Thermal fatigue analysis of turbine discs on the base of deformation criterion

Getsov, L. B.; Семенов, А. С.; Ignatovich, Igor

doi:10.1016/j.ijfatigue.2016.12.018

Cited by 14 publications

(5 citation statements)

References 19 publications

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“…5). Damage calculation and estimation of the number of cycles before the formation of macrocracks were made on the basis of deformation four-member criterion [7][8][9][10][11]:…”

Section: Methodsmentioning

confidence: 99%

“…The FE simulation is required for the computation of inhomogeneous stress and inelastic strain fields. The aim of the research is to study systematically the effect of delay at maximum temperature on the thermal fatigue durability on the base of the deformation criterion [7][8][9][10][11] for single crystal superalloys using the results of finite element (FE) simulation of full-scale experiments and results of analytical formulae and to study systematically the effect of crystallographic orientation on the thermal fatigue durability. The results of simulation and their verification are obtained for single-crystal nickel-based superalloy VZhM4.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of crystallographic orientation influence on thermal fatigue with delay of the single-crystal corset sample by means of thermo-elasto-visco-plastic finite-element modeling

Savikovskii

Семенов

Getsov³

2018

MATEC Web Conf.

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The influence of a delay time at the maximum temperature on the number of cycles before the macrocrack initiation for two thermal loading programs was investigated for single-crystal nickel-based superalloy VZhM4. An analytic approximation of a delay time influence was proposed. Comparison of the computational results and analytic formula on the basis of constitutive equations with the experimental data was performed for various single-crystal nickel-based superalloys and showed a good accuracy. The influence of crystallographic orientation of the corset sample on the thermal fatigue durability with delay times was investigated for various thermal loading programs and single-crystal nickel-based superalloys.

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“…5). Damage calculation and estimation of the number of cycles before the formation of macrocracks were made on the basis of deformation four-member criterion [7][8][9][10][11]:…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of crystallographic orientation influence on thermal fatigue with delay of the single-crystal corset sample by means of thermo-elasto-visco-plastic finite-element modeling

Savikovskii

Семенов

Getsov³

2018

MATEC Web Conf.

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“…The objective of the calculation is that it is necessary to calculate the values of, РR and РL of the right and left helical surfaces, the number of their entries iR and iL in which the rear corners б on the sides of the teeth are equal to each other and their values for efficient chip removal (Getsov et al, 2017;Klochkov, 2018;Klochkov et al, 2018).…”

Section: Problem Statementmentioning

confidence: 99%

Design and Manufacture of Hob Mills for the Formation of Straight Slots Using the Principles of Screw Backing

Istotskiy¹,

Protasev²

2019

Int J Math, Eng, Manag Sci

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The article shows the possibility of designing and manufacturing using multi-coordinate grinding and sharpening machines with CNC for workable worm mills for machining straight-slotted slots. Screw backing provides the necessary values of the rear side corners, and the ability of CNC machines to achieve the required accuracy and manufacturability of the tool. The lack of such tools consists in the increase of the diametrical sizes in comparison with the classically used ones. A positive effect when using the principles of screw backlash is the shaping of the cutting edges of the teeth in a checkerboard pattern, which significantly reduces the cutting forces. The use of techno-logical 3D models as a result of the design allows, at the design stage, to evaluate the arising design flaws and to make the necessary corrective actions into the initial data of the tool.

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“…Przewodność cieplna styku części winna być również dostateczna. Za pomocą bezpośredniej symulacji elementami skończonymi w procesach odkształcania i pękania obecnie wykorzystuje się model termo-elasto-lepkoplastyczny materiału i kryterium uszkodzenia odkształceniem [30]. Znajdują zastosowanie także modele zastępcze, budowane w celu zapewnienia szybkiego przybliżonego rozwiązania właściwości połączenia skurczowo-rozprężnego, zamiast czasochłonnych obliczeń [31].…”

Section: Analiza Literaturyunclassified

Thermo-mechanical analysis of stress and deformation of engine cylinder block assembly as the attempt to explain an uncontrolled ignition of air-fuel mixture

Michalski

Woś

2018

atest

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The paper analyzes the possible cause of self-ignition of air-fuel mixture in spark-ignition internal combustion engine loaded with maximum power during tests on the engine dynamometer stand. It leads to incorrect engine operation and may also occur during the flight of an aircraft or helicopter. In order to explain the cause of incorrect engine operation, a non-linear analysis using the finite element method was applied. A discreet model of a simplified engine cylinder assembly system comprising a cylinder body and the liner was determined. The numerical analysis includes both the mechanical force resulting from loading the cylinder liner clamp in the body as well as the pressure of the working medium pressure and the load on the non-uniform temperature field taken from engine test-bed measurements. The results of nonlinear static analysis of stresses and strains for the cylinder body-liner connection have shown that in the area of TDC where outer piston ring turns back, high stresses and plastic deformation of the cylinder liner occurr, causing a lack of contact between these elements. This disrupts the heat transfer from the cylinder liner to the cylinder body and creates the possibility of uncontrolled ignition of the fuel-air mixture.

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Thermal fatigue analysis of turbine discs on the base of deformation criterion

Cited by 14 publications

References 19 publications

Analysis of crystallographic orientation influence on thermal fatigue with delay of the single-crystal corset sample by means of thermo-elasto-visco-plastic finite-element modeling

Analysis of crystallographic orientation influence on thermal fatigue with delay of the single-crystal corset sample by means of thermo-elasto-visco-plastic finite-element modeling

Design and Manufacture of Hob Mills for the Formation of Straight Slots Using the Principles of Screw Backing

Thermo-mechanical analysis of stress and deformation of engine cylinder block assembly as the attempt to explain an uncontrolled ignition of air-fuel mixture

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