Study on the distributions of axial radiation pressure for stepped circular plates
LI Jiaxing, HE Xiping*, LIU Doudou
（School of Physics and Information Technology, Shaanxi Key Laboratory of Ultrasonic Shaanxi Normal University, Xi′an 710119, Shaanxi, China）
Abstract:
The axial radiated sound pressure of stepped circular plates are investigated from both of theoretical calculations and experimental test. Taking a circular plate with two steps for example, the distribution of axial radiated sound pressure is derived using of superposition and Gaussian numerical integral method, and the variation of the axial sound pressure and distance are also calculated.The axial radiated sound pressure for the fabricated circular plates with two steps, three steps and four steps are tested in experimental and the results are according with theoretical calculations. Moreover, the relationship between the radiated sound pressure of input electric power and the number of steps of a circular plate are confirmed in experiment. It shows that the axial pressure increases with the input electric power.Furthermore when the input electric power is fixed, the axial pressure increases with the number of steps.
KeyWords:
axial radiated sound pressure; circular stepped plate; input power
