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DDAM法和时域模拟法是舰船设备抗冲击性能设计与评估的主要计算方法,两种方法冲击输入载荷条件的等效性和预报结果的等效性直接影响其适用范围.对舰用设备在水下爆炸作用下的冲击环境描述的系统分析,提出了频域计算方法和时域计算方法所要求冲击输入载荷的等效条件.利用算例比较了等效冲击输入下舰用设备冲击响应计算结果的差异,通过定量分析明确了不同计算方法在舰船设备抗冲击性能分析中的适用阶段和范围,为舰船设备抗冲击设计和评估提供参考.
The DDAM method and the time domain simulation method are the main calculation methods for the design and evaluation of the impact resistance of ship equipment. The equivalence of the impact loading conditions and the equivalence of the prediction results of the two methods directly affect the scope of application. In the system analysis of the impact environment under the underwater explosion, the equivalent conditions of the shock input load required by the frequency domain calculation method and the time domain calculation method are proposed. The impact response of the ship equipment with equivalent impact input is compared Through the quantitative analysis, the applicable stage and scope of different calculation methods in the anti-impact performance analysis of ship equipment are clarified, which can provide references for the design and evaluation of anti-impact of ship equipment.