摘要
真实再现舰船水下爆炸冲击环境是舰用设备设计和考核的前提。分析了实船水下爆炸响应的时域和频域特征,介绍并评述了设计谱、考核谱的分析方法的现状及其局限性。给出了时域实现的转化方法和路径,并对典型舰用设备进行了数值仿真。研究表明:实船水下爆炸响应可分为冲击波阶段和气泡脉动阶段,且具有三折线谱的特点。基于位移、速度和加速度等效,结合过冲分析,可以从冲击谱得到相应波形的参数。不同安装基础的设备,冲击考核实现方式有一定差异。
The true representation of shock environment of underwater explosion is a precondition of designing and testing the ship equipment. The response characteristics of real ship in frequency domain and time domain under underwater explosion are analyzed. The analysis methods and theirs limitations of design spectrum and test spectrum are introduced and commented on. A method of time-domain conversion is proposed,and the numerical simulation of the typical ship equipment is carried out. The results show that the dynamic response of ship under underwater explosion could be divided into shock wave stage and bubble stage,and presents three-fold spectrum feature. Based on the equivalences of displacement,velocity and acceleration,the parameters of the corresponding waveforms could be gained from the shock spectrum through the analysis of impact overload. There is some difference among the implementation methods of shock test for the equipment on different installed bases.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2015年第S1期78-86,共9页
Acta Armamentarii
关键词
爆炸力学
舰用设备
冲击谱
设计谱
考核谱
explosion mechanics
shipboard equipment
shock spectrum
design spectrum
test spectrum
