Initial Fatigue Life Estimation of Welded Structural Components

Maksimović, Mirko; Maksimović, Katarina; Stamenković, Dragi; Maksimović, I. Vasović

doi:10.17559/tv-20200414015501

Cited by 5 publications

(5 citation statements)

References 5 publications

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“…For structural analysis of sandwich and thin-walled composite wing Finite Element Method (FEM) was used [9, 11-14, 19, 25, 26]. These results, later on, are compared with the own experimental test results [10,15,23,27,28]. After the numerical stress analysis of the UAV composite structure, usually, experimental tests are undertaken.…”

Section: Experimental Static Testing and Comparison With Numerical Resultsmentioning

confidence: 99%

Computational Fluid Dynamics and Strength Analysis of Composite UAV Wing

Vasić

Maksimović²,

Maksimović³

et al. 2021

Current Problems in Experimental and Computational Engineering

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This paper considers computational fluid dynamics (CFD) analysis and experimental test strength verification of the UAV wing made of composite materials. The CFD calculation and static strength testing results of specific UAV wing are illustrated. Specific attention was given to the definition of aerodynamics loads acting on UAV wing and experimental tests of UAV wing. For a precise definition of aerodynamic loading of UAV in this work the commercial CFD software was used. The work aims to carry out one-way fluid-solid interaction (FSI) for UAV structural design, in which aerodynamics loads obtained from CFD analysis can be applied on the vehicle structure for steady-state static FE analysis. To determine precise aerodynamic loads of UAV in this research, the complete "tail-aft on booms" shaped configuration UAV is modelled and analyzed using CFD numerical simulation.

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Section: Experimental Static Testing and Comparison With Numerical Resultsmentioning

confidence: 99%

Computational Fluid Dynamics and Strength Analysis of Composite UAV Wing

Vasić

Maksimović²,

Maksimović³

et al. 2021

Current Problems in Experimental and Computational Engineering

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“…Also, in the previous ten years, there has been a significant increase in the production of energy from RES in the world, primarily energy from wind [1,29,36] and solar [29] while in Serbia, these two energy sources are still at modest levels. In this regard, the RES strategy in the coming period should go in two directions.…”

Section: Discussionmentioning

confidence: 99%

Analysis of the Use of Renewable Energy Sources in the Republic of Serbia

Ristić

Radovanović

Perišić

et al. 2021

Current Problems in Experimental and Computational Engineering

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One of the consequences of the growth of the world industry is the increased need for electricity. It is imperative for developed countries to use renewable sources, both due to the declining reserves of conventional fuels and the reduction of environmental pollution. The unstoppable growth in the use of alternative sources is more than evident in these countries, while less developed countries are trying to keep up with them. This paper analyzes the development of renewable energy sources in the Republic of Serbia and some surrounding countries and the USA, Germany, France, Japan, Australia, and the Netherlands in the previous decade. A comparative analysis of utilization trends in developed countries in the world is also given, as well as a brief overview of the development of devices used in the processes of the utilization of these energy sources. Keywords Renewable energy • Electricity production • Solar energy • Wind energy 1 IntroductionThe increase in the industry's growth is directly related to the increase in the need for electricity [31]. Since the main energy sources are conventional, they have the largest share in obtaining electricity, with the increase in the use of conventional fuels, the negative impact on the environment also increases [26,33].

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“…Nowadays, most engineering tasks using numerical analysis are solved with satisfactory results using linear numerical approximation, that is, by applying the basic equation of the finite element method [11][12][13][14][15][16][17][18]. Given that nonlinear problems are more complex and cannot be described by the basic equation of the finite element method, it is necessary to define a nonlinear relation that is given by the expression [11]:…”

Section: Finite Element Analysis Of the Shrink Fitmentioning

confidence: 99%

“…Figure18 Dependence of the maximum value of the contact pressure on the rotor speed for the mean interference value[11] …”

mentioning

confidence: 99%

Finite Element Analysis of a Shrink Fitted Disc-Shaft Rotating System

2023

Teh. vjesn.

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In this paper, the shrink fit between the conical disk and the rotor shaft of a steam turbine was analysed with the aim of determining the rotor speed at which this fit is lost. The analysis was carried out numerically using the finite element method (FEM) in the Ansys software package. Three design values of disc-shaft joint interference were considered: minimum, maximum and mean. The rotor speed at which the shrink fit is lost is the lowest for minimum interference and the highest for maximum interference, which was expected. In other words, the rotor speed at which the shrink fit is lost is a linear function of the amount of interference (the allowance). The results of the analysis showed that the considered interferences of the shrink fit ensured the smooth transmission of torque in the range of speeds up to the operating speed and that the operation of the turbine is safe from that point of view.

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Initial Fatigue Life Estimation of Welded Structural Components

Cited by 5 publications

References 5 publications

Computational Fluid Dynamics and Strength Analysis of Composite UAV Wing

Computational Fluid Dynamics and Strength Analysis of Composite UAV Wing

Analysis of the Use of Renewable Energy Sources in the Republic of Serbia

Finite Element Analysis of a Shrink Fitted Disc-Shaft Rotating System

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