对轴向冲击圆柱壳局部屈曲及整体失稳的数值模拟分析
Computer simulation on dynamical buckling and whole collapse of cylindrical shell under axial impact
-
摘要: 使用有限元程序LS-DYNA对不同加载情况圆柱壳的动力响应进行数值模拟,得到圆柱壳未发生局部屈曲点处的应变.数值模拟结果与实验符合较好.数值模拟所得到的未发生局部屈曲处应变表明:当壳发生局部屈曲时,整个壳的未屈曲部位处于塑性状态,随后壳会发生弹性卸载,并发生弹性振动,直至静止.Abstract: The computer simulation on dynamic buckling and whole collapse of cylindrical shell under different axial impact was carried out using LS-DYNA.The numerical results and the experimental results showed good agreement.The strains of the points which were located in the middle of the local buckling cylindrical shells were obtained.The strains showed that the local buckling cylindrical shells were in the plastic stage and generated elastic vibration subsequently until standstill.
-
Key words:
- cylindrical shell buckling /
- computer simulation /
- whole collapse /
- axial impact
-
-
[1]
Florence A L,Goodier J N.Dynamic plastic buckling of cylindrical shells in sustained axial compressive[J].ApplMech,1968,35(1):80.
-
[2]
Jones N.Structural Impact[M].Cambridge:Cambridge University Press,1989.
-
[3]
Wang R,Han M B,Huang Z P,et al.An experimental study on the dynamic axial plastic buckling of a cylindrical shell[J].Int J Impact Engng,1983(1):249.
-
[4]
Karagizova D.Inertia effects on some crashwothiness parameter for cylindrical shell under axial impact[J].Intemational Joumal of Crashworthiness,2001,6(4):561.
-
[5]
Karagizova D,Jones N.Influence of stress waves on the dynamic progressive and dynamic plastic buckling of cylindrical shells[J].International Journal of Solids and Structures,2001,37(38-39):6723.
-
[6]
施连会,王安稳.轴向压应力下圆柱壳弹性动力屈曲数值解法[J].华中科技大学学报:自然科学版,2009,37(10):105.
-
[7]
郑波,王安稳.轴向应力波作用下圆柱壳塑性轴对称动力屈曲[J].爆炸与冲击,2008,28(3):271.
-
[8]
崔艳,韩志军,路国运,等.刚性块轴向冲击圆柱壳动力屈曲的计算机模拟[J].科学技术与工程,2010,10(5):1105.
-
[9]
杨卫奇,张善元,路国运,等.圆柱壳轴向冲击屈曲数值仿真及其应力波效应分析[J].科学技术与工程,2008,8(23):6204.
-
[1]
-
点击查看大图
计量
- PDF下载量: 41
- 文章访问数: 691
- 引证文献数: 0
下载:
