移动刚体激励的梁的振动分析和实验

目的 研究移动刚体激励下弹性梁的振动响应特点。方法 对移动刚体激励下弹性梁振动响应进行理论分析；对以一端简支另一端自由，中间有铰链支撑的弹性梁为例进行仿真计算和实验测试，得到弹性梁在移动刚体激励下的振动响应，进而研究移动刚体激励下弹性梁振动响应的特点。结果 仿真计算了移动刚体在不同情况下弹性梁振动的位移响应曲线和加速度响应曲线，实验测量了移动刚体在不同情况下弹性梁端部的位移响应和速度响应。结论 移

Experiment Research and Vibration Analysis of Beams Activated by Moving Rigid Body

Aim To study the characteristics of the response of flexible beams activated by the moving rigid body. Methods Theoretic analysis of the response of flexible beams activated by the moving rigid body was given and numerical solutions and experiment results were obtained in the case of a beam with one end simply supported, the other end free and the middle supported by the joint. Results The displacement response and the acceleration response were simulated, the displacement response and the acceleration response of the beam terminal were tested in different moving cases of the moving rigid body. Conclusion The vibration response of the beam is non periodic and the relationship between the velocity of moving rigid body and the response of the beam is obtained.