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首页> 外文会议>International Structural Engineering and Construction Conference(ISEC-03); 20050920-23; Shunan(JP) >Local buckling behaviors of box cross section with stiffener
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Local buckling behaviors of box cross section with stiffener

机译：加劲肋箱形截面的局部屈曲行为

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摘要

An analytical procedure to estimate both the local buckling strength and local buckling mode shapes of box cross section with stiffener is presented using the transfer matrix method. The transfer matrix is derived from the differential equations for the plate panels by a numerical integration, and the extended transfer matrix is applied to consider the compatibility and equilibrium conditions between the panels of box cross section with stiffener can be gauged exactly. The accuracy and efficiencies of this method are investigated, and the local buckling strength and buckling mode shapes of box cross section with stiffener are presented. Exact buckling strength and buckling mode shapes of box cross section with stiffener are obtained with very small computational efforts, when compared with the finite element method and finite strip methods. The local buckling shapes obtained by the method are very effective to clarify the complicated phenomenona of box cross section with stiffener. Although the transfer matrix method is naturally a solution procedure for one-dimensional problems, this method is applied to two-dimensional problems by introducing the Fourier series expansions into the governing equations of the plate problem. This method are applied to buckling problems of the cylindrical shells and thin-walled structures.
机译：利用传递矩阵法，提出了一种估计带有加劲肋的箱形截面局部屈曲强度和局部屈曲模态形状的分析程序。通过数值积分从板的微分方程中导出传递矩阵，并采用扩展的传递矩阵来考虑相容性，并且可以精确地确定带有加劲肋的箱形截面板之间的平衡条件。研究了该方法的准确性和效率，并给出了加劲肋箱形截面的局部屈曲强度和屈曲模式形状。与有限元法和有限条形法相比，用加劲肋获得的箱形截面的精确屈曲强度和屈曲模态形状的计算量很小。通过该方法获得的局部屈曲形状非常有效地阐明了加劲肋箱形截面的复杂现象。尽管传递矩阵法自然是一维问题的求解过程，但通过将傅立叶级数展开式引入板问题的控制方程中，该方法可应用于二维问题。该方法适用于圆柱壳和薄壁结构的屈曲问题。

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