Topology Optimization Based on SA-BESO

Chen, Liping; Zhang, Hui; Wang, Wei; Zhang, Qiliang

doi:10.3390/app13074566

Cited by 3 publications

(1 citation statement)

References 27 publications

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“…Other works hybridising BESO with GAs might be consulted [227,228]. In a similar way, it is possible to find works hybridising BESO with other metaheuristics; such is the case of swarm optimisation algorithm [229], simulated annealing [230], and harmony search [231].…”

Section: Other Metaheuristic Approachesmentioning

confidence: 99%

On Topology Optimisation Methods and Additive Manufacture for Satellite Structures: A Review

Hurtado-Pérez,

Pablo-Sotelo,

Ramírez-López

et al. 2023

Aerospace

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Launching satellites into the Earth’s orbit is a critical area of research, and very demanding satellite services increase exponentially as modern society takes shape. At the same time, the costs of developing and launching satellite missions with shorter development times increase the requirements of novel approaches in the several engineering areas required to build, test, launch, and operate satellites in the Earth’s orbit, as well as in orbits around other celestial bodies. One area with the potential to save launching costs is that of the structural integrity of satellites, particularly in the launching phase where the largest vibrations due to the rocket motion and subsequent stresses could impact the survival ability of the satellite. To address this problem, two important areas of engineering join together to provide novel, complete, and competitive solutions: topology optimisation methods and additive manufacturing. On one side, topology optimisation methods are mathematical methods that allow iteratively optimising structures (usually by decreasing mass) while improving some structural properties depending on the application (load capacity, for instance), through the maximisation or minimisation of a uni- or multi-objective function and multiple types of algorithms. This area has been widely active in general for the last 30 years and has two main core types of algorithms: continuum methods that modify continuous parameters such as density, and discrete methods that work by adding and deleting material elements in a meshing context. On the other side, additive manufacturing techniques are more recent manufacturing processes aimed at revolutionising manufacturing and supply chains. The main exponents of additive manufacturing are Selective Laser Melting (SLM) (3D printing) as well as Electron Beam Melting (EBM). Recent trends show that topology-optimised structures built with novel materials through additive manufacturing processes may provide cheaper state-of-the-art structures that are fully optimised to better perform in the outer-space environment, particularly as part of the structure subsystem of novel satellite systems. This work aims to present an extended review of the main methods of structural topology optimisation as well as additive manufacture in the aerospace field, with a particular focus on satellite structures, which may set the arena for the development of future satellite structures in the next five to ten years.

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Section: Other Metaheuristic Approachesmentioning

confidence: 99%

On Topology Optimisation Methods and Additive Manufacture for Satellite Structures: A Review

Hurtado-Pérez,

Pablo-Sotelo,

Ramírez-López

et al. 2023

Aerospace

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Structural Optimization of the Brake Pedal using Artificial Intelligence

AKÇAY

2023

International Journal of Automotive Science and Technology

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In this study, weight reduction was performed on the brake pedal, which is one of the most important parts of the braking system, by using topology and shape optimi-zation, one of the structural optimization methods, respectively. The aim of the study is to develop an optimal design that reduces vehicle weight by finding the optimal material distribution for the brake pedal. The weight reduction process was carried out in two steps. In the first step, static analyses were performed on the starting brake pedal model. Later, topology optimization was performed for weight reduction pur-poses. After the topology optimization, new brake pedal design was created and weight reduction was performed. In the second step, shape optimization was per-formed using a genetic algorithm to obtain the optimal dimensions of the brake pedal. According to the optimization results, the weight of the design was reduced from 437 grams (g) to 326 grams (g) by topology optimization in the first step. So the new de-sign is 25.4% lighter compared to the first design. Later, as a result of shape optimiza-tion performed using a genetic algorithm, the weight was reduced from 326 g to 298 g and the optimal dimensions of the brake pedal were determined. Thus, with shape op-timization, a lighter brake pedal design of about 8.5% was achieved compared to to-pology optimization. As a result, the weight has been reduced from 437 g to 298 g, and the weight of the ideal brake pedal model is 31.8% lighter compared to the main model.

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Shape Optimization of Structures by Biological Growth Method

Bocko,

Delyová,

Kostka

et al. 2024

Applied Sciences

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Structural element shape optimization based on the biological growth method is increasingly used nowadays. This method consists of two main methods: topological optimization (soft kill option—SKO) and shape optimization (computer-aided optimization—CAO). This paper presents the solution procedures for both shape optimization and topological optimization. In applying these methods, first of all, a certain stress norm must be established, where the most appropriate and most used criterion is the equivalent stress according to von Mises. The application of the mentioned optimization methods is illustrated by several examples. The aim was to compare the change in volume or mass and the maximum stress of the structural elements between the different designs: the initial design, the design after topological optimization, and the design after shape optimization.

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Topology Optimization Based on SA-BESO

Cited by 3 publications

References 27 publications

On Topology Optimisation Methods and Additive Manufacture for Satellite Structures: A Review

On Topology Optimisation Methods and Additive Manufacture for Satellite Structures: A Review

Structural Optimization of the Brake Pedal using Artificial Intelligence

Shape Optimization of Structures by Biological Growth Method

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