摘要
采用2阶DAA流固解耦技术,对水下爆炸载荷作用下细长体圆柱壳结构的鞭状响应进行分析研究。经模型试验验证后,对细长体圆柱壳梁模型随不同药包爆炸方位、不同爆距及不同低频振动频率耦合程度变化时的鞭状响应进行计算,揭示圆柱壳梁模型在水下爆炸载荷作用下的总体低频运动特性及鞭状响应规律,为研究细长体圆柱壳结构在水下爆炸载荷作用下的鞭状效应总体损伤提供试验基础及理论方法。
The whipping response of slender cylindrical shell subjected to underwater explosion was investigated in this paper. The double asymptotic approximation method （DAA） was employed to describe the coupling effect of the dynamic distortion of the structure and the transient flow field, and model experiments were implemented to validate the method. The whipping response characteristic of slender cylindrical shell to underwater explosion was researched in different testing cases, and the research results may be helpful for understanding the underwater explosion induced dynamic behavior of underwater structures.
出处
《噪声与振动控制》
CSCD
2012年第6期44-48,共5页
Noise and Vibration Control
