弹塑性结构水下爆炸相似律研究  

Investigation on the Similarity Criterion of Elastic-Plastic Structures Subjected to Underwater Explosion

作　　者：冯麟涵[1] 刘世明[2] 曹宇[3] 张阿漫[4] 

机构地区：[1]海军装备研究院博士后科研工作站,北京100161 [2]中国舰船研究设计中心,湖北武汉430064 [3]中国船舶及海洋工程设计研究院,上海200011 [4]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》2010年第5期1-5,共5页Chinese Journal of Ship Research

基　　金：中国博士后科学基金特别资助项目(200801104);高等学校博士学科点专项科研基金(20070217074)

摘　　要：为实现将缩比模型在遭受水下爆炸冲击波载荷作用时的动响应特性结果推广到预测原型结构,根据相似理论,讨论了水下爆炸冲击波载荷相似率,并推导了弹塑性结构遭受水下爆炸冲击波载荷作用时的完全几何相似律。以典型舰船板架结构为研究对象,设计若干数值算例,结果表明缩比模型与原型结构之间的能量、运动响应和应力响应吻合较好,说明满足该相似率的缩比模型能够准确预测原型结构遭受水下爆炸冲击波载荷作用时的动响应特性,验证了该相似律的实用性。Extending the dynamic response characteristics of scale model under shock wave loading of underwater explosion to the prototype structure prediction,the similarity rate of underwater explosion shock wave loading was examined based on the similarity theory,and then the fully geometric similarity criterion of elastic-plastic structures was obtained.Taking the typical ship gross panel structure as the research object,numerical calculations were carried out.The results show that the energy,motion and stress responses of the scale model agree well with those of the prototype structures,indicating that the scale model meeting the similarity rate can accurately predict the dynamic response characteristics of the prototype structures subjected to underwater explosion,and thus demonstrating the practicability of the similarity criterion.

关 键 词：弹塑性结构 相似理论 水下爆炸 动态响应 

分 类 号：U661.43[交通运输工程—船舶及航道工程]