高速大长径比火箭弹动态特性分析

The Dynamic Characteristics Analysis of High Speed Slender Rocket

目的 分析高速大长径比火箭弹的动态特性 .方法 建立有限元模型 ,利用 ANSYS软件对火箭弹进行模态分析 .结果 通过有限元分析 ,得到了火箭弹的各阶模态 .结论 通过与实测固有频率的对比 ,验证了模型的合理性及计算的精确性 。

Aim: To analyze the dynamic characteristics of high speed slender rocket. Methods: Build a finite-element model, and use ANSYS software to analyze the vibrating modes of rocket. Results: On the basis of the finite element method every mode of rocket can be calculated. Conclusion: Compared with the natural frequencies in experiment, it has been proved that the model is reasonable and the calculation result is accurate. It provides a valid design method on dynamic characteristics of rocket.