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| Research on sound radiation from body in free field | |
| 引用本文： | ZHAO Xiang and HUANG Youling (Dept.of Engineering Mechanics,Xi''''an Jiaotong University,Xi''''an 710049). Research on sound radiation from body in free field[J]. 声学学报：英文版, 1994, 0(1) |
| 作者姓名： | ZHAO Xiang and HUANG Youling (Dept.of Engineering Mechanics Xi''''an Jiaotong University Xi''''an 710049) |
| 作者单位： | Dept.of Engineering Mechanics，Xi'an Jiaotong University，Xi'an 710049 |
| 摘 要： | I.IntroductionWhenastructurcvibratcs,itsvibratingsurfacewillmakesurroundingmediummovetogethcrwithit.Ifthernotionissofastthatthcmediumroundthestructureproduccaloca1contractionandcxpansionandthcypropagatefaraway,thesoundradiationisformed.Itispossiblctodcscribeanalytica11ytheradiationfic1dofsimplyandregularlyshapcdsourcessuchaspointsoundsourccs,spherica1soundsourccsandinflnite1engthllnearsoundsourccs,butitisa1mostimpossib1ctosolvetheradiationfiledbyanyanalyt-ica1methodforsourcesofvcrycomplicateds… |
Research on sound radiation from body in free field |
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| ZHAO Xiang and HUANG Youling. Research on sound radiation from body in free field[J]. Chinese Journal of Acoustics, 1994, 0(1) | |
| Authors: | ZHAO Xiang and HUANG Youling |
| Abstract: | There is a quantitative relation between vibration and radiation noise of a structure body. In this paper, the Helmholtz integral equation, which is the theoretical formula for sound radiation from a body in the free field, is discretized with the boundary element method and the exterior sound radiation field is calculated for a given specified surface velocity of elastic vibration of an arbitrarily shaped body. The characteristics of the sound field radiated from the body is therefore effectively predicted. |
| Keywords: | Sound radiation Free field Boundary element method |
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