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本文研究了与弹性梁有两点接触的运动刚体对梁激励时的响应，以悬臂梁为例进行了数值计算及实验研究．发现运动质量在梁上运动时，梁呈非周期振动；而且，最先产生响应的位置大约在梁的中部，而不是在质量作用点或梁端部．实验验证了计算结果．
In this paper, we study the response of a rigid body with two points of contact with the elastic beam when the beam is excited, and take the cantilever beam as an example to conduct the numerical calculation and experimental research. The beam was found to be non-periodic vibrations when mass of motion was found to be moving on the beam; moreover, the location at which the response first occurred was about the middle of the beam, not at the point of mass effect or the end of the beam. Experimental results verify the results.