Computational analysis of a gas turbine blade with different materials

Singh, Haresh Pal; Rawat, Ashish Kumar; Manral, Avi Raj

doi:10.1016/j.matpr.2020.06.486

Cited by 12 publications

(6 citation statements)

References 11 publications

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“…Components in turbines must be able to tolerate a broad variety of loads, temperatures, and erosion [1]. Whether in commercial aircraft, fighter jets, aviation sector gas turbines are crucial [2]. During the engine testing and in the service of aircraft, it is observed that the failure occurs mostly in stator and rotor blades.…”

Section: Introductionmentioning

confidence: 99%

“…The response and loading conditions are assumed to be steady.The process of determining fundamental dynamic features of the system, such as damping factor, natural frequencies, and mode shapes, and utilizing them to construct a mathematical model for its dynamic response is known as modal analysis. The essential premise of modal analysis is that, simple elements are used, such as natural vibration modes to describe the complicated response in structural dynamics [3].In [2] the authors studied the stress and vibrational characteristics of gas turbine blades made of four different materials. In [4] the authors replaced a turbine blade with two different materials to have a better understanding of the characteristics of the turbine blade and to reduce the risks of failure.…”

Section: Introductionmentioning

confidence: 99%

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Structural and modal analysis of gas turbine blade using ansys

Paricharak

Tiwari

2022

IOP Conf. Ser.: Mater. Sci. Eng.

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Gas turbine technology has advanced significantly during the last twenty years. The advancement in materials technology, new coatings, and novel cooling techniques are driving the expansion. Material selection is critical since turbomachinery design is complicated, and material performance is directly connected to efficiency. The materials should be able to withstand high vibrations, high temperature, and pressure. In this work, the maximum stress and the deformation induced due to pressure were determined to study the vibrational response, mode shapes, and natural frequencies. Four different materials have been considered, namely Inconel 617, Titanium alloy, Rhenium alloy, and Nimonic 80A. A suitable material for a gas turbine blade was suggested after analyzing these materials. The 3D CAD model is modeled in CATIA V5 and analysis is carried out using FEM-based software ANSYS

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Structural and modal analysis of gas turbine blade using ansys

Paricharak

Tiwari

2022

IOP Conf. Ser.: Mater. Sci. Eng.

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“…The analyses are made to determine the positive or negative situation that may occur in the part due to external factors such as force, angular or radial velocity, and temperature acting on the part. ANSYS program is used for thermal and structural analyses [7][8][9][10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Structural and Thermal Analysis of F Class Gas Turbine Compressor Blade

GERENGİ

Polat

2022

Düzce Üniversitesi Bilim Ve Teknoloji Dergisi

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Gas turbines are used extensively for aircraft propulsion, land-based power generation, and industrial applications. They are consist of many parts. One of the important parts is the blade and disc. Blade and disc are individual components that make up the compressor section. That is why all effects on these components directly affect the unit itself. For that reason engineering calculations on such critical parts are important. Some power plants and gas turbines failed regarding wrong engineering calculations. One of them happened two years ago on GE (General Electric) 9FB gas turbine in Turkey. Some turbine blades have broken and created high-cost damage on the unit. Some engineering calculations have been failed regarding side running conditions. For that reason, this study has been performed to protect and verify the engineering value of AEN 94.3A F-type gas turbine side running conditions. In this study, the structural and thermal analysis of the final stage compressor rotor blade and disc, which are currently used on-site, was performed by using the ANSYS program. Initially, basic knowledge of blade and disc design drawings were reviewed and design steps of the existing 3D (Three dimensions) blade and disc configuration were described. For that reason, a 3D model of the existing compressor blade and the disc has been done in the SolidWorks design program. Later on, this model was transferred to the ANSYS program and analyzed. In the analysis, the parameters formed in the blade geometry were determined. By creating a design geometry with the selected parameters, the stress of the existing blade under operating conditions was examined. All external parameters in this study were taken from an F-type gas turbine operation under real field conditions. The stresses obtained from different regions on the blade were examined. After the thermal and structural analysis, obtained results have been compared with side engineering measurements. By comparison, it was observed and verified that the unit normal side running condition is safe and engineering calculations are sufficient.In this study before starting the analysis, general information about gas turbines has been presented. Gas turbines have been briefly introduced and then, the basic operation principles of turbines have been explained. As it is known, gas turbines are shaped based on thermodynamic principles. In this study, engineering thermodynamics in gas turbines is briefly explained as well.

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“…In the details of the SD, the structural analysis can predict the profile of stress, strain, and other factors [2][3][4][5][6][7]. For modal analysis, it has been used to figure out the natural frequency, mode shape, and total deformation, among other properties [8,9]. Thermal analysis has been applied to investigate thermal stress, thermal strain, and heat transfer [7,10].…”

Section: Introductionmentioning

confidence: 99%

“…From previous computer simulations, it has been indicated that inappropriate modifications can lead to inefficiency of the generator and also shorten its lifetime. Furthermore, in [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17], most researchers focused their study on such conditions (e.g., steady rotational speed, pressure, temperature, and flow rate). Hence, the AD study has been separated from the SD investigation, because simultaneous investigations of both the AD and the SD can be very complex and troublesome.…”

Section: Introductionmentioning

confidence: 99%

A Proper Shape of the Trailing Edge Modification to Solve a Housing Damage Problem in a Gas Turbine Power Plant

et al. 2021

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To solve the housing damage problem of a fractured compressor blade (CB) caused by an impact on the inner casing of a gas turbine in the seventh stage (from 15 stages), modifications of the trailing edge (TE) of the CB have been proposed, namely 6.5 mm curved cutting and a combination of 4 mm straight cutting with 6.5 mm curved cutting. The simulation results of the modifications in both aerodynamics variables Cl and Cd and the pressure ratio, including structural dynamics such as a normalized power spectrum, frequency, total deformation, equivalent stress, and the safety factor, found that 6.5 mm curved cutting could deliver the aerodynamics and structural dynamics similar to the original CB. This result also overcomes the previous work that proposed 5.0 mm straight cutting. This work also indicates that the operation of a CB gives uneven pressure and temperature, which get higher in the TE area. The slightly modified CB can present the difference in the properties of both the aerodynamics and the structural dynamics. Therefore, any modifications of the TE should be investigated for both properties simultaneously. Finally, the results from this work can be very useful information for the modification of the CB in the housing damage problem of the other rotating types of machinery in a gas turbine power plant.

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Computational analysis of a gas turbine blade with different materials

Cited by 12 publications

References 11 publications

Structural and modal analysis of gas turbine blade using ansys

Structural and modal analysis of gas turbine blade using ansys

Structural and Thermal Analysis of F Class Gas Turbine Compressor Blade

A Proper Shape of the Trailing Edge Modification to Solve a Housing Damage Problem in a Gas Turbine Power Plant

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