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Volume 33 Issue 09
Sep.  2007
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Journal of Beijing University of Aeronautics and Astronautics  > 2007  >  33(09): 1117-1120.
Li Fei, Sun Lingyu, Zhang Guangyue, et al. Simulation and experiment of cylinder shell structure dropping into water based on fluid structure interaction[J]. Journal of Beijing University of Aeronautics and Astronautics, 2007, 33(09): 1117-1120. (in Chinese)
Citation: Li Fei, Sun Lingyu, Zhang Guangyue, et al. Simulation and experiment of cylinder shell structure dropping into water based on fluid structure interaction[J]. Journal of Beijing University of Aeronautics and Astronautics, 2007, 33(09): 1117-1120. (in Chinese)
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Simulation and experiment of cylinder shell structure dropping into water based on fluid structure interaction

  • Dept. of Automobile Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

  • Received Date: 14 Sep 2006
  • Publish Date: 30 Sep 2007
    Abstract
  • When dropping into water from the air, large cylinder shell structures may suffer larger deformation or collapse due to the strong water impact. To improve the structural crashworthiness, the simulation was done, combined with corresponding experiments. Through the static tensile and dynamic SHPB tests, the nonlinear constitutive relationships of alternative materials were obtained, and the corresponding plastic-kinematic material models were built. Simplified models scaled 1∶ 10 were dropped into water for test, and their simulation was done also. Full sized structure in detail and partial fluid domain were modeled, composed by thin-shell, water and air. Based on the ALE/Lagrange penalty function coupling algorithm without erosion, the process dropping into water was simulated by finite element method(FEM). Then the weakness of original design was found, and an improved scheme was proposed and verified by simulation. The proposed approach is also applicable for other fluid impact problems related to large deformation and nonlinear.

     

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  • [1] Jones N, Wierzbicki T. Structural crashworthiness[M]. London:Butterworths, 1983 [2] 吕振华,上官文斌.基于液-固耦合有限元仿真的液阻悬置集总参数模型动特性分析[J].机械强度,2004,26(1):29-37 Lü Zhenhua,ShangGuan Wenbin. Dynamic char-acteristic analysis of hydraulically damped rubber mount:LP model based on FSI FE simulation[J].Journal of Mechnical Strength, 2004,26(1):29-37(in Chinese) [3] 汪玉,华宏星．船舶现代冲击理论及应用[M]．北京:科学出版社,2005 Wang Yu, Hua Hongxing. Modern impact theory and application of ships [M].Beijing:Press of Science,2005(in Chinese) [4] 汪玉,周璞,刘东岳,等.考虑流-固耦合作用的舰船抗冲击仿真计算[J]. 振动与冲击,2005,24(1):73-79 Wang Yu,Zhou Pu,Liu Dongyue,et al. Numerical simulation of anti-shock behavior of ship considering the fluid-structure interaction in FEM [J]. Journal of Vibration and Shock,2005, 24(1):73-79(in Chinese) [5] Aquelet N,Souli M,Olovsson L. Euler-Lagrange coupling with damping effects:application to slamming problems[J]. Computer Methods in Applied Mechanics and Engineering, 2006(195):110-132 [6] Souli M,Ouahsine A ,Lewin L. ALE formulation for fluid-structure interaction problems[J]. Computer Methods in Applied Mechanics and Engineering, 2000(190):659-675
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