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力学与实践 ›› 2009, Vol. 31 ›› Issue (3): 44-47.doi: 10.6052/1000-0879-2008-251

• 应用研究 • 上一篇    下一篇

轴向冲击下圆柱壳非轴对称屈曲耗散能分析

郭胜鹏 顾红军   

  1. 徐州空军学院
  • 收稿日期:2008-05-05 修回日期:2008-07-01 出版日期:2009-06-08 发布日期:2009-06-08

ENERGY ANALYSIS OF NON-AXISYMMETRIC BUCKLING OF A CYLINDRICAL SHELL UNDER AXIAL IMPACT

  • Received:2008-05-05 Revised:2008-07-01 Online:2009-06-08 Published:2009-06-08

摘要: 主要研究受轴向冲击圆柱壳非对称屈曲耗能,从轴向屈曲变形、环向屈曲变形和轴向压 缩变形3个角度进行理论推导. 结果表明: 环向屈曲变形能随屈曲折叠边数增加有减小 趋势, 且占总耗能比例很小,可知圆柱壳受轴向冲击屈曲过程中外力做功主要转变为轴向变形 能,环向屈曲变形消耗外力功很少.

关键词: 圆柱壳;屈曲能耗;非对称屈曲

Abstract: Cylindrical shells are commonly used components in engineering. The buckling of cylindrical shells under impact load is an important research topic. This paper studies the energy loss in the non-axisymmetric buckling of a cylindrical shell in three aspects: axial buckling, circumferential buckling and axial-compressive deformation. The results indicate that the circumferential deformation energy tends to decrease with the increase of the number of edges, and takes only a small proportion of the total deformation energy. It is concluded that during the process of the axial buckling, most of work done by the external force is converted into the axial deformation energy, only a small part is converted into the circumferential deformation energy.

Key words: cylindrical shell, energy consumption of buckling, non-axisymmetric buckling