矩形截面指数杆超声弯曲振动实验研究

Experimental Study of the Ultrasonic F|exura| Vibrations of Exponential Bars with Rectangular Cross Section

针对等厚度矩形截面指数杆的超声弯曲振动,测试了两端自由杆弯曲振动的频率及其位移振幅节点位置。结果与理论计算吻合较好。

The frequencies and displacement node positions are measured under the boundaries of free-free ends for the ultrasonic flexural vibrations of exponential bars with constant thickness and rectangular cross section. The comparison of experimental results with theories testifies the correctness of Timoshenko's theory Finally, the measurements and the analysis are made of the harmonic frequencies of wedge bars and of the corresponding exponential bars in flexural vibrations.