一种优化大型浮动冲击平台输入环境的斜挡板结构设计
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摘要
[目的]为了考核在接近实战条件下舰载设备的抗冲击能力,[方法]设计并建造大型浮动冲击平台(LFSP),增加冲击载荷的斜挡板结构,在4种具有不同配重、爆源距离及爆源布深的标准考核工况下,对非标试验系统LFSP提供的冲击环境开展仿真和水下爆炸标定试验。针对试验测量信号的低频成分进行分析及处理,并与仿真结果进行相似性分析。[结果]获得了LFSP在标准工况下所能提供的考核能力,证明斜挡板结构的建立满足规范冲击环境的横垂比要求。[结论]所得结果拓宽了后续的LFSP标定试验范围,有利于对更多的舰载设备进行抗冲击性能试验考核。
[Objectives]In order to assess the shock resistance capability of shipboard equipment in close to actual combat conditions,[Methods]the Large-scale Floating Shock Platform(LFSP)is designed and established,with shock load of the oblique baffle structure increased. Under four different standard assessment conditions with different counterweights,explosion source distances and explosion source depths,the simulation and underwater explosion calibration tests are carried out in the shock environment provided by the non-standard test system of LFSP. After the low frequency components of the test measurement signals are analyzed and processed,the similarity of the test results and the simulation results can be analyzed.[Results]The assessment capability of LFSP is obtained under the standard conditions. The establishment of oblique baffle structure is proven to meet the requirements of transverse and vertical impact strength ratio in the normative shock environment.[Conclusions]The results broaden the scope of the subsequent LFSP calibration test,which is conducive to the shock resistance test assessment on more shipborne equipment.
[Objectives]In order to assess the shock resistance capability of shipboard equipment in close to actual combat conditions,[Methods]the Large-scale Floating Shock Platform(LFSP)is designed and established,with shock load of the oblique baffle structure increased. Under four different standard assessment conditions with different counterweights,explosion source distances and explosion source depths,the simulation and underwater explosion calibration tests are carried out in the shock environment provided by the non-standard test system of LFSP. After the low frequency components of the test measurement signals are analyzed and processed,the similarity of the test results and the simulation results can be analyzed.[Results]The assessment capability of LFSP is obtained under the standard conditions. The establishment of oblique baffle structure is proven to meet the requirements of transverse and vertical impact strength ratio in the normative shock environment.[Conclusions]The results broaden the scope of the subsequent LFSP calibration test,which is conducive to the shock resistance test assessment on more shipborne equipment.
引文
[1]US Navy.Military specification:shock tests.H.I.(high-impact)shipboard machinery,equipment,and systems,requirements:MIL-S-901D[S].New York,USA:U.S.NAVY,1989:70-72.
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[4]Botta F,Cerri G.Shock response spectrum in plates under impulse loads[J].Journal of Sound and Vibration,2007,308(3/4/5):563-578.
[5]宋敬利,焦安龙,沈晓乐.浮动冲击平台海上爆炸试验实施方法[J].爆破,2014,31(4):96-98,106.Song J L,Jiao A L,Shen X L.Implementation of floating platform explosion test[J].Blasting,2014,31(4):96-98,106(in Chinese).
[6]李国华,李玉节,张效慈,等.浮动冲击平台水下爆炸冲击谱测量与分析[J].船舶力学,2000,4(2):51-60.Li G H,Li Y J,Zhang X C,et al.Shock spectrum measurement and analysis of underwater explosion on a floating shock platform[J].Journal of Ship Mechanics,2000,4(2):51-60(in Chinese).
[7]陈高杰,周庆飞,王树乐,等.小型浮动冲击平台水下爆炸数值仿真与验证[J].电子测量技术,2016,39(4):42-44,52.Chen G J,Zhou Q F,Wang S L,et al.Numerical simulation test and validation of a small floating shock platform subjected to undex[J].Electronic Measurement Technology,2016,39(4):42-44,52(in Chinese).
[8]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,2009,29(12):60-63.Zhang W.Numerical simulation for shock resistivity of shipboard equipment on floating shock platform[J].Journal of Vibration and Shock,2009,29(12):60-63(in Chinese).
[9]王军.浮动冲击平台冲击动力特性研究[D].哈尔滨:哈尔滨工程大学,2015.Wang J.Research on the impact dynamic characteristics of the floating shock platform[D].Harbin:Harbin Engineering University,2015(in Chinese).
[10]国防科学技术工业委员会军标中心.军用设备环境试验方法冲击试验:GJB150.18-1986[S].北京:中国标准出版社,1986.STIC Military Standards Center.Environmental test methods for military equipment-shock test:GJB150.18-1986[S].Beijing:Standards Press of China,1986(in Chinese).
[11]Ahlin K.Comparison of test specifications and measured field data[J].Sound and Vibration,2006,40:22-24.
[12]Gromov A A,Ivashin N A,Sobolev M D.Piezoelectric acceleration transducer with increased resistance to zero shift[J].Measurement Techniques,2009,52(3):286-291.
[2]FRG Ministry of Defense Equipment Technology and Procurement.Code for ship construction-impact safety:BV0430/85[S].Koblenz:FRG Ministry of Defense Equipment Technology and Procurement,1985.
[3]Parzianello G,Francesconi A,Pavarin D.An estimation method for the shock response spectrum propagating into plates subjected to hypervelocity impact[J].Measurement,2010,43(1):92-102.
[4]Botta F,Cerri G.Shock response spectrum in plates under impulse loads[J].Journal of Sound and Vibration,2007,308(3/4/5):563-578.
[5]宋敬利,焦安龙,沈晓乐.浮动冲击平台海上爆炸试验实施方法[J].爆破,2014,31(4):96-98,106.Song J L,Jiao A L,Shen X L.Implementation of floating platform explosion test[J].Blasting,2014,31(4):96-98,106(in Chinese).
[6]李国华,李玉节,张效慈,等.浮动冲击平台水下爆炸冲击谱测量与分析[J].船舶力学,2000,4(2):51-60.Li G H,Li Y J,Zhang X C,et al.Shock spectrum measurement and analysis of underwater explosion on a floating shock platform[J].Journal of Ship Mechanics,2000,4(2):51-60(in Chinese).
[7]陈高杰,周庆飞,王树乐,等.小型浮动冲击平台水下爆炸数值仿真与验证[J].电子测量技术,2016,39(4):42-44,52.Chen G J,Zhou Q F,Wang S L,et al.Numerical simulation test and validation of a small floating shock platform subjected to undex[J].Electronic Measurement Technology,2016,39(4):42-44,52(in Chinese).
[8]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,2009,29(12):60-63.Zhang W.Numerical simulation for shock resistivity of shipboard equipment on floating shock platform[J].Journal of Vibration and Shock,2009,29(12):60-63(in Chinese).
[9]王军.浮动冲击平台冲击动力特性研究[D].哈尔滨:哈尔滨工程大学,2015.Wang J.Research on the impact dynamic characteristics of the floating shock platform[D].Harbin:Harbin Engineering University,2015(in Chinese).
[10]国防科学技术工业委员会军标中心.军用设备环境试验方法冲击试验:GJB150.18-1986[S].北京:中国标准出版社,1986.STIC Military Standards Center.Environmental test methods for military equipment-shock test:GJB150.18-1986[S].Beijing:Standards Press of China,1986(in Chinese).
[11]Ahlin K.Comparison of test specifications and measured field data[J].Sound and Vibration,2006,40:22-24.
[12]Gromov A A,Ivashin N A,Sobolev M D.Piezoelectric acceleration transducer with increased resistance to zero shift[J].Measurement Techniques,2009,52(3):286-291.