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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．结论移动刚体激励下弹性梁的振动呈非周期振动，得到了移动刚体的运动与弹性梁振动响应之间的关系．
Aim To study the vibration response characteristics of elastic beams under moving rigid body. Methods The vibration response of the elastic beam under rigid body motions is analyzed theoretically. The elastic beam with free ends and hinge hinges at one end is taken as an example to simulate and test the vibration responses of the elastic beams under the rigid body motions , And then study the characteristics of the vibration response of elastic beam under moving rigid body excitation. Results The displacement response curve and acceleration response curve of elastic rigid beam under different conditions were calculated by simulation. The displacement and velocity responses of the elastic rigid beam under different conditions were measured experimentally. CONCLUSION The vibration of the elastic beam under a moving rigid body is non-periodic vibration, and the relationship between the motion of the moving rigid body and the vibration response of the elastic beam is obtained.