固体火箭发动机结构意外爆炸的数值模拟与风险评估

针对固体火箭发动机装配作业过程中可能发生的意外爆炸事故，只考虑冲击波对人的伤害作用，利用显式动力学软件AUTODYN分别对单发产品与双发产品的爆炸过程进行了数值模拟研究。模拟过程中得到了三维空间压力与监测点压力随时间的变化规律。研究结果表明:单发产品爆炸时在X方向上与Y方向上的死亡半径分别为20.5 m和22.0 m，双发产品爆炸时在X方向上与Y方向上的死亡半径分别为24.0 m和32.0 m；死亡半径和冲击波超压的增长与爆炸产品数量的增长呈现非线性关系。

Numerical Simulation and Risk Assessment of Accidental Explosion of Solid Rocket Engine Structure

Aiming at the accidental explosion that may occur during the assembly process of solid rocket motors, the explicit dynamics software AUTODYN was used to numerically study the explosion process of single-engine products and double-engine products by considering only the harmful effects of shock waves on people. Pressure distribution within the three-dimensional space and the changes in their values at the monitoring point were obtained by simulation. Results show that the death radiuses are 20.5m and 22.0m, respectively, in the X direction and the Y direction for the single-shot product, and 24.0m and 32.0m, respectively, in the X direction and the Y direction for the double-shot product. Increase in the radius of death and shock wave overpressure has a nonlinear relationship with the increase in the number of explosive products.