双层柱面网格扁壳的非线性稳定性分析

NONLINEAR BUCKLING OF CYLINDRICAL DOUBLE-DECK RETICULATED SHALLOW SHELLS

  • 摘要: 基于等效夹层壳思想的双层网格扁壳非线性弯曲理论,对双层柱面网格壳体在均布压力作用下的非线性稳定性问题进行研究,采用伽辽金方法求得了简支边界条件下双层柱面网格扁壳的非线性载荷-位移关系式和临界屈曲载荷的解析表达式,讨论网壳结构几何参数对临界屈曲载荷的影响.

     

    Abstract: Based on the nonlinear bending theory of double-deck reticulated shallow shells, the nonlinear buckling problem of cylindrical double-deck reticulated shallow shells under uniform transverse pressure is studied. An analytic solution for the shell with simply supported edges is obtained by use of Galerkin抯 method. The results of numerical calculations are presented in diagrams, showing the influence of geometrical parameters on the buckling behavior of cylindrical double-deck reticulated shallow shells.

     

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