| 基于UL法的曲线箱梁剪力滞的几何非线性方程 |
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| 引用本文： | 张伊青,罗旗帜.基于UL法的曲线箱梁剪力滞的几何非线性方程[J].佛山科学技术学院学报(自然科学版),2007,25(6):1-6. |
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| 作者姓名： | 张伊青 罗旗帜 |
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| 作者单位： | 1. 佛山科学技术学院,土木工程与建筑系,广东,佛山,528000;广东工业大学,建设学院,广东,广州,510006
2. 佛山科学技术学院,土木工程与建筑系,广东,佛山,528000 |
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| 基金项目： | 国家自然科学基金资助项目(50378019)，广东省自然科学基金资助项目(034066) |
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| 摘 要： | 基于UL列式法导出了薄壁曲线箱梁考虑剪力滞的几何非线性方程。构造了薄壁曲线箱梁的剪力滞翘曲位移函数,给出了箱梁的位移参数和空间位移场。运用UL列式法建立了增量平衡方程,导出了弹塑性刚度矩阵和几何刚度矩阵。并对薄壁曲线箱梁剪力滞的几何非线性研究提供了一种新方法。
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| 关 键 词： | UL列式法 曲线箱梁 剪力滞 几何非线性 |
| 文章编号： | 1008-0171（2007）06-0001-06 |
| 收稿时间： | 2007-07-10 |
| 修稿时间： | 2007年7月10日 |
Geometrically nonlinear equation of curved box beam considering shear lag based on updated lagrangian formulation |
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| ZHANG Yi-qing,LUO Qi-zhi.Geometrically nonlinear equation of curved box beam considering shear lag based on updated lagrangian formulation[J].Journal of Foshan University(Natural Science Edition),2007,25(6):1-6. |
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| Authors: | ZHANG Yi-qing LUO Qi-zhi |
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| Abstract: | Geometrically nonlinear equation of thin-walled curved box beam considering shear lag based on an updated lagrangian formulation was deduced in this paper.The shear lag and warping distortion's displacement functions of thin-walled curved box beam are constructed,and the displacement parameters and space displacement field of box beam are given.By using the updated lagrangian formulation,we set up the incremental equilibrium equation,and the elastic-plastic stiffness matrix and geometric stiffness matrix are deduced.This paper offered a new method to the research on geometrically nonlinearity of thin-walled curved box beam considering shear lag. |
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| Keywords: | updated lagrangian formulation the curved box beam shear lag geometrical nonlinearity |
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