单壳体潜艇在气泡脉动载荷作用下的响应规律研究  

Response Regularity of Single-Hull Submarine Subject to the Bubble Pulsation Load

作　　者：岳永威[1] 王超[1] 朱枫[1] 王奂钧[1] 

机构地区：[1]哈尔滨工程大学船舶工程学院,黑龙江哈尔滨150001

出　　处：《中国舰船研究》2012年第2期42-49,共8页Chinese Journal of Ship Research

基　　金：国家自然科学基金项目(50939002;50809018)

摘　　要：基于Geers与Hunter提出的自由场气泡脉动载荷计算方法,利用开尔文冲量法分析气泡自由场假设成立的条件,并将简单结构的计算结果同试验值进行对比,验证了所用算法的有效性。通过对简化的单壳体潜艇结构在不同气泡工况下响应的求解分析,得出如下结论:当气泡与边界距离大于其半径的3倍时,可忽略结构对气泡运动的影响;声固耦合法可有效求解结构在气泡脉动下的响应;在低频气泡脉动载荷激励下,结构的一阶及三阶垂向运动被激起,且以一阶运动为主;结构一阶垂向湿频率与气泡脉动的频率相差一定时,结构频率与其鞭状运动幅度呈负相关趋势;当气泡脉动频率与结构湿频率接近时,结构的响应出现峰值。Based on the Geers and Hunter＇s Method of the bubble pulsation load in free field,the condition of free-field assumption was analyzed in this paper through the Kelvin Impulse Method.And the comparison of calculated results with the experimental data was carried out which indicated the validity of the algorithm.Analysis of different bubble responses of the simplified single-hull submarine structure shows that： when the distance between bubble and the structure is three times greater than bubble radius,the impact of structure to the bubble can be ignored;the response of structure subject to bubble pulsation can be solved effectively by the vibro-acoustic coupling method;under the low-frequency bubble pulsation load,the first-order and third-order vertical movement of the structure is aroused with the former as main style;when the first-order wet frequency of the structure differs from that of bubble pulsation with constant value,the trend of negative correlation is presented between the structure frequency and whip-like amplitude;when the frequency of bubble pulsation is close to the wet frequency of the structure,the peak of structure response appears.

关 键 词：Geers与Hunter模型 气泡脉动 水下爆炸 结构振动 潜艇 

分 类 号：U661.43[交通运输工程—船舶及航道工程]