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本文分析了当框架上下梁带集中质量时的线性平面微振动,综合考虑了横向与纵向振动两个方面;又以拐角的位移连续和力平衡条件,推得了整体框架在弹簧支承下的频率方程的解析式,还导出了整体框架的动力响应的解析式,並应用电算计算,其结果与实测亦能很好吻合。同时文中还讨论了剪切变形与旋转惯量的效应,並给出了计算曲线图表,引出了本方程适用条件。
This paper analyzes the linear planar micro-vibration when the beams are concentrated on the top and bottom of the frame, taking into account both the transverse and longitudinal vibrations. By means of the displacement continuity and force balance of the corner, the frequency equation of the whole frame under the spring support The analytical expression of the dynamic response of the whole frame is also derived. The result of calculation is also in good agreement with the actual measurement. At the same time, the effect of shear deformation and rotational inertia is also discussed in this paper, and the calculation curve chart is given, which leads to the applicable conditions of this equation.