摘要
反舰武器战斗部在舰船舷侧防护结构内部爆炸将造成舱室的严重破坏,数值模拟是分析结构在爆炸载荷作用下破坏情况的有效手段之一。舱室内部爆炸的数值模拟涉及到冲击波传播、多个流场与结构的耦合、结构的变形与破坏。文章基于MSC.Dytran软件平台,实现了舱室内部爆炸的数值模拟。研究表明,在舱壁开口有利于减小舱室角隅处的汇集压力,保护舱室结构。同时,爆炸产生的二次破片对舱室结构能产生进一步毁伤效果。
Inner explosion in the broadside protective structure of war-ship will cause severe damage, and numerical simulation is one of the most effective ways to analyze the damage condition of structure under explosive loading. Simulation of cabin structure under inner explosion involves the propagation of shock wave, coupling between multiple flow fields with structure, and distortion and failure of the cabin. A numerical study is performed based on MSC-Dytran software. Further investigation shows that the cutout on bulkhead is useful to reduce the stress localization in cabin corner and thus provides protection to cabin structure. Fragments due to explosive can have a secondary destroy to the cabin structure.
出处
《中国舰船研究》
2009年第4期7-11,共5页
Chinese Journal of Ship Research
基金
国防基础研究项目
资助编号(A1420080184)
关键词
舱室结构
多欧拉域耦合
冲击波
二次破片
cabin structure
multiple euler-lagrange couple
shock wave
re-produced fragments
