| 加筋板的非线性相关屈曲研究 |
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| 引用本文： | 郭彦林,梅占馨.加筋板的非线性相关屈曲研究[J].应用力学学报,1992(2). |
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| 作者姓名： | 郭彦林 梅占馨 |
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| 作者单位： | 西北工业大学建工系
(郭彦林)，西安冶金建筑学院(梅占馨) |
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| 摘 要： | 本文将线性样条有限条理论推广到大挠度弹塑性范围,建立了样条有限条非线性分析方法,成功地分析了纵向加筋板结构局部与整体稳定相关作用对其极限承载能力的影响.采用弧长法和Newton-Raphson迭代求解非线性刚度方程,可获得包括峰值点在内的一条完整的荷载—挠度曲线.分析中考虑了加筋板结构的初曲和残余应力的影响,使得计算结果更具实用价值.
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| 关 键 词： | 相关屈曲 大挠度 弹塑性 样条有限条 |
Interaction Buckling Behaviour of Imperfect Longitudinally Stiffened Panels under Axial Load |
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| Guo Yanlin.Interaction Buckling Behaviour of Imperfect Longitudinally Stiffened Panels under Axial Load[J].Chinese Journal of Applied Mechanics,1992(2). |
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| Authors: | Guo Yanlin |
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| Institution: | Guo Yanlin(Northwestern Polytechnical University) Mei Zhanxin(Xi'an Institute of Metallurgy and Construction Engineering) |
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| Abstract: | This paper presents the interaction buckling analysis of imperfect longitudinally stiffened panels under axial load. A large-deflection elastic-plastic spline finite strip analysis is first developed to analyse such interaction which incorporates an obvious in-plane lateral displacements of the stiffeners. The initial geometric imperfections and residual stresses due to welding are included in the analysis. An iterative numerical procedure combining the arc-length method and Newton-Raphson iteration is employed for the solution of the nonlinear incremental equilibrium equation. The method has been applied successfully to predict the full-range load-deflection behaviour. The numerical analytic results show that the present spline finite strip method significantly reduces the computation induced due to the material and geometric nonlinearities and has a good accuracy. |
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| Keywords: | interaction buckling large-deflection elastic-plastic spline finite strip method |
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