Numerical Analysis of Stress and Strain in Specimens with Rectangular Cross-Section Subjected to Torsion and Bending with Torsion

Faszynka, S.; Lewandowski, Janusz; Rozumek, Dariusz

doi:10.1515/ama-2016-0001

Cited by 4 publications

(4 citation statements)

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“…There are numerous methods to study the different mechanisms of fatigue phenomena, which are reflected in the increasing number of fatigue testing approaches for the most critical cases (McDowell 1989;Berto and Zappalorto 2011;Martins et al 2020;Moreira et al 2020;Mendes et al 2020). The failure element on the fracture surface depends on the material type and the loading conditions under which it is subjected during its lifetime (Carpinteri et al 2002;Faszynka et al 2016;Branco et al 2018;Correia et al 2018;He et al 2021). This loading history can be traced from the fracture surface topology using fractography concepts.…”

Section: Introductionmentioning

confidence: 99%

Fracture surface formation of notched 2017A-T4 aluminium alloy under bending fatigue

Macek

2021

Int J Fract

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The effect of cyclic loading on facture surface topology in notched components made by aluminium alloys is not completely clear. Fractography and fracture mechanics can help to understand this interdependency. This paper aims to study the distribution of the fracture surface roughness of notched 2017A-T4 aluminium alloy after bending fatigue using an optical focus-variation surface measurement technique by applying the fracture zone concept. The effects of stress level at the notch root and the load ratio on fatigue crack growth and fracture surfaces are analysed. Profile and areal surface parameters of four fracture surface regions were investigated at incremental crack lengths of the specimens. Studies have confirmed that the surface areas associated with the main stages of fatigue phenomenon (i.e. crack initiation, crack propagation, and final rupture) have significant differences in roughness which can be explained by the different loading scenarios. Overall, fatigue fracture surfaces have smallest roughness values at the crack initiation stage and a gradual increase during the fatigue crack growth stage.

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Section: Introductionmentioning

confidence: 99%

Fracture surface formation of notched 2017A-T4 aluminium alloy under bending fatigue

Macek

2021

Int J Fract

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“…9. Size of w and h of the weld and designations for equations (1) - (5) Correction function Y for K including shape and load of specimens was obtained from the Eq. (Rozumek and Macha, 2009) (2)…”

Section: Methodology Of Conducting Computationsmentioning

confidence: 99%

“…The side length of the single element for solid specimens and for the specimens with concave welds was 0.25 mm, and for specimens with concave welds of 0.37 mm. However, in the stress concentration zones and in the crack growth, the size of the element side was 0.03 mm (Rusiński, 2002;Faszynka et al, 2016). Fig.…”

Section: Description Of the Software For Numerical Computationsmentioning

confidence: 99%

Numerical Analysis of Stress Intensity Factor in Specimens with Different Fillet Geometry Subjected to Bending

Lewandowski

Rozumek

2018

Acta Mechanica Et Automatica

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The article presents the maps of xx stress component and compares values of analytical and numerical calculations for the stress intensity factor range of welded specimens with fillet welds which subjected to cyclic bending. The tests were performed under constant value of moment amplitude Ma= 9.20 N·m and stress ratio R = σmin/ σmax= −1. The specimens were made of drag steel rod S355. The specimens were solid and welded. The numerical models were simulated with ABAQUS suite and numerical calculations performed with FRANC3D software.

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“…In many industrial applications these approaches imply difficulties [4][5][6][7][8][9][10][11][12][13][14]. The Lagrangian approach, where the frame of reference evolves with the material, cannot resolve large material deformations due to excessive element distortion [15][16][17]. There are significant difficulties in modeling process of material failure using the FEM and element deletion method, often called element erosion [18].…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigations of the Effect of Process Parameters on Residual Stresses, Strains and Quality of Final Product in Blanking Using SPH Method

Bohdal

Kułakowska

Patyk

et al. 2016

MSF

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The shearing process such as the blanking of sheet metals has been used often to prepare workpieces for subsequent forming operations. This process consists in separating a blank from a sheet by means of a high-localized shear deformation due to the action of a punch. Blanking modelling is becoming an increasingly important tool in gaining understanding and improving this process. At the moment a fundamental problem in numerical modelling of blanking processes is an excessive element distortion in a finite-element simulation. In this study, we present a hybrid modelling approach, SPH (smoothed particle hydrodynamics) coupled FEM method to simulate the blanking process. This new approach involves several advantages compared to the traditional finite element method for example: neglect mesh tangling and distortion problems, does not need to use material separation criterion. The physical, mathematical and computer model of the process is elaborated. The application in ANSYS/LS-DYNA program is developed. The examination and analysis of influence of process technological parameters for example: the clearance, tool geometry, blanking velocity on residual stresses, strains and quality of final product using the SPH method is analyzed. The results of computer simulations can be used to forecasting quality of the parts optimization.

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Numerical Analysis of Stress and Strain in Specimens with Rectangular Cross-Section Subjected to Torsion and Bending with Torsion

Cited by 4 publications

References 10 publications

Fracture surface formation of notched 2017A-T4 aluminium alloy under bending fatigue

Fracture surface formation of notched 2017A-T4 aluminium alloy under bending fatigue

Numerical Analysis of Stress Intensity Factor in Specimens with Different Fillet Geometry Subjected to Bending

Numerical Investigations of the Effect of Process Parameters on Residual Stresses, Strains and Quality of Final Product in Blanking Using SPH Method

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