【摘要】 发动机模态参数是检验发动机有限元动力模型、进行振动响应分析的基本数据.本文选用锥壳单元,介绍了轴对称旋转壳模态分析方法.计算了发动机壳体和喷管的固有频率和振型,并与实验结果进行了对比分析.更多还原

【Abstract】 Model parameters are used to verify finite element dynamic model and to analyse vibration response .Model analysis method with cone shell element for axisymmetric shell is discussed in this paper.Model parameters of case and nozzle of solid rocket motors are obtained and compared with test data.更多还原