变化规律.以固体推进剂瞬时模量和瞬时泊松比为老化参数,结合三维粘弹性有限元计算方法,计算了某发动机装药结构不同贮...
|
| 关 键 词： | 固体推进剂 泊松比 空穴率 有限元法 贮存寿命 |
Storage life prediction for solid rocket motor grain in consideration of Poisson's ratio |
| |
| ZHI Shi-jun,SUN Bing,ZHANG Jian-wei.Storage life prediction for solid rocket motor grain in consideration of Poisson's ratio[J].Journal of Solid Rocket Technology,2011,34(5):593-597. |
| |
| Authors: | ZHI Shi-jun SUN Bing ZHANG Jian-wei |
| |
| Institution: | ZHI Shi-jun,SUN Bing,ZHANG Jian-wei(School of Astronautics,Beijing University of Aeronautics and Astronautics,Beijing 100191,China) |
| |
| Abstract: | A cube that contains a single small pore was taken as a representative volume element(RVE),Combined with elasticity formula,the relationship between solid propellant void content and the instantaneous Poisson's ratio was deduced,and the change law of Poisson's ratio with solid propellant aging was obtained.The change laws of instantaneous modulus' evolution and maximum elongation rate of propellant with storage time were obtained through the propellant accelerated aging test.With instantaneous modulus and i... |
| |
| Keywords: | solid propellant Poisson's ratio void content finite element method storage life |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
