Method for optimising the performance of PML in anchor-loss limited model via COMSOL
Method for optimising the performance of PML in anchor-loss limited model via COMSOL
Perfectly matched layer has been used for solving anchor-loss limited quality factor in the Micro electromechanical systems. However, setting up a well-behaved perfectly matched layer requires users to change the parameters of a perfectly matched layer to give correct results, while the current existing methods for choosing the right parameters are vague and lack theoretical support. Based on the mathematical theory of perfectly matched layer and simulation results of a beam structure's quality factor, this paper proposes a method for choosing the parameter to optimise the performance of perfectly matched layer in COMSOL. The accuracy of the proposed method is proved by matching the effect of substrate height on beam's quality factor with theory prediction. The author also studies the effect of beam height and beam width on the quality factor of the beam. The results demonstrate that simulated quality factors are in agreement with analytical values when the ratio of height over length is small but will show great divergence when height equals the length. This trend can be observed for the beam width as well. Especially for larger ratio of beam width over beam length, instead of decreasing monotonously as analytical equitation would expect, the simulated quality factor will converge into a stable value of 1700, which matches the result of two-dimensional model for the same beam structure. This means that a three-dimensional model has to be used for estimating the quality factor of a beam structure.
327-336
Li, Peng
02f3a864-8335-4976-b9ff-d40f7fcb3f63
Ou, Jun-Yu
3fb703e3-b222-46d2-b4ee-75f296d9d64d
Yan, Jize
786dc090-843b-435d-adbe-1d35e8fc5828
24 May 2022
Li, Peng
02f3a864-8335-4976-b9ff-d40f7fcb3f63
Ou, Jun-Yu
3fb703e3-b222-46d2-b4ee-75f296d9d64d
Yan, Jize
786dc090-843b-435d-adbe-1d35e8fc5828
Li, Peng, Ou, Jun-Yu and Yan, Jize
(2022)
Method for optimising the performance of PML in anchor-loss limited model via COMSOL.
IET Science, Measurement & Technology, 16 (6), .
(doi:10.1049/smt2.12107).
Abstract
Perfectly matched layer has been used for solving anchor-loss limited quality factor in the Micro electromechanical systems. However, setting up a well-behaved perfectly matched layer requires users to change the parameters of a perfectly matched layer to give correct results, while the current existing methods for choosing the right parameters are vague and lack theoretical support. Based on the mathematical theory of perfectly matched layer and simulation results of a beam structure's quality factor, this paper proposes a method for choosing the parameter to optimise the performance of perfectly matched layer in COMSOL. The accuracy of the proposed method is proved by matching the effect of substrate height on beam's quality factor with theory prediction. The author also studies the effect of beam height and beam width on the quality factor of the beam. The results demonstrate that simulated quality factors are in agreement with analytical values when the ratio of height over length is small but will show great divergence when height equals the length. This trend can be observed for the beam width as well. Especially for larger ratio of beam width over beam length, instead of decreasing monotonously as analytical equitation would expect, the simulated quality factor will converge into a stable value of 1700, which matches the result of two-dimensional model for the same beam structure. This means that a three-dimensional model has to be used for estimating the quality factor of a beam structure.
Text
Clean revised Full text
- Accepted Manuscript
Text
IET Science Measure Tech - 2022 - Li - Method for optimising the performance of PML in anchor‐loss limited model via
- Version of Record
More information
Accepted/In Press date: 2 May 2022
e-pub ahead of print date: 23 May 2022
Published date: 24 May 2022
Additional Information:
Funding Information:
The author would like to acknowledge Mr Shengqi Yin for the valuable opinions during the writing of this paper and Mr Chuang Sun for the helpful discussion about mechanical engineering. The author would also like to acknowledge the use of the IRIDIS High Performance Computing Facility, and associated support services at the University of Southampton, in the completion of this work.
Publisher Copyright:
© 2022 The Authors. IET Science, Measurement & Technology published by John Wiley & Sons Ltd on behalf of The Institution of Engineering and Technology.
Identifiers
Local EPrints ID: 457717
URI: http://eprints.soton.ac.uk/id/eprint/457717
ISSN: 1751-8830
PURE UUID: fb2e5b79-bb04-4660-a5f6-7fbed5f9a38b
Catalogue record
Date deposited: 16 Jun 2022 00:23
Last modified: 17 Mar 2024 03:48
Export record
Altmetrics
Contributors
Author:
Peng Li
Author:
Jun-Yu Ou
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics