|
|||||
|
|
| 环境温度对发动机药柱影响分析 | |
| 引用本文： | 潘文庚,王晓鸣,陈瑞,刘文强.环境温度对发动机药柱影响分析[J].南京理工大学学报(自然科学版),2009,33(1). |
| 作者姓名： | 潘文庚 王晓鸣 陈瑞 刘文强 |
| 作者单位： | 1. 南京理工大学,机械工程学院,江苏,南京,210094;徐州空军学院,航空弹药系,江苏,徐州,221000 2. 南京理工大学,机械工程学院,江苏,南京,210094 3. 徐州空军学院,航空弹药系,江苏,徐州,221000 |
| 摘 要： | 基于黏弹性模型,在环境恒温及周变载荷作用下,对某发动机管状药柱热应力进行了仿真,得到了药柱内应力场分布规律.结果表明:在恒温加载时,发现在距药柱对称轴0.103 7 m处附近应力取得了最大值,导致药柱应力剧烈变化,说明该处附近为固体发动机的热应力危险部位;在温度周变载荷作用下,在离壳体表面0.015 15 m附近出现应力最大值,同时发现药柱材料的微观结构发生错位,而这种错位继续发展就会出现宏观裂纹,最终导致发动机药柱脱粘而失效,从而影响弹道性能等. |
| 关 键 词： | 贮存 发动机药柱 温度场 有限元 黏弹性 应力 |
Effect of Environmental Temperature on Storage Rocket Motor Grain |
|
| PAN Wen-geng,WANG Xiao-ming,CHEN Rui,LIU Wen-qiang.Effect of Environmental Temperature on Storage Rocket Motor Grain[J].Journal of Nanjing University of Science and Technology(Nature Science),2009,33(1). | |
| Authors: | PAN Wen-geng WANG Xiao-ming CHEN Rui LIU Wen-qiang |
| Institution: | 1.School of Mechanical Engineering;NUST;Nanjing 210094;China;2.Department of Aviation Ammunition;Xuzhou Air Force College;Xuzhou 221000;China |
| Abstract: | Based on a constitutive model of viscoelastic materials,numerical simulation is carried out on the thermal load of some engine tubular charge under the load of constant or week change environment temperature.The stress field distribution rule of the motor grain is obtained.The result shows that the maximal stress causing the motor grain stress to change fiercely appears at the place of 0.103 7 m away from the pellet axis under constant temperature load,and it is the dangerous area of the solid motor caused ... |
| Keywords: | storage motor grains temperature fields finite element viscoelasticity stresses |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |