甲板模拟器对浮动冲击平台冲击环境的调节数值分析
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摘要
[目的]为研究安装了甲板模拟器的浮动冲击平台(FSP)系统对舰载设备考核的机理,[方法]建立平台—甲板模拟器—设备系统有限元模型和力学模型,并开展数值模拟分析。通过改变甲板模拟器的固有属性,提出以不同的甲板模拟器调节设备考核中的冲击输入,以满足设备冲击试验的要求。[结果]结果表明:当未安装设备时,甲板模拟器上的冲击谱曲线在自身固有频率处出现峰值;而安装设备时,不同的甲板模拟器可实现对冲击谱峰值的控制。[结论]因此,甲板模拟器与设备的相互作用改变了设备安装频率附近范围的冲击谱峰值,可以实现对设备冲击输入的调频作用。
[Objectives]In order to study the mechanism of shipborne equipment assessment in Floating Shock Platform(FSP) system equipped with deck simulator,[Methods]the platform-deck simulator-equipment system finite element model and mechanical model are established, and the numerical simulation analysis is carried out. By changing the inherent properties of the deck simulator,it is proposed that different deck simulators are used to regulate the shock input of the equipment assessment to meet the shock test requirements of equipment.[Results]The numerical results show that,when the equipment is not installed,the shock spectrum curve of the deck simulator has a peak value at its natural frequency;when the equipment is installed,the peak value of the shock spectrum can be controlled by different deck simulators.[Conclusions]Therefore,the interaction between the equipment and the deck simulator changes the peak value of the shock spectrum near the installation frequency of the equipment,to regulate the frequency in shock input of the equipment.
[Objectives]In order to study the mechanism of shipborne equipment assessment in Floating Shock Platform(FSP) system equipped with deck simulator,[Methods]the platform-deck simulator-equipment system finite element model and mechanical model are established, and the numerical simulation analysis is carried out. By changing the inherent properties of the deck simulator,it is proposed that different deck simulators are used to regulate the shock input of the equipment assessment to meet the shock test requirements of equipment.[Results]The numerical results show that,when the equipment is not installed,the shock spectrum curve of the deck simulator has a peak value at its natural frequency;when the equipment is installed,the peak value of the shock spectrum can be controlled by different deck simulators.[Conclusions]Therefore,the interaction between the equipment and the deck simulator changes the peak value of the shock spectrum near the installation frequency of the equipment,to regulate the frequency in shock input of the equipment.
引文
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[7]张玮.利用浮动冲击平台考核舰用设备抗冲击能力的数值仿真研究[J].振动与冲击,2010,29(12):60-63.Zhang W.Numerical simulation for shock resistivity of shipboard equipment on floating shock platform[J].Journal of Vibration and Shock,2010,29(12):60-63(in Chinese).
[8]崔杰,李烨,陈莹玉,等.舰船全船冲击环境数值预报方法研究[J].振动与冲击,2015,34(17):88-93.Cui J,Li Y,Chen Y Y,et al.Numerical prediction methods for shock environmental of ship's entire hull[J].Journal of Vibration and Shock,2015,34(17):88-93(in Chinese).
[9]Li J,Rong J L.Experimental and numerical investigation of the dynamic response of structures subjected to underwater explosion[J].European Journal of Mechanics,2012,32:59-69.
[10]Shin Y S.Ship shock modeling and simulation for far-field underwater explosion[J].Computers&Structures,2004,82(23/24/25/26):2211-2219.
[2]宋敬利,张玉涛.某浮动冲击平台外载荷与冲击环境分析[J].兵器装备工程学报,2016,37(9):16-19.Song J L,Zhang Y T.External load and shock environment analysis of a floating shock deck[J].Journal of Ordnance Equipment Engineering,2016,37(9):16-19(in Chinese).
[3]王军,姚熊亮,杨棣.浮动冲击平台冲击环境对设备响应的影响[J].爆炸与冲击,2015,35(2):236-242.Wang J,Yao X L,Yang D.Impact analysis of shock environment from floating shock platform equipment response[J].Explosion and Shock Waves,2015,35(2):236-242(in Chinese).
[4]蒋国岩,金辉,王永亮,等.浮动平台在远场爆炸载荷作用下的冲击响应研究[J].兵工学报,2010,31(增刊):37-40.Jiang G Y,Jin H,Wang Y L,et al.Study on shock response of floating platform subjected to far-field explosion[J].Acta Armamentarii,2010,31(Supp 1):37-40(in Chinese).
[5]王军,郭君,姚熊亮.冲击波作用下浮动冲击平台的刚体响应分析[J].华中科技大学学报(自然科学版),2015,43(2):71-75.Wang J,Guo J,Yao X L.Rigid response analysis of floating shock platform subjected to underwater shockwaves[J].Journal of Huazhong University of Science and Technology(Natural Science Edition),2015,43(2):71-75(in Chinese).
[6]王军,姚熊亮,郭君.应用浮动冲击平台考核舰载设备响应分析[J].爆炸与冲击,2015,35(6):832-838.Wang J,Yao X L.Guo J.Response analysis of shipboard equipment under test on floating shock platform[J].Explosion and Shock Waves,2015,35(6):832-838(in Chinese).
[7]张玮.利用浮动冲击平台考核舰用设备抗冲击能力的数值仿真研究[J].振动与冲击,2010,29(12):60-63.Zhang W.Numerical simulation for shock resistivity of shipboard equipment on floating shock platform[J].Journal of Vibration and Shock,2010,29(12):60-63(in Chinese).
[8]崔杰,李烨,陈莹玉,等.舰船全船冲击环境数值预报方法研究[J].振动与冲击,2015,34(17):88-93.Cui J,Li Y,Chen Y Y,et al.Numerical prediction methods for shock environmental of ship's entire hull[J].Journal of Vibration and Shock,2015,34(17):88-93(in Chinese).
[9]Li J,Rong J L.Experimental and numerical investigation of the dynamic response of structures subjected to underwater explosion[J].European Journal of Mechanics,2012,32:59-69.
[10]Shin Y S.Ship shock modeling and simulation for far-field underwater explosion[J].Computers&Structures,2004,82(23/24/25/26):2211-2219.