固化降温过程中固体火箭发动机材料参数的影响分析

Influence of Solid Rocket Engine Material Parameters when Solidifying

给出了药柱在固化降温过程中的热传导和热应力分析的基本方程,且应用有限元法对固体火箭发动机药柱在固化冷却过程中的三维瞬态温度场进行了数值模拟.同时得出了药柱危险点的位置.然后模拟了推进剂参数对危险点的应力应变值的灵敏度.计算结果符合工程实际.

The paper gives the basic equation of heat conduction and heat-stress analysis during the process of grains being solidified. The finite element method is used to make a numerical simulation of three dimensional transient temperature field on the solidification of solid rocket engine. Meanwhile, the grains danger position is given. At the end, the sensitivity of which propellant parameter changed with the stain and stress of danger position is simulated. The calculated result is keeping with the actuality of engineering.