摘要
对连续移动集中力作用下梁的有阻尼振动进行了分析,考虑了转动惯量和剪切变形对振动的影响,基于有限差分法给出了振动方程的数值解法,所给出的数值解适用于梁的不同边界条件,利用该数值解法具体求解了一个简单边界条件问题,并以此算例分别讨论了载荷移动速度和载荷间距的变化对梁振动的影响。
It analyzes the vibration of a damped beam with various boundary conditions subjected to point loads moving at constant speeds. Equations of motion are formulated in respect to effects of shear deformation and rotary inertia of the beam. Using a finite difference - based algorithm, it can solve the equations of motion. The results show the influence of speed and interval of loads.
关键词
梁
振动
移动载荷
数值解
Beam
Vibration
Moving Loads
Numerical Solution
