全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
工程力学  2014 

冲击波作用下水下结构载荷计算方法

DOI: 10.6052/j.issn.1000-4750.2013.03.0168, PP. 11-16

Keywords: 比例边界有限元法,反射波压力,无限水域,水下冲击,流固耦合,瞬态分析

Full-Text   Cite this paper   Add to My Lib

Abstract:

针对冲击波激励下水下结构与无限声学水域的流固耦合问题,建立了冲击波及无限水域作用在结构上的载荷计算方法。该方法采用场分离技术将水下结构载荷分解为冲击波压力及散射波压力,而散射波压力又分解成反射波压力和辐射波压力。基于比例边界有限元法,建立反射波压力计算方法,而辐射波压力由有限元商业软件的声固耦合技术确定。该文利用该方法在商业有限元软件中分析了一经典算例,分析结果表明该方法能有效模拟冲击波作用下水下结构载荷及其响应,避免了冲击波在无限流体中传播的有限元分析,降低了分析规模。

References

[1]  H. Underwater explosion [M]. New Jersey: Princeton University Press, 1948: 228―233.
[2]  Y S. Ship shock modeling and simulation for far-field underwater explosion [J]. Computers and Structures, 2004, 82(23/24/25/26): 2211―2219.
[3]  S C, Li S M, Yu G Y. Dynamic fluid-structure interaction analysis using boundary finite element method-finite element method [J]. Journal of Applied Mechanics, ASME, 2005, 72(4): 591―598.
[4]  C H, Shin Y S. Numerical simulation of surface shield effects to waterblast wave [J]. Ocean Engineering, 2013, 60: 99―114.
[5]  胡毅亭, 董明荣, 等. 深水环境中水下爆炸冲击波作用下圆柱壳动态响应的数值模拟研究[J]. 振动与冲击, 2008, 27(5): 160―165. Jia Xianzhen, Hu Yiting, Dong Mingrong, et al. Dynamic response of cylindrical shell subjected to underwater explosion shock waves in deep water [J]. Jounal of Vibration and Shock, 2008, 27(5): 160―165. (in Chinese)
[6]  Q K, Ding G Y. A finite element analysis of ship sections subjected to underwater explosion [J]. International Journal of Impact Engineering, 2011, 38(7): 558―566.
[7]  A M, Ren S F, Li Qing, Li Jia. 3D numerical simulation on fluid-structure interaction of structure subjected to underwater explosion with cavitation [J]. Applied Mathematics and Mechanics, 2012, 33(9): 1191―1206.
[8]  J P, Song C. Consistent infinitesimal finite element cell method: three-dimensional scalar wave equation [J]. Journal of Applied Mechanics, ASME, 1996, 63(3): 650―654.
[9]  S M, Fan S C. Parametric analysis of a submerged cylindrical shell subjected to shock waves [J]. China Ocean Engineering, 2007, 21(1): 125―136.
[10]  杨文山, 姚熊亮, 等. 基于场分离的水下爆炸流固耦合计算方法[J]. 爆炸与冲击, 2011, 31(3): 295―299. Guo Jun, Yang Wenshan, Yao Xiongliang, et al. Underwater explosion calculation with a field separation technique [J]. Explosion and Shock Waves, 2011, 31(3): 295―299. (in Chinese)
[11]  H. Hydrodynamics [M]. 6th ed. New York: Dover, 1932: 476―477.
[12]  宗智, 张文鹏. 水下冲击波作用下结构损伤的数值预报误差分析[J]. 中国舰船研究, 2011, 6(6): 38―44. Zhang Yifan, Zong Zhi, Zhang Wenpeng. Error analysis of numerical prediction of structure damages subjected to underwater shock [J]. Chinese Journal of Ship Research, 2011, 6(6): 38―44. (in Chinese)
[13]  H. An exact analysis of the transient interaction of acoustic plane waves with a cylindrical elastic shell [J]. Journal of Applied Mechanics, ASME, 1970, 37(4): 1091―1099.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133