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以大气层内高超声速条件下级间分离过程为对象,研究了利用蒙特卡洛方法对随机偏差干扰下的这一过程进行仿真分析的途径。分析了随机偏差对分离运动的影响,建立了能够支持偏差耦合仿真的分离动力学模型与分离运动特征值计算模型,建立了利用蒙特卡洛方法进行分离过程仿真的具体流程,最后通过算例验证了模型的合理性与仿真方法的有效性。研究结果表明,通过蒙特卡洛方法可实现对随机偏差干扰下高动压分离过程的运动范围、潜在风险以及失败概率进行定量预测。
Taking the process of interstage separation under hypersonic conditions in the atmosphere as an example, the method of using Monte Carlo method to simulate this process under the influence of random deviation has been studied. The influence of random deviation on the separation motion is analyzed. The separation dynamics model and the discrete motion eigenvalue calculation model which support the deviation coupling simulation are established. The specific flow of the separation process simulation by using the Monte Carlo method is established. Finally, The rationality of the model and the validity of the simulation method. The results show that the Monte Carlo method can realize the quantitative prediction of the range of motion, potential risk and failure probability of high dynamic pressure separation process under the influence of random deviation.