Dynamic buckling and reliability analysis of a cylindrical thin shell for supercavitating vehicles

被引：0
作者：
机构：
[1] Department of Aerospace Engineering, Harbin Engineering University
来源：
Wang, J.-F. | 1600年 / Chinese Vibration Engineering Society卷 / 33期
关键词：
Dynamic buckling; Limited step length iteration method; Reliability; Step-by-step equivalent plane method; Step-by-step searching method;
D O I：
10.13465/j.cnki.jvs.2014.08.005
中图分类号：
学科分类号：
摘要：
Firstly, a supercavitating vehicle was modeled as a cylindrical thin shell loaded with a axial dynamic load. The dynamic stability differential equations and the unstable regions of the shell were deduced. Secondly, the safety margin equations for its dynamic buckling were given and linearized with the limited step length iteration method considering the randomness of axial load. Then, the step-by-step searching method was proposed to search those effective safety margin equations. Finally, the reliability index of the dynamic buckling was calculated with the step-by-step equivalent plane method. Through numerical examples, the influences of change of load frequency, velocity and proportional coefficient of load on the dynamic buckling reliability were analyzed, respectively. The calculation results provided a theoretical basis for choosing the safety range of load frequency, velocity and proportional coefficient of load.
引用
收藏
页码：22 / 28
页数：6
相关论文
共 11 条
  • [1] Ruzzene M., Dynamic buckling of periodically stiffened shells: Application to supercavitating vehicles, International Journal of Solids and Structures, 41, 3-4, pp. 1039-1059, (2004)
  • [2] Edward A., Vipperla V., Ramana G., Et al., Structural response and optimization of a supercavitating torpedo, Finite Elements in Analysis and Design, 41, 6, pp. 563-582, (2005)
  • [3] Shi L.-H., Wang A.-W., Numerical study on dynamic stability of supercavitating vehicles subjected to axial loads, Journal of Vibration and Shock, 30, 2, pp. 55-59, (2011)
  • [4] Song X.-H., An W.-G., Liu M., Dynamic stability analysis of supercavitating projectile subjected to axial periodic load, Journal of Harbin Engineering University, 33, 10, pp. 1238-1243, (2012)
  • [5] Gu Y.-W., An W.-G., An H., Analyzing of buckling resistance of an underwater elasticbody experiencing high speed motion, Journal of Harbin Engineering University, 29, 7, pp. 5683-5686, (2008)
  • [6] Zhou L., An W.-G., An H., Structural buckling reliability analysis of underwater ventilated supercavitating vehicles, Engineering Mechanics, 29, 7, pp. 248-256, (2010)
  • [7] Zhou L., An W.-G., An H., Non-probabilistic reliability analysis of supercavitating vehicles based on structure strength and buckling, Journal of Harbin Engineering University, 30, 4, pp. 362-367, (2009)
  • [8] Ahn S.S., Ruzzene M., Optimal design of cylindrical shells for enhanced buckling stability: Application to supercavitating underwater vehicles, Finite Elements in Analysis and Design, 42, 11, pp. 967-976, (2006)
  • [9] pp. 262-271, (1960)
  • [10] pp. 26-31, (1960)
12