Method for calculating acoustic radiation characteristics of overflow ring transducer array
A technology of transducer array and radiation characteristics, applied in the field of transducer array, can solve the problems of waste of manpower and financial resources, large manpower, material resources, financial resources, performance prediction, etc.
Active Publication Date: 2014-08-27
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology
This method of experimental measurement requires a lot of manpower, material resources, and financial resources. At the same time, the measurement is affected by the underwater acoustic environment, human operation errors, and experimental system errors.
Moreover, the experimental measurement method cannot predict its performance in the design stage of the array, and can only measure its performance after it is manufactured. If the performance is not good, it needs to be redesigned and manufactured, which wastes a lot of manpower and financial resources.
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[0065] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0066] Taking the three-element overflow ring transducer array as an example, the acoustic radiation characteristics of the transducer array are calculated using the method proposed by the present invention. The technical scheme flow chart of the present invention is as figure 1 As shown, the specific implementation steps are as follows:
[0067] (1) Establish the finite element model of the overflow ring transducer array
[0068] figure 2 Shown is the three-dimensional structural diagram of the ternary overflow ring transducer array. Since the structure of the overflow ring transducer and the base array is symmetrical up and down and axisymmetric, we establish the upper half of the transducer array. Axisymmetric finite element model. The inner radius of the overflow ring is a 1 =0.1m, the wall thickness is t=0.01m, the outer radius is a=0.11m, th...
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The invention discloses a method for calculating the acoustic radiation characteristics of an overflow ring transducer array. The method includes the following steps: (1) building a finite element model of the overflow ring transducer array, (2) dividing the finite element model to form finite element grids, (3) carrying out finite element calculation solving, (4) building a boundary element model of the overflow ring transducer array, and (5) calculating the acoustic radiation characteristics with the boundary element method in cooperation with the finite element calculation result. By means of the method for calculating the acoustic radiation characteristics of the overflow ring transducer array, the acoustic radiation characteristics of the overflow ring transducer array are calculated with the finite element method in cooperation with the boundary element method, the performance of the overflow ring transducer array is forecasted in the design stage of the overflow ring transducer array, optimized design of the transducer array is accordingly guided, the transmitting transducer array with the excellent performance is obtained, calculation is accurate, and a large amount of manpower, a large number of material resources and a large number of financial resources are saved.
Description
technical field [0001] The invention relates to the technical field of transducer arrays, in particular to a method for calculating the array sound radiation characteristics of overflow ring transducers. Background technique [0002] The overflow ring transducer, referred to as the overflow ring transducer, is a horizontal non-directional transducer, which uses the coupling of its liquid cavity vibration and radial vibration to make the transducer have a low resonance frequency , wide frequency band and high efficiency, small size, light weight, high power, excellent deep water performance and good directivity. Its structure is simple and compact, its work is stable and reliable, and it has been widely used in the field of underwater acoustics. In order to improve the emission sound source level and emission directivity of underwater sound sources, multiple overflow ring transducers can be arrayed to emit. Therefore, we need to study the emission performance of the overflo...
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IPC IPC(8): G06F17/50
Inventor 何正耀马远良杨坤德雷波韩一娜
Owner NORTHWESTERN POLYTECHNICAL UNIV