Calculation of the scattering coefficient of large scale periodic structure

Hai Tao Wang, Xiang Yang Zeng, Yan Shan Liu

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

The periodic structure is common used in engineering to improve the sound diffusion in room acoustics. It usually has large dimensions and it is difficult to calculate the scattering coefficient based on its original scale. In order to represent the scattering coefficients of a large scale periodic structure by those of a smaller one, the relations of the scattering coefficients of the periodic structures with different dimensions are analyzed in this paper. At first, a BMM (Boundary Meshless Method) for calculating the scattering coefficient is derived. The scattering coefficients of the periodic structures which have different numbers of sub-structures are calculated and compared. The computation results of different sub-structure numbers show that the periodic structure with 15 sub-structures can represent the samples which have more sub-structures. In addition, it can be proved that the square samples can be represented by those of the small and rectangular ones which have the same numbers of sub-periods. These conclusions not only greatly enhance the computational efficiency, but also show good prospect for fast evaluation of the periodic structures in engineering applications.

源语言英语
主期刊名Engineering Solutions for Manufacturing Processes IV
135-139
页数5
DOI
出版状态已出版 - 2014
活动2013 4th International Conference on Advances in Materials and Manufacturing, ICAMMP 2013 - Kunming, 中国
期限: 18 12月 201319 12月 2013

出版系列

姓名Advanced Materials Research
889-890
ISSN(印刷版)1022-6680

会议

会议2013 4th International Conference on Advances in Materials and Manufacturing, ICAMMP 2013
国家/地区中国
Kunming
时期18/12/1319/12/13

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