舰艇冲击响应数据滤波频率选取方法分析

由于冲击响应数据具有较强烈的非线性与瞬态性，研究难度较大，目前在舰艇抗冲击技术研究领域还没有相应的标准规范或统一的滤波频率选取方法。本文利用冲击响应的冲量信息变化情况作为滤波频率选取依据，给出了具体的分析方法及判据。并应用该方法分别分析了舰艇船体结构与设备的冲击响应数据滤波频率，结论如下：不同爆距，船体结构同一部位，冲击响应数据的滤波频率取值相同；不同爆距，舰艇同一设备相同部位，冲击响应数据的滤波频率取值不同。

Study on the Filtering Frequency of the Warship Shock Response Data

The filtering frequency of shock response is difficult to study due to its obvious character of transient and non-linearity in the course of shock response of warship. So far there is no standard or uniform method of choosing filtering frequency for anti-shock research. The specific analysis method and criterion is provided in this article by using impulse information variance of shock response as the method of choosing filtering frequency. The shock response filtering frequency of the shipbuilding structure and equipment has been analyzed by our method. The results show that the shock response filtering frequency is equivalent as for the same shipbuilding structure but different as for the same ship equipment in the different distance of explosion.