【摘要】 通过模态分析和实验测量,依据瑞利近似理论研究了横向振动对两端自由的金属杆中纵波固有频率的影响,重点研究了直径对固有频率的影响.结果表明,横向振动使得振动系统的惯性增加,从而导致了固有频率的降低.理论和实验结果都表明,同样长度的杆,截面增大时固有频率降低.更多还原

【Abstract】 The effect of transverse vibration on longitudinal vibrating natural frequency of metallic rods in a state of freedom,especially the effect of diameter on it,is studied by mode analysis and experimental measurement.The results show that the inertia of the vibrating system decreases with transverse vibration,thus the natural frequency reduces with the dimension of the section increase while the length of the rods is the same.更多还原