A firefly algorithm based hybrid method for structural topology optimization

In this paper, a firefly algorithm based hybrid algorithm through retaining global convergence of firefly algorithm and ability to generate connected topologies of optimality criteria (OC) method is proposed as an alternative method to solve stress-based topology optimization problems. The lower and...

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Main Authors: Gebremedhen, H.S., Woldemichael, D.E., Hashim, F.M.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.23299 /
Published: Springer Science and Business Media Deutschland GmbH 2020
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85096205874&doi=10.1186%2fs40323-020-00183-0&partnerID=40&md5=e834bc8edae916b01c1b6f54ad3377c3
http://eprints.utp.edu.my/23299/
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spelling utp-eprints.232992021-08-19T07:26:01Z A firefly algorithm based hybrid method for structural topology optimization Gebremedhen, H.S. Woldemichael, D.E. Hashim, F.M. In this paper, a firefly algorithm based hybrid algorithm through retaining global convergence of firefly algorithm and ability to generate connected topologies of optimality criteria (OC) method is proposed as an alternative method to solve stress-based topology optimization problems. The lower and upper limit of design variables (0 and 1) were used to find initial material distribution to initialize the firefly algorithm based section of the hybrid algorithm. Input parameters, the number of fireflies, and the number of function evaluations were determined before the implementation of the firefly algorithm to solve formulated problems. Since the direct application of the firefly algorithm cannot generate connected topologies, outputs from the firefly algorithm were used as an initial input material distribution for the OC method. The proposed method was validated using two-dimensional benchmark problems and the results were compared with results using the OC method. Weight percentage reduction, maximum stress-induced, optimal material distribution, and compliance were used to compare results. Results from the proposed method showed that the proposed method can generate connected topologies which are free from the interference of end-users, and only depend on boundary conditions or design variables. From the results, the objective function (weight of the design domain) can be further reduced in the range of 5 to 15 compared to the OC method. © 2020, The Author(s). Springer Science and Business Media Deutschland GmbH 2020 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85096205874&doi=10.1186%2fs40323-020-00183-0&partnerID=40&md5=e834bc8edae916b01c1b6f54ad3377c3 Gebremedhen, H.S. and Woldemichael, D.E. and Hashim, F.M. (2020) A firefly algorithm based hybrid method for structural topology optimization. Advanced Modeling and Simulation in Engineering Sciences, 7 (1). http://eprints.utp.edu.my/23299/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description In this paper, a firefly algorithm based hybrid algorithm through retaining global convergence of firefly algorithm and ability to generate connected topologies of optimality criteria (OC) method is proposed as an alternative method to solve stress-based topology optimization problems. The lower and upper limit of design variables (0 and 1) were used to find initial material distribution to initialize the firefly algorithm based section of the hybrid algorithm. Input parameters, the number of fireflies, and the number of function evaluations were determined before the implementation of the firefly algorithm to solve formulated problems. Since the direct application of the firefly algorithm cannot generate connected topologies, outputs from the firefly algorithm were used as an initial input material distribution for the OC method. The proposed method was validated using two-dimensional benchmark problems and the results were compared with results using the OC method. Weight percentage reduction, maximum stress-induced, optimal material distribution, and compliance were used to compare results. Results from the proposed method showed that the proposed method can generate connected topologies which are free from the interference of end-users, and only depend on boundary conditions or design variables. From the results, the objective function (weight of the design domain) can be further reduced in the range of 5 to 15 compared to the OC method. © 2020, The Author(s).
format Article
author Gebremedhen, H.S.
Woldemichael, D.E.
Hashim, F.M.
spellingShingle Gebremedhen, H.S.
Woldemichael, D.E.
Hashim, F.M.
A firefly algorithm based hybrid method for structural topology optimization
author_sort Gebremedhen, H.S.
title A firefly algorithm based hybrid method for structural topology optimization
title_short A firefly algorithm based hybrid method for structural topology optimization
title_full A firefly algorithm based hybrid method for structural topology optimization
title_fullStr A firefly algorithm based hybrid method for structural topology optimization
title_full_unstemmed A firefly algorithm based hybrid method for structural topology optimization
title_sort firefly algorithm based hybrid method for structural topology optimization
publisher Springer Science and Business Media Deutschland GmbH
publishDate 2020
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85096205874&doi=10.1186%2fs40323-020-00183-0&partnerID=40&md5=e834bc8edae916b01c1b6f54ad3377c3
http://eprints.utp.edu.my/23299/
_version_ 1741196653373685760
score 11.62408

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