针对水下非接触爆炸缩比模型试验相似规律问题，本文基于相似理论，在满足单值条件的前提下，讨论了单值物理量对水下爆炸冲击因子的影响。舰船结构毁伤模式局限在塑性大变形范围内时，本文从单值量相似的角度出发推导了水下非接触爆炸冲击波平面波效应条件下的一种新型冲击因子。本文以某型舰船的典型平板、加筋板架和船舯舱段结构为研究对象，采用数值模拟与试验相结合的方法，在不同缩尺比条件下，从目标结构的变形挠度、变形速度和应力变化三个方面评估新型冲击因子的有效性。结果表明，新型冲击因子较传统冲击因子在模型试验向原型转化精度方面有较大提升。
Abstract
Aiming at the similarity problem of underwater non-contact explosion scale model test, this paper adopts similarity theory to discuss the influence of single value physical quantity on the impact factor of underwater explosion under the premise of satisfying the single value condition. When the damage mode of the ship structure is limited to the large plastic deformation range, this paper derives a new type of impact factor under the condition of the plane wave effect of the underwater non-contact explosion shock wave from the angle of similar single value. This paper takes the typical flat plate, stiffened plate frame and midship section structure of a certain type of ship as the research object, adopts the method of combining numerical simulation and experiment, under different scale ratio conditions, from the deformation deflection and deformation speed of the target structure and stress changes to evaluate the effectiveness of the new impact factor. The results show that the new impact factor has a greater improvement in the accuracy of the model test to the prototype conversion than the traditional impact factor.
关键词
水下爆炸 /
相似理论 /
单值条件 /
单值物理量 /
冲击因子 /
平面波效应
{{custom_keyword}} /
Key words
Underwater explosion /
Similarity theory /
Single value condition /
Single-valued physical quantity /
Impact factor /
Plane wave effect;
{{custom_keyword}} /
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] 水下爆炸[M]. 国防工业出版社 , (美)库尔,P.著, 1960.
[2] 张效慈.水下爆炸试验相似准则[J].船舶力学,2007(01):108-118.
Zhang Xiaoci. Similarity criterion for underwater explosion test[J]. Ship Mechanics, 2007(01): 108-118.
[3] 胡宏伟,宋浦,王建灵,郭炜,徐洪涛,金鹏刚,任松涛.炸药水中爆炸冲击因子的新型计算方法[J].爆炸与冲击,2014,34(01):11-16.
Hu Hongwei, Song Pu, Wang Jianling, Guo Wei, Xu Hongtao, Jin Penggang, Ren Songtao. A New Calculation Method for Explosive Impact Factors in Water[J]. Explosion and Shock, 2014, 34(01): 11- 16.
[4] 谢耀国,姚熊亮.水下爆炸条件舰船舱段局部强度仿真试验研究[J].武汉理工大学学报,2014,36(07):66-72.
Xie Yaoguo, Yao Xiongliang. Simulation test study on the local strength of ship cabin under underwater explosion conditions[J]. Journal of Wuhan University of Technology, 2014, 36(07): 66-72.
[5] 姚熊亮,郭君,曹宇,冯麟涵.在水下爆炸冲击波作用下的新型冲击因子[J].中国造船,2008(02):52-60.
Yao Xiongliang, Guo Jun, Cao Yu, Feng Linhan. A new type of shock factor under the action of underwater explosion shock wave[J]. China Shipbuilding, 2008(02): 52-60.
[6] DE A，NIEMIEC A，ZIMMIE T F . Physical and numerical modeling to study effects of an underwater explosion on a buried tunnel［J］. Journal of Geotechnical and Geoenvironmental Engineering，2017，143（5）：04017002.
[7] Z. Wei et al. The resistance of metallic plates to localized impulse[J]. Journal of the Mechanics and Physics of Solids, 2007, 56(5) : 2074-2091.
[8] Hu Jing, Chen Zuyu, Wei Yingqi, Zhang Xuedong, Liang Jianhui, Zhang Zitao. Impact factor of underwater explosion considering spherical wave effect[J]. Journal of Hydraulic Engineering, 2018, 49(10): 1227-1235.
[9] 李德聪,郑绍文,吴国民.关于水下中远场爆炸相似律与冲击因子的讨论[J].兵工学报,2015,36(S1):46-52.
Li Decong, Zheng Shaowen, Wu Guomin. Discussion on the similarity law and impact factor of underwater mid-to-far field explosion[J]. Acta Armamentarii, 2015, 36(S1): 46-52.
[10] 量纲分析[M].中国科学技术大学出版社，谈庆明著，2005.
[11] 缪旭弘,钱德进,姚熊亮,黄超.基于ABAQUS声固耦合法的水下结构声辐射研究[J].船舶力学,2009,13(02):319-324.
Miao Xuhong, Qian Dejin, Yao Xiongliang, Huang Chao. Research on acoustic radiation of underwater structures based on ABAQUS sound-structure coupling method [J]. Ship Mechanics, 2009, 13(02): 319-324.
[12] Jinwon Kim and L. Mahrt. Simple formulation of turbulent mixing in the stable free atmosphere and nocturnal boundary layer[J]. Tellus A: Dynamic Meteorology and Oceanography, 2016, 44(5) : 381-394.
{{custom_fnGroup.title_cn}}
脚注
{{custom_fn.content}}
PDF(5136 KB)
