Method of designing high-power energy-gathered reflex housing

An energy-concentrating reflector and a design method technology, which are applied in computing, special data processing applications, instruments, etc., can solve the problem that the energy-concentrating reflector cannot obtain the best reflection efficiency, the installation error and transient dynamic response are not considered, and there is no Considering the nonlinear effects of acoustic pulses and other issues, the effects of improving structural stress safety margin and energy gathering effect, improving design efficiency, and facilitating installation and formation are achieved.

Active Publication Date: 2013-06-19
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

However, all these methods only qualitatively give the concept and structure of the energy-gathering reflector, and cannot directly obtain the specific design method of the energy-gathering reflector
However, the analysis of the energy-concentrating sound field of the energy-concentrating reflector is limited to ideal conditions, without considering its installation error and transient dynamic response, and most of them are limited to the medical field with small discharge energy, without considering the high-power conditions. The non-linear effect of the acoustic pulse, not to mention the cost-benefit ratio of the design and development of the energy-concentrating reflector
"Acoustic Technology" (Volume 29, Issue 1, Page 107) in the article "Optimization Design and Experimental Research of ANSYS-assisted Wedge-shaped Ultrasonic Pulse Wave Concentrator" uses finite element analysis method, starting from the shape and size of the energy concentrator, the It performs modal analysis, harmonic response analysis, and coupling field analysis, but it does not consider the nonlinear effect under high power conditions, and cannot make the energy-concentrating reflector obtain the best reflection efficiency under high power conditions

Method used

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  • Method of designing high-power energy-gathered reflex housing
  • Method of designing high-power energy-gathered reflex housing
  • Method of designing high-power energy-gathered reflex housing

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Experimental program
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Embodiment 1

[0042] The structure of the ellipsoid energy-gathering reflector to be designed in this embodiment is as follows: figure 1 As shown, its surface equation can be expressed as: . In the figure, c is the half focal length of the reflector, c is 0.15~15m, w is the aperture of the reflector, w is 0.1~1m, h is the depth of the reflector, by installing the discharge electrode at the first focal point F1, it can Converge the energy reflection to the second focal point F2. The position of the second focal point F2 is set according to application requirements.

[0043] The acquisition of the processing data of the energy-concentrating reflector mainly includes three processes, and its flow chart is as follows: figure 2 shown.

[0044] Step 1: Generate ideal surface type value table

[0045] According to the requirements of the best cost-effective ratio, the gain function method is used to calculate the relationship between the energy-gathering gain and the depth h of the reflecto...

Embodiment 2

[0061] The structure of the energy-gathering reflector in this embodiment is as follows: Figure 7 As shown, its surface equation can be expressed as: . By placing the discharge electrode at the focus F of the parabola, the beamforming can be reflected to generate parallel waves. For example, for a parabolic reflector with a diameter of w'=1m and a concave depth of h'=0.5m, placing the discharge electrode at F=0.25m can form an acoustic pulse impact beam with a diameter of 1m. Also adopt the design method adopted in embodiment 1 to obtain the ideal surface type value table, the revised surface type value table and the processed surface type value table, finally according to Figure 6 The specific implementation process is processed to obtain the parabolic energy-concentrating reflector with the best cost-effectiveness ratio and the best reflection efficiency characteristics.

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Abstract

The invention provides a method of designing a high-power energy-gathered reflex housing. The method includes the steps of designing an appearance structure of the energy-gathered reflex housing according to principle of the optimum cost-benefit ratio, generating an ideal curved surface type value table; conducting dynamics and nonlinear acoustics analysis on the energy-gathered reflex housing, optimizing the reflex housing structure, obtaining a revised curved surface type value table and generating curved surface machining data. Due to the fact that dynamics analysis and nonlinearity factors are overall considered, the molded surface of the energy-gathered reflex housing is optimally designed in a system integrated mode, design efficiency of the energy-gathered reflex housing is greatly improved, optimum energy-gathered directed radiation performance is obtained. Due to the fact that the energy-gathered reflex housing is designed according to the principle of the optimum cost-benefit ratio, the volume, the weight and manufacturing cost of the energy-gathered reflex housing are reduced, installation and arraying of a carrying platform are convenient, and energy-gathered comprehensive effect of the energy-gathered reflex housing reaches the optimum reflex effect of the ideal molded surface under the condition of rated load due to the fact that nonlinear effect is considered and the molded surface of the energy-gathered reflex housing is revised.

Description

technical field [0001] The invention relates to a method for designing an energy-gathering reflector with high power and high repetition frequency, especially a method for optimizing the design of an energy-gathering reflector using the principles of dynamics and nonlinear acoustics, which can obtain the best cost-benefit ratio High-power energy-concentrating reflector with the best reflection efficiency characteristics. Background technique [0002] The strong sound source of underwater plasma has obvious advantages, such as large instantaneous sound power emission, narrow emission pulse, high peak energy, and high electro-acoustic conversion efficiency. Highly directional sound pulse waves can be formed by reflection beamforming technology to improve the sound quality in a specified direction. The intensity of the acoustic pulse on . In addition, the underwater plasma strong sound source has the characteristics of adjustable pulse waveform parameters and wide frequency co...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 黄建国傅增祥张群飞雷开卓史文涛腾舵刘小龙李宁蒲丽娜
Owner NORTHWESTERN POLYTECHNICAL UNIV
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