水下爆炸气泡载荷作用下船体梁的动态水弹性响应  

Dynamic hydro-elastic response of a ship hull girder subjected to underwater explosion bubbles

作　　者：张弩[1,2] 宗智[2] 

机构地区：[1]中国舰船研究设计中心,武汉430064 [2]大连理工大学工业装备结构分析国家重点实验室船舶工程学院,辽宁大连116024

出　　处：《船舶力学》2015年第5期582-591,共10页Journal of Ship Mechanics

基　　金：创新研究群体科学基金资助项目(50921001);国家重点基础研究发展计划(973计划)资助项目(2010CB832704)

摘　　要：文章基于势流理论,针对水下爆炸气泡脉动载荷作用下船体梁的动态水弹性鞭状响应及其共振效应进行了研究。阐述了水下爆炸气泡与船体梁之间的流固耦合理论分析,并分别建立了一个考虑气泡迁移,自由面效应和气泡阻力的气泡模型和一个船体梁的弹性响应的计算模型。文中以两条实船作为算例,研究了刚体运动对船体梁弹性振动响应的影响,分析了船体梁在气泡脉动载荷作用下产生的共振破坏的机理。This paper based on the potential flow theory, studied the dynamic hydro-elastic whipping response and the resonance effect of a ship hull girder subjected to underwater explosion bubbles. A theory of interaction between gas bubbles and a hull girder is presented. A bubble model with the bubble migration, free surface effect and drag force taken into consideration and an elastic hull girder model are established. Two different examples of real ships are given to demonstrate the effect of rigid-body motion on hull girder＇s hydro-elastic responses. Resonance mechanism in the hull girder＇s elastic response to underwater bubbles is discussed.

关 键 词：水下爆炸 气泡 船体梁 弹性响应 刚体运动 共振 

分 类 号：TV131.2[水利工程—水力学及河流动力学] U661.41[交通运输工程—船舶及航道工程]