U型折叠式夹层板抗水下非接触爆炸性能数值计算研究  

Numerical Simulation Analysis on the Protective Performance of U-shape Folded Sandwich Panel Subjected to Underwater Non-Contact Explosion

作　　者：吴敌[1] 吴广明[1] 

机构地区：[1]中国舰船研究设计中心,上海201108

出　　处：《船舶与海洋工程》2016年第1期29-35,共7页Naval Architecture and Ocean Engineering

摘　　要：金属折叠式夹层板在舰船结构的应用逐渐增多,对其抗水下非接触爆炸冲击性能的研究具有实际工程意义。以U型折叠式夹层板为研究对象,基于ABAQUS计算传统加筋板和夹层板在典型水下非接触爆炸工况下的响应,对变形模式、速度加速度响应及吸能模式进行对比分析,最后分别改变夹层板结构参数,研究夹层板结构参数对抗爆性能的影响。结果表明:U型夹层板的抗爆性能优于加筋板结构;增加夹层板面板厚度和芯层板厚能增强其抗爆性能,但吸能效率降低;芯层-面板夹角>60°时,抗爆性能相对优秀;在不超过特定尺寸时,芯层单元宽度影响较小。As more and more metal folded sandwich panel are used in ship structures, the study on the protective performance of the panel subjected to the underwater non-contact explosion becomes practically important for engineering. When U-shape folded sandwich panel is taken as the research object, both the responses of conventional stiffened panel and sandwich panel subjected to typical underwater non-contact explosion are computed with ABAQUS to analyze and compare the deformation, velocity and acceleration responses as well as energy absorption modes. Finally, the structural parameters of the sandwich panel are changed to study the influence on the panel protective performance against explosion. The result shows that U-shape sandwich panel has better anti-explosion performance than the stiffened structure. Increasing the thickness of plate layer and sandwich layer can enhance the anti-explosion performance, but it will reduce the energy absorption efficiency. When the angle between the sandwich layer and the plate layer is larger than 60°, the anti-explosion performance is relatively good. In case the specific dimension is not exceeded, there is little influence on the width of the sandwich layer unit.

关 键 词：U型折叠夹层板 水下爆炸 抗爆防护性能 参数 

分 类 号：U661.43[交通运输工程—船舶及航道工程]