摘要
以舰船抗冲击试验非接触爆炸应变测量为应用背景,研究了应变数据的时域及频域分析方法。对舰船缩比模型实施了多个工况的实炸试验,通过对应变数据的时域及频域分析,发现模型在垂向及纵向存在着不同的固有振动频率,并且应变的时域及其频域曲线存在着必然联系,从而可为结构的固有模态及毁伤模式分析提供参考。
An analysis method of strain data in time domain and frequency domain is researched for the strain measurement in anti-shock test on warship under no-contact explosion. Several explosion tests under different conditions are implemented on the scaled model. Based on the analysis of strain data in time domain and frequency domain,it is revealed that there are different natural vibration frequencies in the vertical and longitudinal directions,and there is a certain relationship between the strain curves of time domain and frequency domain.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2014年第S2期358-361,共4页
Acta Armamentarii
关键词
爆炸力学
水下爆炸
舰船抗冲击
应变
数据分析
explosion mechanics
underwater explosion
ship anti-shock
strain
data analysis
