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《Acta Simulata Systematica Sinica》 2004-10
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Simulation for Sound Radiation of Structure Based on Virtual Boundary Element Least Square Method

CUI Zhe, HUANG Xie-qing (Institute of Vibration and Noise Control, School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, China)  
In this paper, virtual boundary element least square method is applied to study structural sound radiation. The formula of virtual boundary element least square method is founded and the computer program is coded to calculate the acoustic radiation of the structure. Compared with the general boundary element method, numerical treatment for singular integration is avoided, and the coefficient matrix is a symmetrical one. The simulation result of these numerical examples show that the method is simple and efficient, and has higher calculation precision of the near-field of acoustic radiation. The method can also overcome the non-uniqueness problem effectively. It can be suitable for engineering application.
【CateGory Index】: O328
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