基于二阶双渐近法的双层圆柱壳在水下爆炸作用下的鞭状运动

刘云龙 汪玉 张阿漫

刘云龙, 汪玉, 张阿漫. 基于二阶双渐近法的双层圆柱壳在水下爆炸作用下的鞭状运动[J]. 爆炸与冲击, 2014, 34(6): 691-700. doi: 10.11883/1001-1455(2014)06-0691-10
引用本文: 刘云龙, 汪玉, 张阿漫. 基于二阶双渐近法的双层圆柱壳在水下爆炸作用下的鞭状运动[J]. 爆炸与冲击, 2014, 34(6): 691-700. doi: 10.11883/1001-1455(2014)06-0691-10
Liu Yun-long, Wang Yu, Zhang A-man. Whipping responses of double cylindrical shell structures to underwater explosion based on DAA2[J]. Explosion And Shock Waves, 2014, 34(6): 691-700. doi: 10.11883/1001-1455(2014)06-0691-10
Citation: Liu Yun-long, Wang Yu, Zhang A-man. Whipping responses of double cylindrical shell structures to underwater explosion based on DAA2[J]. Explosion And Shock Waves, 2014, 34(6): 691-700. doi: 10.11883/1001-1455(2014)06-0691-10

基于二阶双渐近法的双层圆柱壳在水下爆炸作用下的鞭状运动

doi: 10.11883/1001-1455(2014)06-0691-10
基金项目: 国家安全重大基础研究项目子专题(613157020102);教育部高等学校博士学科与专项科研基金项目(20122304110001)
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    作者简介:

    刘云龙(1988—), 男, 博士

  • 中图分类号: O381

Whipping responses of double cylindrical shell structures to underwater explosion based on DAA2

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  • 摘要: 针对潜艇在水下爆炸载荷下的鞭状运动,从波动方程出发,推导了二阶双渐近法后期近似,并结合声固耦合法初步解决了双层圆柱壳的内域问题,然后将其与显式有限元耦合形成了圆柱壳结构水下爆炸流固耦合分析方法。通过简单算例验证了本文分析方法的有效性和精度。最后,基于此方法分析了双层圆柱壳结构在水下爆炸载荷下的总体响应特性以及周期比和爆距比对其影响规律。
  • 图  1  DAA2法后期时域近似示意图

    Figure  1.  Scheme of later approximation in time domain of DAA2

    图  2  水下爆炸气泡脉动载荷计算示意图

    Figure  2.  Scheme of the calculation of underwater explosion bubble pulsation load

    图  3  ABAQUS用户子程序数据流示意图

    Figure  3.  Data flow in the user-subroutine of ABAQUS

    图  4  不同时刻内流场声压云图

    Figure  4.  Acoustic pressure of the inner field at different times

    图  5  数值模型对比验证

    Figure  5.  Comparison among different methods

    图  6  双层圆柱壳总体响应计算示意图

    Figure  6.  Configuration of the total response simulation of double cylindrical structure

    图  7  双层圆柱壳计算模型

    Figure  7.  Calculation models for double cylindrical shell structures

    图  8  工况1鞭状运动应力云图

    Figure  8.  Mises stress contours of the whipping response in case 1

    图  9  工况1鞭状运动幅值和冲击载荷曲线

    Figure  9.  Curves of whipping response to shock pressure in case 1

    图  10  工况2鞭状运动幅值和冲击载荷曲线

    Figure  10.  Curves of whipping response to shock pressure in case 2

    图  11  工况5鞭状运动幅值和冲击载荷曲线

    Figure  11.  Curves of whipping response to shock pressure in case 5

    图  12  不同工况下,鞭状运动时历曲线

    Figure  12.  Whipping response curves in different cases

    图  13  鞭状运动最大幅值随周期比的变化

    Figure  13.  The maximum amplitude of the whipping response varied with period ratio

    图  14  爆距对鞭状运动幅值的影响

    Figure  14.  Effect of explosion distance on the amplitude of the whipping response

    图  15  鞭状运动最大幅值随爆距比的变化

    Figure  15.  The maximum amplitude of the whipping response varied with explosion distance ratio

    表  1  柱壳总体响应工况设置

    Table  1.   Case parameters for total responses of cylindrical shell structures

    工况d/mTb/sγT
    1600.611.60
    2700.551.43
    3800.491.30
    4900.451.19
    51000.421.10
    61200.360.96
    71400.320.85
    81600.290.76
    下载: 导出CSV

    表  2  柱壳总体响应工况设置

    Table  2.   Case parameters for total response

    工况R/mγR
    1100.13
    2200.27
    3350.47
    4500.67
    5650.87
    下载: 导出CSV
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出版历程
  • 收稿日期:  2013-04-01
  • 修回日期:  2013-04-18
  • 刊出日期:  2014-11-25

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