Optimization of Rigidly Supported Guyed Masts

Belevičius, Rimantas; Jatulis, Donatas; Rusakevičius, Dainius; Mačiūnas, Darius

doi:10.1155/2017/4561376

Cited by 8 publications

(3 citation statements)

References 11 publications

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“…Talaslioglu [117] minimized weight and joint displacements of grid structures, being the constraints related to serviceability and ultimate strength. Belevicius et al [118] presented a technique for simultaneous shape, sizing and topology optimization of tall guyed masts. The mast structure was optimized for self-weight and wind loading, considering strength, stability and slenderness constraints.…”

Section: Optimization In Structural Problemsmentioning

confidence: 99%

Usage of Optimization Techniques in Civil Engineering During the Last Two Decades

Dede

2019

CTCSE

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In the real world, there are many problems in which it is desirable to optimize one or more objective functions at the same time. These are known as single and multi-objective optimization problems respectively and continuous research is being conducted in this field and nature inspired heuristic optimization methods (also called advanced optimization algorithms) are proving to be better than the classical deterministic methods and thus are widely used. These algorithms have been applied to many engineering optimization problems and proved effective for solving some specific kinds of problems. In this paper, a review of the most popular optimization algorithms used in different problems related to the civil engineering during the last two decades is presented. It is hoped that this work will be useful to researchers involved in optimization.

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Section: Optimization In Structural Problemsmentioning

confidence: 99%

Usage of Optimization Techniques in Civil Engineering During the Last Two Decades

Dede

2019

CTCSE

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“…Juozapaitis et al [13] discussed the numerical analysis of masts using specialized computeraided design packages, assessing stress and strain fields. Belevičius et al [14,15] investigated the optimal schemes of tall guyed masts under wind loadings, simultaneously optimizing topology, shape, and sizing. Pezo et al [16] focused on the non-linear behavior and stability of guyed masts under wind loads, employing numerical simulations and modal and stability analyses.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Structural Vibrations in Masts. A Practical Study Applied to a 28-Meter Tugboat.

Silva-Campillo,

Pérez-Arribas

2024

Preprint

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This article investigates the vibration analysis of the mast on the bridge top of a 28-meter tugboat, in the quasi-static regime. The study aims to determine the natural frequencies using an equivalent dynamic model of the mast and considers the accelerations of different degrees of freedom of the vessel. Practical design and reinforcement strategies for the local bridge top structure are proposed, utilizing numerical and analytical tools. The investigation explores various alternatives to optimize the structural arrangement. By analyzing the modal behavior, insights are provided for efficient design and reinforcement. The results contribute to understand the mast's vibration characteristics, offering guidance for similar structures. The study employs numerical and analytical methods, enhancing the optimization of the mast's behavior. It determines natural frequencies, proposes practical design strategies, and explores alternatives for structural optimization. The findings provide insights for shipbuilding and mast design applications in other vessels and industries such as radar mast, compass deck and guyed mast.

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“…Some optimizations and parametric analyses have been carried out as well. Belevičius et al optimized the double-level guyed mast to obtain the minimum weight design using the Genetic Algorithm and simulated annealing algorithm [18,19] and revealed the dependence of the mast mass on the number of guys' levels [20]. Moreover, Elena Parnás et al discussed the influence of asymmetrical anchors on behavior of the guyed mast under wind loads [21].…”

Section: Introductionmentioning

confidence: 99%

Modeling and Analysis of a Large-Scale Double-Level Guyed Mast for Membrane Antennas

Liu

et al. 2020

Mathematical Problems in Engineering

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This paper proposes a double-level guyed membrane antenna for stiffness improvement of a large-scale tri-prism deployable mast using the collapsible tubular mast (CTM). Initially, the construction of the antenna and the modeling of the CTM boom are illustrated. Afterwards, the central mast with isosceles triangular cross section is mathematically equivalent to a continuum beam, in which the equations of motion and the constitutive relations are derived. Based on the equivalent central beam, the double-level guyed mast for the membrane antenna is modeled as a 2(3-SPS-S) mechanism, and then velocity Jacobian matrices and stiffness matrices of SPS branches are constructed. Additionally, the total stiffness matrix of the equivalent mechanism is derived with the principle of virtual work and then evaluated as an accurate approach. Finally, with the aim to improve the static stiffness of the double-level guyed mast, the numerical analysis using the Genetic Algorithm (GA) is carried out for optimizing the distribution of guys in terms of anchor positions and attachment heights.

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Optimization of Rigidly Supported Guyed Masts

Cited by 8 publications

References 11 publications

Usage of Optimization Techniques in Civil Engineering During the Last Two Decades

Usage of Optimization Techniques in Civil Engineering During the Last Two Decades

Numerical Analysis of Structural Vibrations in Masts. A Practical Study Applied to a 28-Meter Tugboat.

Modeling and Analysis of a Large-Scale Double-Level Guyed Mast for Membrane Antennas

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