基于Donnell薄壳理论,采用准弹性方法,分析了含初始几何缺陷黏弹性层合圆柱壳极值点形式的延迟失稳特征.由轴向缩短量的突然增加定义失稳临界时间,对玻璃纤维/环氧树脂层合圆柱壳进行了数值计算.结果表明:圆柱壳存在临界时间趋于无穷的持久临界荷载;表征延迟失稳程度的瞬时弹性临界荷载与持久临界荷载之差值随着初始几何缺陷的增加而减小;边界条件、铺设方式对延迟失稳的影响机制可通过对应弹性层合圆柱壳的缺陷敏感性分析来考察.
参考文献
| [1] | Khot N S.Buckling and postbuckling behavior of composite cylindrical shells under axial compression[J].AIAA Journal,1970,8(2):229-235. |
| [2] | 周承倜.复合材料圆柱壳理论的进展[C]//罗祖道,王震鸣.复合材料力学进展.北京:北京大学出版社,1992:261-295.Zhou Chengti.Advance in research of stability for composite circular cylindrical shells[C]// Luo Zudao,Wang Zhenming,ed.Advance of Composite Mechanics.Beijing:Peking University Press,1992:261-295. |
| [3] | Sheinmen I,Shaw D,Simitses G J.Nonlinear analysis of axially-loaded laminated cylindrical shells[J].Computers &Structures,1983,36(1/4):131-137. |
| [4] | Sheinmen I,Goldfeld Y.Imperfection sensitivity of laminated cylindrical shells according to different shell theories[J].Journal of Engineering Mechanics,2003,129(8):1048-1063. |
| [5] | Goldfeld Y.The influence of the stiffness coefficients on the imperfection sensitivity of laminated cylindrical shells[J].Composite Structure,2004,64(2):243-247. |
| [6] | 束永平,张建武,吴金松.反对称正交铺层剪切圆柱壳在外压下的屈曲与后屈曲[J].复合材料学报,1999,16(4):121-129.Shu Yongping,Zhang Jianwu,Wu Jinsong.Buckling and postbuckling of antisymmetrically laminated cross-ply sheardeformable cylindrical shells under external pressure[J].Acta Materiae Compositae Sinica,1999,16(4):121-129. |
| [7] | 沈惠申.板壳后屈曲行为[M].上海:上海科学技术出版社,2002:302-382.Shen Huisheng.Postbuckling behavior of plates and shells[M].Shanghai:Shanghai Science and Technology Publishing House,2002:302-382. |
| [8] | Shen H S.Hygrothermal effects on the post-buckling of composite laminated cylindrical shells[J].Composite Science and Technology,2000,60(8):1227-1240. |
| [9] | 万志敏,杜星文,谢志明.玻璃/环氧圆柱壳的冲击响应与稳定性分析[J].复合材料学报,2001,18(4):82-86.Wan Zhimin,Du Xingwen,Xie Zhiming.Impact response and stability analysis of glass-epoxy cylindrical shells[J].Acta Materiae Compositae Sinica,2001,18(4):82-86. |
| [10] | 李道奎,周建平.含环向贯穿脱层的轴压圆柱层壳屈曲分析Ⅰ:基本方程与定解条件[J].复合材料学报,2002,19(1):74-79.Li Daokui,Zhou Jianping.Buckling of cylindrical shells with circumferential delamination Ⅰ:Basic equations and solutiondetermining conditions[J].Acta Materiae Compositae Sinica,2002,19(1):74-79. |
| [11] | Chang J S,Cheng C H.Viscoelastic buckling of cross ply laminated cylindrical circular shells based on a high order displacement field[J].Chinese Journal of Mechanics,1991,7(2):99-107. |
| [12] | 彭凡,傅衣铭.黏弹性圆柱壳在轴向恒压下的动力稳定性[J].工程力学学报,2002,19(6):49-53.Peng Fan,Fu Yiming.Dynamic stability of viscoelastic cylindrical shells under constant axial compression[J].Engineering Mechanics,2002,19(6):49-53. |
| [13] | Huang N N.Viscoelastic buckling and postbuckling of circular cylindrical laminated shells in hygrothermal environment[J].Journal of Marine Science and Technology,1994,2(1):9-16. |
| [14] | 彭凡,向红,傅衣铭.黏弹性层合圆柱壳的蠕变分岔屈曲[J].力学学报,2006,38(6):792-798.Peng Fan,Xiang Hong,Fu Yiming.Bifurcation creep buckling of circular cylindrical shells[J].Chinese Journal of Theoretical and Applied Mechanics,2006,38(6):792-798. |
| [15] | Huang N N.Creep deflection of viscoelastic laminated cylindrical panels with initial deflection under axial compression[J].Composites Part B,1999,30(2):145-156. |
| [16] | Cederbaum G,Touati D.Postbuckling analysis of imperfect non-linear viscoelastic cylindrical panels[J].International Journal of Non-Linear Mechanics,2002,37(4/5):757-762. |
| [17] | Lou Y C,Schapery R A.Viscoelastic characterization of a nonlinear fiber-reinforced plastic[J].Journal of Composite Materials,1971,5(2):208-213. |
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