舰艇冲击响应数据滤波频率选取方法分析

摘要

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.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.%The filtering frequency of shock response is difficult to study due to its obvious features of transient and non-linearity in course of shock response of a warship.So far,there is no standard or uniform method of choosing filtering frequency for anti-shock study.The specific analysis method and criterion were provided here by taking impulse information variation of shock response as the basis of choosing filtering frequency.The shock response filtering frequencies of a shipbuilding structure and an equipment were analyzed with the proposed method.The results showed that the shock response filtering frequencies are same for the same part of the shipbuilding structure with different balst distances,but they are different for the same part of the ship equipment with different explosion distances.