固体火箭发动机喷管模态分析

Mode Analysis of the Nozzle in SRM

针对某固体发动机喷管结构 ,建立计算模型 ,给出了用大型特征值问题求解的子空间迭代法。并对某喷管整体结构进行了自由振动和模态分析 ,获得了该喷管模型的多阶自振频率和模态。

Based on a nozzle structure in solid rocket motor, a calculation model is developed. The vibration and mode analysis of the model using subspace iteration method are presented in the paper. The numerical results of free vibration frequencies and modes are also obtained through analyzing the integrated nozzle structure. The analysis results are fit to the test data very well.