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Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 27 , No. 5

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Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 27, No. 5, pp. 391-400
Abbreviation: J. Korean Soc. Manuf. Technol. Eng.
ISSN: 2508-5107 (Online)
Print publication date 15 Oct 2018
Received 03 Apr 2018 Revised 01 Jun 2018 Accepted 03 Aug 2018
DOI: https://doi.org/10.7735/ksmte.2018.27.5.391
Topological Shape Optimization Based on Harmony Search Method
Seung-Min Lee^a ; Seog-Young Han^a^{, *}
aSchool of Mechanical Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea


Correspondence to : ^*Tel.: +82-2-2220-0456 Fax: +82-2-2220-2299 E-mail address: syhan@hanyang.ac.kr (Seog-Young Han).

Abstract

A new topological shape optimization scheme based on the harmony search (HS) method is proposed, which provides an optimized structural shape for topology and shape optimization simultaneously via shape optimization only. The parameters of the HS method such as harmony memory considering rate, pitch adjusting rate, and band width for topological shape optimization are suggested. Additionally, new schemes such as boundary element index and pitch control number for more stable and robust optimized shape are implemented, and the results of the proposed algorithm are compared with those of the discrete level set method (LSM) for some numerical examples to verify the effectiveness and applicability. From these results, it is shown that objective values and optimized topological shape of the proposed algorithm are similar and convergence rate is improved at least 42% compared to those of the discrete LSM.


Keywords: Harmony search, Shape optimization, Topological shape optimization, Boundary element index, Boundary elements

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