水下爆炸气泡对舰船冲击环境的影响  

Effects of underwater explosion bubble on shock environment of warship

作　　者：曾令玉[1] 蔡尚 王诗平 ZENG Lingyu, CAI Shang, WANG Shiping(1 China Ship Development and Design Center, Wuhan 430064, China; 2 .College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, Chin)

机构地区：[1]中国舰船研究设计中心,湖北武汉430064 [2]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》2018年第3期66-71,共6页Chinese Journal of Ship Research

基　　金：国家自然科学基金资助项目(11672082)

摘　　要：[目的]为了优化舰船冲击环境预报载荷体系及研究气泡脉动压力对舰船冲击环境的影响,[方法]基于ABAQUS有限元分析软件,采用声固耦合方法模拟某舰水下非接触爆炸特性,通过与现有文献实验数据的对比验证该方法的有效性。在此基础上,针对水下爆炸气泡脉动压力进行冲击环境特性的研究。[结果]结果表明:气泡脉动压力对舰船低频响应有放大作用,垂向冲击谱值的影响要大于其他2个方向;上层甲板受气泡脉动的影响仍然较大,验证了甲板低频响应的衰减规律;对水下爆炸实验和冲击环境进行预报时,计算时间选取为1.5倍气泡一次脉动周期才可得到较准确的冲击环境数据,以此来验证海军标的准确性。[结论]研究结果有利于优化舰船冲击环境预报流程中各参数的选取,并可用于指导舰船冲击环境的预报。[Objectives]In order to standardize the load system of a hull＇s shock environment and studythe effects of bubble pulsation pressure on a hull＇s shock environment,[Methods]acoustic-structurecoupling methods are used to simulate a hull subjected to a non-contact underwater explosion. Comparingthe simulation data with the experimental data in the literature,the method is shown to be effective. Onthis basis,the shock environment under bubble pulsation pressure is studied.[Results]The results showthat bubble pulsation pressure has an amplification effect on the low frequency response of a ship,and theinfluence of the vertical shock spectrum is greater than in the other two directions. The upper decks are stillaffected more strongly by bubble pulsation,which verifies the decaying rule of the low frequency responseof decks. To obtain more accurate data,a 1.5 times bubble pulsation cycle each time is recommended forexperiments involving underwater explosion or the prediction of shock environments,which verifies theaccuracy of the navy standard.[Conclusions]The results of this paper can be helpful for standardizing theselection of parameters in the process of shock environments, and provide a reference for shockenvironment forecast research.

关 键 词：水下爆炸 冲击响应 气泡脉动 低频载荷 冲击环境 计算时间 

分 类 号：U661.71[交通运输工程—船舶及航道工程]