A Hybrid Smoothed Finite Element Method for Predicting the Sound Field in the Enclosure with High Wave Numbers
Joint Authors
Wang, Haitao
Zeng, Xiangyang
Lei, Ye
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-04-01
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Wave-based methods for acoustic simulations within enclosures suffer the numerical dispersion and then usually have evident dispersion error for problems with high wave numbers.
To improve the upper limit of calculating frequency for 3D problems, a hybrid smoothed finite element method (hybrid SFEM) is proposed in this paper.
This method employs the smoothing technique to realize the reduction of the numerical dispersion.
By constructing a type of mixed smoothing domain, the traditional node-based and face-based smoothing techniques are mixed in the hybrid SFEM to give a more accurate stiffness matrix, which is widely believed to be the ultimate cause for the numerical dispersion error.
The numerical examples demonstrate that the hybrid SFEM has better accuracy than the standard FEM and traditional smoothed FEMs under the condition of the same basic elements.
Moreover, the hybrid SFEM also has good performance on the computational efficiency.
A convergence experiment shows that it costs less time than other comparison methods to achieve the same computational accuracy.
American Psychological Association (APA)
Wang, Haitao& Zeng, Xiangyang& Lei, Ye. 2019. A Hybrid Smoothed Finite Element Method for Predicting the Sound Field in the Enclosure with High Wave Numbers. Shock and Vibration،Vol. 2019, no. 2019, pp.1-9.
https://search.emarefa.net/detail/BIM-1211485
Modern Language Association (MLA)
Wang, Haitao…[et al.]. A Hybrid Smoothed Finite Element Method for Predicting the Sound Field in the Enclosure with High Wave Numbers. Shock and Vibration No. 2019 (2019), pp.1-9.
https://search.emarefa.net/detail/BIM-1211485
American Medical Association (AMA)
Wang, Haitao& Zeng, Xiangyang& Lei, Ye. A Hybrid Smoothed Finite Element Method for Predicting the Sound Field in the Enclosure with High Wave Numbers. Shock and Vibration. 2019. Vol. 2019, no. 2019, pp.1-9.
https://search.emarefa.net/detail/BIM-1211485
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1211485