Application of Linear Distribution Source Method on Acoustical Holography
碩士 === 國立成功大學 === 系統及船舶機電工程學系碩博士班 === 95 === In the present study, an innovation to find out the location of the noise in a system is explored. By using the Finite Element Method and Gauss Legendre Quadrature over a triangle, an innovation which is linear distribution source method has been develope...
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ndltd-TW-095NCKU53450152015-10-13T14:16:10Z http://ndltd.ncl.edu.tw/handle/86286883590117088982 Application of Linear Distribution Source Method on Acoustical Holography 線性分佈聲源法應用於聲音全像之研究 Kian-Leong Yong 楊健量 碩士 國立成功大學 系統及船舶機電工程學系碩博士班 95 In the present study, an innovation to find out the location of the noise in a system is explored. By using the Finite Element Method and Gauss Legendre Quadrature over a triangle, an innovation which is linear distribution source method has been developed. This innovation, coordinated with the technology of the measurement of acoustical holography, is able to draw up the sound pressure contour distribution maps of overall frequency and each dominant noise frequency. Also the main position of noise produced in the system can be determined. In addition, this research had proven the linear distribution source method may overcome the error of predicting sound pressure within a prediction distance of the plane version of similar source method. Besides, it can reduce the effect of measuring error and improve the accuracy of the analysis. Furthermore, comparison of error analysis between the similar source method and the linear distribution source method has also been made for three different sources and conditions. It has confirmed the feasibility of linear distribution source method. Gee-Pinn Too 涂季平 2007 學位論文 ; thesis 86 zh-TW |
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碩士 === 國立成功大學 === 系統及船舶機電工程學系碩博士班 === 95 === In the present study, an innovation to find out the location of the noise in a system is explored. By using the Finite Element Method and Gauss Legendre Quadrature over a triangle, an innovation which is linear distribution source method has been developed. This innovation, coordinated with the technology of the measurement of acoustical holography, is able to draw up the sound pressure contour distribution maps of overall frequency and each dominant noise frequency. Also the main position of noise produced in the system can be determined.
In addition, this research had proven the linear distribution source method may overcome the error of predicting sound pressure within a prediction distance of the plane version of similar source method. Besides, it can reduce the effect of measuring error and improve the accuracy of the analysis.
Furthermore, comparison of error analysis between the similar source method and the linear distribution source method has also been made for three different sources and conditions. It has confirmed the feasibility of linear distribution source method.
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author2 |
Gee-Pinn Too |
author_facet |
Gee-Pinn Too Kian-Leong Yong 楊健量 |
author |
Kian-Leong Yong 楊健量 |
spellingShingle |
Kian-Leong Yong 楊健量 Application of Linear Distribution Source Method on Acoustical Holography |
author_sort |
Kian-Leong Yong |
title |
Application of Linear Distribution Source Method on Acoustical Holography |
title_short |
Application of Linear Distribution Source Method on Acoustical Holography |
title_full |
Application of Linear Distribution Source Method on Acoustical Holography |
title_fullStr |
Application of Linear Distribution Source Method on Acoustical Holography |
title_full_unstemmed |
Application of Linear Distribution Source Method on Acoustical Holography |
title_sort |
application of linear distribution source method on acoustical holography |
publishDate |
2007 |
url |
http://ndltd.ncl.edu.tw/handle/86286883590117088982 |
work_keys_str_mv |
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