某型炮射导弹膛内运动时期药柱的应力应变分析  

Stress and Strain Analysis of a Gun-launched Solid Rocket Motor Propellant Grain during the Launching Process

作　　者：王海清 隋欣[1] 丁娜仁花 宋长健 李世鹏[1] 王宁飞[1] 

机构地区：[1]北京理工大学宇航学院,北京100081 [2]天津中德应用技术大学航空航天学院,天津300350

出　　处：《弹箭与制导学报》2017年第3期49-54,共6页Journal of Projectiles,Rockets,Missiles and Guidance

摘　　要：炮射导弹发射过程中承受上万个g的过载,固体推进剂药柱的应力应变分析极为关键。文中采用有限元方法对药柱在发射过程中的应力应变进行数值模拟,分别对比研究轴向过载、旋转载荷和药柱-挡药板之间摩擦对药柱整体最大von Mises应力和最大应变变化的影响规律。结果表明,考虑旋转和药柱-挡药板之间摩擦的情况下,药柱整体最大von Mises应力和最大应变都显著增加,而且药柱-挡药板之间摩擦将直接影响药柱最大von Mises应力和最大应变发生的区域。During the process of launching, the gun-launched rocket is always subjected to a very high overload, even more than 10^4 gTherefore, the stress and strain analysis of solid propellant grains is of great significance. In this paper, we used the finite element software to simulate the stress and strain of the grain structure during the launching process, conducting a comparative study on the effects of axial load, rotating load and grain-retaining plate friction on the maximum yon Mises stress and maximum principal strain of the grain. The resuits showed that considering rotating load and the grain-retaining plate friction, the maximum van Mises stress and the maximum principal strain of whole grain will be significantly increased, and the grain-retaining plate friction will affect the distribution of maximum yon Mises stress and the maximum principal strain.

关 键 词：炮射导弹 固体火箭发动机 推进剂药柱 应力应变分析 

分 类 号：V435[航空宇航科学与技术—航空宇航推进理论与工程]