摘要
兵器水下爆炸时,由于船体边界存在影响了气泡自由膨胀,使气泡上升过程中会朝船体方向运动,气泡被船体吸引破裂后形成的高速水射流是舰船结构毁伤的重要因素。基于Geers&Hunter理论,将射流形状等效为水柱射流,采用数值仿真计算方法研究气泡射流对舰船结构的破坏效应。研究结果表明:气泡射流对船体结构的二次加载压力能使船体外板出现较大范围的塑性变形,使船体结构受到严重二次毁伤。
When the weapon exploded under water, owing to the influence of hull boundary on bubbles expan- sion, the bubbles will move towards the hull, therefore, the high speed water jet is considered as an important factor to the damage on ship structure. Based on the theory of Geers ＆ Hunte, the bubble jet shape is equal to water cylinder, then the damage effect of bubble jet on ship structure was studied by simulation method. Results show that, the see- ondary load from bubble jet on hull structure caused great plastic deformation on the hull plate, which made serious secondary damage on the hull structure.
出处
《爆破》
CSCD
北大核心
2015年第2期47-50,共4页
Blasting
基金
军队支撑创新基金(201210886076HA)
关键词
水下爆炸
气泡
射流
毁伤
underwater explosion
bubble
jet
damage
