球形爆炸容器法兰联接螺栓的应变增长现象

程帅 张德志 刘文祥 殷文骏 师莹菊 陈博 唐仕英

程帅, 张德志, 刘文祥, 殷文骏, 师莹菊, 陈博, 唐仕英. 球形爆炸容器法兰联接螺栓的应变增长现象[J]. 爆炸与冲击, 2019, 39(3): 034102. doi: 10.11883/bzycj-2018-0058
引用本文: 程帅, 张德志, 刘文祥, 殷文骏, 师莹菊, 陈博, 唐仕英. 球形爆炸容器法兰联接螺栓的应变增长现象[J]. 爆炸与冲击, 2019, 39(3): 034102. doi: 10.11883/bzycj-2018-0058
CHENG Shuai, ZHANG Dezhi, LIU Wenxiang, YIN Wenjun, SHI Yingju, CHEN Bo, TANG Shiying. Strain growth of flange bolts of the spherical explosive vessel[J]. Explosion And Shock Waves, 2019, 39(3): 034102. doi: 10.11883/bzycj-2018-0058
Citation: CHENG Shuai, ZHANG Dezhi, LIU Wenxiang, YIN Wenjun, SHI Yingju, CHEN Bo, TANG Shiying. Strain growth of flange bolts of the spherical explosive vessel[J]. Explosion And Shock Waves, 2019, 39(3): 034102. doi: 10.11883/bzycj-2018-0058

球形爆炸容器法兰联接螺栓的应变增长现象

doi: 10.11883/bzycj-2018-0058
详细信息
    作者简介:

    程 帅(1988- ),男,博士研究生,工程师,chengshuai@nint.ac.cn

    通讯作者:

    张德志(1973- ),男,博士,研究员,zhangdezhi@nint.ac.cn

  • 中图分类号: O383.3

Strain growth of flange bolts of the spherical explosive vessel

  • 摘要: 本文在球形爆炸容器法兰连接螺栓的动态响应实验研究中,发现了法兰螺栓的应变增长现象。以实验数据为基础,通过数值模拟对螺栓发生应变增长的原因进行分析。研究结果表明:受到开口结构的影响,端盖螺栓受到的压力载荷强度较容器内壁大幅增强。螺栓的应变增长是被增强压力载荷的前2个周期与结构响应形成共振时引发的,通过改变端盖质量、预紧力大小可以避免螺栓发生应变增长。
  • 图  1  实验用球形容器

    Figure  1.  Spherical vessel used in experiment

    图  2  应变片位置示意图

    Figure  2.  Sketch of the strain gauge location

    图  3  螺栓应变历程曲线

    Figure  3.  Strain-time curves of bolts

    图  4  压力载荷计算模型

    Figure  4.  Simulation model for pressure loading

    图  5  法兰响应计算模型

    Figure  5.  Simulation model for response of flange

    图  6  容器球壳内壁压力载荷第1个脉冲

    Figure  6.  First impulse of pressure loading in the vessel

    图  7  球壳和端盖处的压力载荷

    Figure  7.  Pressure loading at spherical shell and closure

    图  8  螺栓平均应变实验数据与计算结果

    Figure  8.  Bolt average strain obtained by experiment and numerical simulation

    图  9  载荷第2个周期与螺栓响应关系

    Figure  9.  Bolt response with the second loading period

    图  10  载荷第2个周期到时与端盖螺栓响应关系

    Figure  10.  Response of closure and bolts with variation of arriving time of the second loading period

    图  11  雷管罩质量与螺栓响应关系

    Figure  11.  Bolt response with the variation of detonator cover mass

    图  12  螺栓预紧力与螺栓响应关系

    Figure  12.  Bolt response with the variation of preload

    表  1  螺栓应变统计

    Table  1.   Statics of bolt strain

    编号第1应变峰值/10−6第2应变峰值/10−6应变增长系数
    内侧中轴线内侧中轴线内侧中轴线
    1 7623731 3916911.831.85
    2 9003711 3576921.511.87
    31 0576101 1486151.091.01
    4 8693291 3676901.572.10
    平均 8974211 3166721.471.60
    下载: 导出CSV

    表  2  JWL状态方程参数

    Table  2.   Parameters in JWL Equation of State

    ρ0/(kg∙m−3)e0/(J∙kg−1)D/(m∙s−1)pCJ/GPaA/GPaB/GPaR1R2ω'
    1 6304.26×1066 93021371.23.2314.150.950.3
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-02-12
  • 修回日期:  2018-05-04
  • 网络出版日期:  2019-03-25
  • 刊出日期:  2019-03-01

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