| 剪力滞后效应对固支及悬臂箱梁自振特性影响的研究 |
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| 引用本文： | 甘亚南,李庆华.剪力滞后效应对固支及悬臂箱梁自振特性影响的研究[J].焦作工学院学报,2004,23(1):55-58. |
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| 作者姓名： | 甘亚南 李庆华 |
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| 作者单位： | [1]焦作工学院,河南焦作454000 [2]海拉尔铁路分局满洲里工务段,内蒙古满洲里021400 |
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| 摘 要： | 应用能量变分原理,考虑箱梁剪力滞后效应的影响,推导出了箱梁的弯曲振动方程及自然边界条件,据此得出固支及悬臂箱梁的固有频率方程.作为算例,应用MATLAB软件对一固支及悬臂箱梁的固有频率方程进行求解,并根据算例得出的数值结果,对由于剪力滞后效应对箱形梁结构自振特性的影响进行了讨论,得出一些有价值的结论.
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| 关 键 词： | 剪力滞后效应 固支、悬臂箱梁 自振特性 |
Influence of shear lag on the characteristics of free vibration to box girder under fixed support and cantilever |
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| GAN Ya-nan,LI Qing-hua.Influence of shear lag on the characteristics of free vibration to box girder under fixed support and cantilever[J].Journal of Jiaozuo Institute of Technology(Natural Science),2004,23(1):55-58. |
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| Authors: | GAN Ya-nan LI Qing-hua |
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| Affiliation: | GAN Ya-nan~1,LI Qing-hua~2 |
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| Abstract: | Using energy-variational principle, this paper presents the governing differential equations and related natural boundary conditions of bending vibration to box girder with consideration of shear lag effect. Due to the complexity in calculation, the MATLAB software was used to solve the equation of vibration frequency. The influence of shear lag on the characteristics of free vibration of a fixed support and cantilever box girder was discussed and some meaningful conclusions were drawed. |
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| Keywords: | shear lag effect box beam characteristics of free vibration |
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