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工程力学  2013 

砰击荷载下金字塔点阵夹层板动力响应分析与估算

DOI: 10.6052/j.issn.1000-4750.2012.07.0556, PP. 277-285

Keywords: 轻质金字塔点阵夹层平板结构,三相数值模型,最大变形,准静态,局部气垫

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Abstract:

该文以轻质金字塔点阵夹层平板结构为对象,对其在不同撞水速度下(1m/s~6m/s)的流-固耦合动力学行为进行数值和理论计算分析。首先建立了气-液-固三相数值模型,通过详细计算获得了砰击压力的分布特征与结构砰击变形特征,分析表明当砰击压力脉宽和结构自振周期(湿模态)之比大于4时流-固耦合效应不显著。与同等质量实体板相比,轻质金字塔点阵夹层平板平均流-固砰击压力与结构最大变形均显著降低,而且存在#x0201c;局部气垫#x0201d;现象(在实体平板撞水的过程中未发现该效应)。提出一种将砰击变形位移场分解为总体变形和局部变形,然后进行叠加的计算模型,该种工程近似计算方法获得的变形估算值与数值计算结果吻合较好。

References

[1]  Szymanski O A. Handbook of ship structure mechanics (Vol 2) [M]. Shanghai: Shanghai Science and Technology Press, 1966: 542―543. (in Chinese)
[2]  王展光, 单建, 何德坪. 金字塔栅格夹心夹层板动力响应分析[J]. 力学季刊, 2006, 27(4): 707―713.
[3]  Wang Zhanguang, Shan Jian, He Deping. Dynamic response analysis of sandwich plates with pyramidal truss cores [J]. Chinese Quarterly of Mechanics, 2006, 27(4): 707―713. (in Chinese)
[4]  中国科学院力学研究所. 夹层板壳的弯曲、稳定性和振动[M]. 北京: 科学出版社, 1977: 93―234.
[5]  Institute of Mechanics, Chinese Academy of Sciences. Bending, vibration and stability of sandwich plates and shells [M]. Beijing: Science Press, 1977: 93―234. (in Chinese)
[6]  Timoshenko S, Woinowsky-Krieger S. Theory of plates and shells [M]. New York: McGraw-Hill, 1959: 6―228.
[7]  Karman V T. The impact on sea plane floats during loading [R]. 1929, NACA-TN-321.
[8]  Wagner H. Loading of seaplane [R]. 1932, NACA-TN- 622.
[9]  Chuang S L. Investigation of impact of rigid and elastic bodies with water [R]. 1970, NSRDC-TR-3248.
[10]  Faltinsen O M. Water entry of a wedge hydroelastic orthotropic plate theory [J]. Journal of Ship Research, 1999, 43(3): 180―193.
[11]  Berezniski A. Slamming: the role of hydroelasticity [J]. International Shipbuilding Progress, 2001, 48(4): 333―351.
[12]  何春涛, 王聪, 闵景新, 等. 回转体匀速垂直入水早期空泡数值模拟研究[J]. 工程力学, 2012, 29(4): 237―243.
[13]  He Chuntao, Wang Cong, Min Jingxin, et al. Numerical simulation of early air-cavitation of cylinder cone with vertical water-entry [J]. Engineering Mechanics, 2012, 29(4): 237―243. (in Chinese).
[14]  Stenius I, Rosen A, Kuttenkeuler J. Hydroelastic interaction in panel-water impacts of high-speed craft [J]. Ocean Engineering, 2011, 38(2/3): 371―381.
[15]  Panciroli R, Abrate A, Mindk G, et al. Hydro-elasticity in water-entry problems: Comparision between experi- mental and SPH results [J]. Composite Structures, 2012, 94(2): 532―539.
[16]  Kwon Y W, Owens A C. Dynamic responses of composite structures with fluid-structure interaction [M]// Brahim A. Advances in Composite Materials- Ecodesign and Analysis. London: In Tech Press, 2011: 137―158.
[17]  Baral N, Cartie D R, Partridge I K, et al. Improved impact performance of marine sandwich panels using through-thickness reinforcement: experimental results [J]. Composite Part B: Engineering, 2010, 41(2): 117―123.
[18]  Greenspon J E. Sea tests of the U.S.C.G.C. Unimak (Part 3) [R]. DTMB-TR-978, 1956.
[19]  汪浩, 程远胜, 刘均, 等. 新型矩形蜂窝夹芯夹层加筋圆柱壳抗水下爆炸冲击载荷性能分析[J]. 振动与冲击, 2011, 30(1): 162―166, 226.
[20]  Wang Hao, Cheng Yuansheng, Liu Jun, et al. Anti-shock analysis for new type rectangular honeycomb sandwich stiffened cylindrical shells subjected to underwater explosion shock load [J]. Journal of Vibration and Shock, 30(1): 162―166, 226. (in Chinese)
[21]  LSTC. LS-DYNA keyword user#x02019;s manual (Version 970) [M]. LSTC Corporation, 2003.
[22]  Yuzuru F. On the impulsive of circular plate falling upon water surface [J]. Journal of Zosen Kiokai, 1954, 94(1): 105―110.
[23]  McKirgan J. Characterization of aluminum 6061-T6 tube for high-rate loading applications [R]. Naval Surface Warfare Center Carderock Division Technical Report, 2004.
[24]  Jones N. Slamming damage [J]. Journal of Ship Research, 1973, 17(2): 80―86.
[25]  薛大为. 板壳理论[M]. 北京: 北京工业学院出版社, 1988: 107―116.
[26]  Xue Dawei. Theory of plate and shell [M]. Beijing: Beijing Institute of Technology Press, 1988: 107―116. (in Chinese)
[27]  岳亚丁. 流-固冲击压力和流-固冲击下的结构动力屈曲[D]. 武汉: 华中理工大学, 1991.
[28]  Yue Yading. The fluid-solid impact pressure and the dynamic buckling of structures under fluid-solid impact load [D]. Wuhan: Huazhong University of Science and Technology, 1991. (in Chinese)
[29]  Orchi M K. Ship slamming-hydrodynamic impact between waves and ship bottom forward [M]// Greenspon J E. Fluid-Solid Interaction, Washington: ASME, 1967: 223―240.
[30]  Biggs J B. Introduction to structural dynamics [M]. New York: McGraw-Hill, 1964: 36―78.
[31]  斯曼斯基O A. 船舶结构力学手册(第二卷) [M]. 上海: 上海科学技术出版社, 1966: 542―543.

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