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把J.Thomas等提出的常截面Timoshenko梁的单元矩阵扩展应用于变截面的Timoshenko梁。从计算结果和按简单梁处理的比较中可以看出:梁的粗端的剪切变形和转动惯性对系统的固有频率有较大影响。
The extension of the element matrix of the constant-section Timoshenko beam proposed by J. Thomas et al. Is applied to a Timoshenko beam of variable section. From the comparison between the calculation results and the simple beam treatment, it can be seen that the shear deformation and the rotational inertia of the rough end of the beam have a great influence on the natural frequency of the system.