Effects of driving frequency of longitudinal transducer on the vibration characteristics of a stepped plate |
| |
| Affiliation: | 1. State Key Laboratory for Mechanical Structure Strength and Vibration, School of Aerospace, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China;2. Institute of Applied Acoustics, Shaanxi Normal University, Xi’an, Shaanxi 710062, China;1. IbiTech-bioMMeda, Department of Electronics and Information Systems, Ghent University, Ghent, Belgium;2. Institute of Bioengineering, Ecole Polytechnique Federale de Lausanne, Lausanne, Switzerland;1. University of Campinas, School of Technology, R. Paschoal Marmo, 1888, Jd. Nova Itália, Limeira-SP, Brazil;2. Centro Estadual de Educação Tecnológica Paula Souza, Faculdade de Tecnologia, R. Emílio de Menezes, V. Amorim, Americana-SP, Brazil;1. Faculty of Mechanical Engineering and Ship Technology, Gdańsk University of Technology, 80-233 Gdańsk, Poland;2. Department of Physics, Goethe University Frankfurt, 60438 Frankfurt, Germany |
| |
| Abstract: | The flexural vibration characteristics of a stepped plate, driven at its center by different frequency of longitudinal transducer with a certain area are investigated. The variation in the nodal circle, fundamental frequency and displacement distribution of the stepped plate are calculated by using finite element method (FEM) under different driving frequencies. The results show that the fundamental frequency and nodal circle of the flexural-vibration stepped plate (FVSP) increase with an increase in the driving frequency of the longitudinal vibration ultrasonic transducer (LVUT), before the second-order flexural vibration occurs. When the driving frequency is f = 28 kHz, the displacement amplitude of the stepped plate can achieve the maximum, and the nodal circle radius of the stepped plate is 2.61 cm which fits evenly the edge of stepped profile. Meanwhile, the directivity and radiation efficiency of the FVSP would be greatly improved in a special driving frequency. The conclusions agree with the experimental ones and are significant for both design and applications of the stepped plate. |
| |
| Keywords: | Stepped plate Driving frequency Fundamental frequency Nodal circle |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
