Sizing and Shape Optimization of Discrete Truss Employing a Target-Oriented Krill Herd AlgorithmSource: ASCE-ASME J Risk and Uncert in Engrg Sys Part B Mech Engrg:;2024:;volume( 010 ):;issue: 002::page 21108-1DOI: 10.1115/1.4064644Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The krill herd (KH) algorithm is widely used for optimizing truss structures as no gradient information is necessary, and only a few parameters require adjustment. However, when the truss structure becomes discrete and complex, KH tends to fall into a local optimum. Therefore, a novel target-oriented KH (TOKH) algorithm is proposed in this study to optimize the design of discrete truss structures. Initially, a crossover operator is established between the “best krill” and “suboptimal krill” to generate a robust “cross krill” for global exploration. Additionally, an improved local mutation and crossover (ILMC) operator is introduced to fine-tune the “center of food” and candidate solutions for local exploitation. The proposed method and other optimization approaches are experimentally compared considering 15 benchmark functions. Then, the performance of the TOKH algorithm is evaluated based on four discrete truss structure optimization problems under multiple loading conditions. The obtained optimization results indicate that the proposed method presents competitive solutions in terms of accuracy, unlike other algorithms in the literature, and avoids falling into a local minimum.
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contributor author | Cheng, Lixiang | |
contributor author | Zhao, Yan-Gang | |
contributor author | Li, Pei-Pei | |
contributor author | Yan, Lewei | |
date accessioned | 2024-04-24T22:45:26Z | |
date available | 2024-04-24T22:45:26Z | |
date copyright | 4/2/2024 12:00:00 AM | |
date issued | 2024 | |
identifier issn | 2332-9017 | |
identifier other | risk_010_02_021108.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4295816 | |
description abstract | The krill herd (KH) algorithm is widely used for optimizing truss structures as no gradient information is necessary, and only a few parameters require adjustment. However, when the truss structure becomes discrete and complex, KH tends to fall into a local optimum. Therefore, a novel target-oriented KH (TOKH) algorithm is proposed in this study to optimize the design of discrete truss structures. Initially, a crossover operator is established between the “best krill” and “suboptimal krill” to generate a robust “cross krill” for global exploration. Additionally, an improved local mutation and crossover (ILMC) operator is introduced to fine-tune the “center of food” and candidate solutions for local exploitation. The proposed method and other optimization approaches are experimentally compared considering 15 benchmark functions. Then, the performance of the TOKH algorithm is evaluated based on four discrete truss structure optimization problems under multiple loading conditions. The obtained optimization results indicate that the proposed method presents competitive solutions in terms of accuracy, unlike other algorithms in the literature, and avoids falling into a local minimum. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Sizing and Shape Optimization of Discrete Truss Employing a Target-Oriented Krill Herd Algorithm | |
type | Journal Paper | |
journal volume | 10 | |
journal issue | 2 | |
journal title | ASCE-ASME J Risk and Uncert in Engrg Sys Part B Mech Engrg | |
identifier doi | 10.1115/1.4064644 | |
journal fristpage | 21108-1 | |
journal lastpage | 21108-15 | |
page | 15 | |
tree | ASCE-ASME J Risk and Uncert in Engrg Sys Part B Mech Engrg:;2024:;volume( 010 ):;issue: 002 | |
contenttype | Fulltext |