噪声与振动控制2018，Vol.38Issue(z1)：160-164,5.DOI:10.3969/j.issn.1006-1355.2018.Z1.035
一种基于快速BEM-FEM的声振耦合问题快速扫频方法
A Numerical Method for Fast Frequency Sweeping Analysis in Vibro-acoustic Problems based on Fast BEM-FEM
摘要
Abstract
The vibro-acoustic coupling problems of structures are common in many fields such as navigation and aerospace. The fast BEM-FEM hybrid method is an effective method to solve these problems. It is often necessary to perform the frequency sweeping in terms of the vibro-acoustic problems. However, the computer time consuming is very large to complete the frequency sweeping analysis by the complete method, and the existing traditional methods for fast frequency sweeping (FFS) are no longer applicable for this problem because the fast BEM matrix is introduced. In this paper, the response sampling method proposed by our research group was used to construct a new projection space, and a FFS method for vibro-acoustic problem based on the fast BEM-FEM was proposed by the model order reduction technique using the new projection space. Finally, the correctness and performance of the FFS method were verified through two typical examples. Compared with the complete method, the computer time consuming of the FFS method proposed in this paper is less than one-tenth of that of the complete method, and the computation accuracy is stable around 1.0×10-5.关键词
振动与波/声振耦合/快速边界元-有限元/快速扫频/响应采样法/模型降阶Key words
vibration and wave/vibro-acoustic problems/fast BEM-BEM/fast frequency sweeping/response sampling method/model order reduction分类
通用工业技术引用本文复制引用
王俊鹏,校金友,文立华..一种基于快速BEM-FEM的声振耦合问题快速扫频方法[J].噪声与振动控制,2018,38(z1):160-164,5.基金项目
国家自然科学基金资助项目(11472217) （11472217）
