Sizing and Topology Optimization of Trusses Using Genetic Algorithm

Delyová, Ingrid; Frankovský, Peter; Bocko, Jozef; Trebuňa, Peter; Živčák, Jozef; Schürger, Barbara; Janigová, S.

doi:10.3390/ma14040715

Cited by 19 publications

(24 citation statements)

References 38 publications

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“…In this respect, it has been found that, despite the rapid developments in computing technology, the demands associated with computational costs and time constraints relating to the use of resources in the field of structural analysis do not preclude them. This situation arises due to the constant growth in the requirements for accuracy and therefore complexity of analytical models (Bocko [3], Delyová et al [4]).…”

Section: Introductionmentioning

confidence: 99%

Application of Reanalysis Methods in Structural Mechanics

Delyová

Frankovský

Bocko

et al. 2022

International Journal of Applied Mechanics and Engineering

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When designing structures, it is often necessary to re-analyse a structure that is different in some parts from the original one. As real structures are often complex, their analysis is therefore very challenging. In such cases, reanalysis methods are advantageously used. The aim of this paper is to approach the problem of solving the constructions using reanalysis method in which the time taken in solving algebraic equations is reduced. In particular, the purpose of this work is to demonstrate on a chosen system the time savings and the advantages of the chosen direct efficient reanalysis method for a given design problem. A basic condition for meeting these criteria is the modernization of computational procedures in the mechanics of compliant solids.

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Section: Introductionmentioning

confidence: 99%

Application of Reanalysis Methods in Structural Mechanics

Delyová

Frankovský

Bocko

et al. 2022

International Journal of Applied Mechanics and Engineering

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“…Therefore, much research explores the possibility of using genetic algorithms in order to optimize the designed structures of various materials [16][17][18]. In the case of steel structures, they are mostly used for topology optimization to generate innovative lightweight rod structures with interesting and efficient rods configurations that are difficult to obtain in a conventional way [19]. Topological optimization of trusses, steel frames, and grid structures is described in many publications.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Curvilinear Steel Rod Structures Based on Minimal Surfaces

Dzwierzynska

Labuda

2021

Materials

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The article deals with shaping effective curvilinear steel rod roof structures using genetic algorithms by implementing them for the analysis of various case studies in order to find new and efficient structures with positive characteristics. The structures considered in this article are created on the basis of the Enneper surface and minimal surfaces stretched on four arcs. On the Enneper surface, a single layer grid is used, while on the other surfaces, two-layer ones. The Enneper form structure with four supports and the division into an even number of parts along the perimeter of the covered place proved to be the most efficient, and the research showed that small modifications of the initial base surface in order to adapt the structure to the roof function did not significantly affect its effectiveness. However, the analysis and comparison of single and double-shell rod structures based on minimal surfaces stretched on four arcs have shown that a single-shell structure is much more effective than a double one. The paper considers the theoretical aspects of shaping effective structures, taking their masses as the optimization criterion. The optimization helped to choose the best solutions due to structures’ shapes and topologies. However, the obtained, optimized results can find practical applications after conducting physical tests.

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“…Relatively simple assumptions used to determine stresses found in truss members make it possible to apply various techniques and algorithms to optimise their shape [ 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 ]. The popularisation of numerical methods, as well as the availability of CAD software have facilitated the design process for systems based on lattice beams [ 16 , 17 , 18 , 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Structure of Lattice Beams on Their Strength Properties

et al. 2021

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This paper presents the strength properties of wooden trusses. The proposed solutions may constitute an alternative to currently produced trusses, in cases when posts and cross braces are joined with flanges using punched metal plate fasteners. Glued carpentry joints, although requiring a more complicated manufacturing process, on the one hand promote a more rational utilisation of available structural timber resources, while on the other hand they restrict the use of metal fasteners. The results of the conducted analyses show that the proposed solutions at the current stage of research are characterised by an approx. 30% lower static bending strength compared to trusses manufactured using punched metal plate fasteners. However, these solutions make it possible to produce trusses with load-bearing capacities comparable to that of structural timber of grade C24 and stiffness slightly higher than that of lattice beams manufactured using punched metal plate fasteners. The strength of wooden trusses manufactured in the laboratory ranged from nearly 20 N/mm2 to over 32 N/mm2. Thus, satisfactory primary values for further work were obtained.

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Sizing and Topology Optimization of Trusses Using Genetic Algorithm

Cited by 19 publications

References 38 publications

Application of Reanalysis Methods in Structural Mechanics

Application of Reanalysis Methods in Structural Mechanics

Modeling of Curvilinear Steel Rod Structures Based on Minimal Surfaces

Influence of the Structure of Lattice Beams on Their Strength Properties

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