摘要
利用最小势能原理建立双肋主梁在轴向荷载作用下考虑剪力滞效应控制微分方程,在获得方程齐次解后,导出可广泛应用的单元刚度矩阵.算例表明,该方法计算精度较高,方便实际应用,具有很高的工程使用价值.
The governing differential equations for double ribbed main beam considering shear lag under axial loading is established by using the principle of the minimum potential energy. The finite element matrixes are derived after the homogeneous solutions of equations are obtained. The numerical calculation results are compared with those from the model test, which shows the convenience and accuracy of the method given in this paper.
出处
《力学与实践》
CSCD
北大核心
2005年第5期50-52,共3页
Mechanics in Engineering
关键词
双肋主梁
剪力滞
最小势能原理
有限段法
double ribbed main beam, shear lag, principle of minimum potential energy, finite segment method
