The effect of the excitation area on the vibration characteristics of flexure vibrating rectangular plate
YAO Jing, HE Xiping*
(College of Physics and Information Technology,Shaanxi Normal University, Shaanxi Key Laboratory of Ultrasonics,Xi′an 710062, Shaanxi, China)
Abstract:
The stripe vibration mode at 15 kHz and 20 kHz of rectangular plate are obtained by using of finite elements method, then the effect of excitation area (transducer) on the nodal line of the stripe vibration mode of rectangular plate is investigated. It shows that the vibration characteristics of the stripe vibration mode of rectangular plate were hardly affected by the vibration of the transducer with samll excitation area,the nodal line of stripe vibration mode obviously deformed irregularly with increase of the excitation radius to 8.0 mm, The experiment results by the aid of scanning laser vibrometer agree well with those of theoretical calculations.
KeyWords:
rectangular plate; stripe vibration mode; excitation area; nodal line
