Malzeme Modellerinin Sac Metal Sonlu Elemanlar Analizi Tahmin Performansına Etkisinin Değerlendirilmesi

Gürsoy, Özlem Köleoğlu; Esener, Emre

doi:10.35193/bseufbd.549657

Cited by 4 publications

(1 citation statement)

References 29 publications

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“…Esener and Gürsoy performed analyses with four different material models: isotropic material-admitting isotropic strain-hardening (Power Law), anisotropic material-admitting isotropic strain-hardening Hill-48, Barlat-89 and anisotropic material-admitting kinematic strain-hardening; by modelling deep drawing, square box drawing and V-bending dies with materials DP600, DP980, DC05 and AA5754 in order to measure sensitivities of material models in nite element analyses. As a result of the analyses conducted, more appropriate results were obtained with the kinematic strain-hardening material model, compared to other material models and it was seen that more parameters are needed in kinematic strain-hardening material model [21].…”

Section: Introductionmentioning

confidence: 99%

Finite Element Analysis of Springback of High-Strength Metal SCGA1180DUB While U-Channeling, According to Wall Angle and Die Radius

Karabulut

Esen

2021

Preprint

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Springback is a problem as important as tearing or thinning, while forming high-strength sheets. Springback is an undesirable situation and it is the form difference between the desired form of a part in theory and the form obtained due to mechanical characteristics and process inputs of the material after die forming. It affects operations in shearing, punching or bending dies in subsequent operations in forming die sets. If the part is not within the desired tolerance range, it creates problems during assembly. In order for cost effective production plans for automotive parts to be made, suitable sheet forming simulations are needed. Waste of time and failures during die construction are minimized by defining accurate parameters by finite element analyses and minimizing periods of trial-and-error. In this study, the material SCGA1180DUB in sheet thickness of 0.8 mm from multi-phase steel sheet group was U-channeled, using Autoform sheet forming analysis program, according to appropriate process conditions having wall angles of 7°,10°,12° and die radius values of R3, R5, R8 and the springback values were estimated. The results obtained were compared through the finite element program and suitable wall angle and die radius values for the material SCGA1180DUB for forming advanced high-strength sheets were determined. As the die radii increased at the same wall angles, the amount of spring back increased significantly. In particular, due to high yield and tensile strength of multi-phase high strength sheet, springback values were observed to be high. Negative springbacks were observed in the roof of the part. In the same die radii, under the same process conditions, as wall angles increase, springback values decreased. In the literature, it is interesting that there are few studies regarding forming, springback of high-strength sheets SCGA1180DUB. This study will contribute to the literature. Autoform program was used for Finite Element Analysis.

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Section: Introductionmentioning

confidence: 99%

Finite Element Analysis of Springback of High-Strength Metal SCGA1180DUB While U-Channeling, According to Wall Angle and Die Radius

Karabulut

Esen

2021

Preprint

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Evaluation of Plasticity Models Using Uniaxial Tensile Test

Ünlü

Esener

Fırat

2020

European Mechanical Science

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In this study, it is aimed to evaluate plasticity model prediction performance for plastic behavior of materials using a uniaxial tensile test. For this purpose, von Mises, Hill-48, Hill-93, Barlat-89 and Hu-2003 plasticity models are studied, and DC04, DP780, 6000 series aluminum alloy are used as materials. Tensile tests are performed with three directions (rolling, diagonal, transverse), and mechanical properties of materials are obtained. In addition, anisotropy coefficients of materials are calculated by uniaxial tensile tests. Validation of plasticity models is performed using obtained material parameters. Yield locus and yield stresses-anisotropy coefficients depends on directions are used in evaluation of plasticity models. As a result of this study, Hu-2003 showed the best modeling performance for all materials.

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Comparison of experimental and numerical analysis of Quasi-Static punch shear test for stainless steel sheet material

Şahbaz

2022

Turkish Journal of Engineering

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In this study, Quasi-Static Punch Shear Test (QS-PST) for AISI-304 stainless steel sheet material with 0.5 mm thickness was performed experimentally and numerically, then the results were compared. QS-PST was designed non-standard according to the need and is especially used to determine the puncture resistance of composite plate materials against lowspeed loading. Since the results obtained from QS-PST are similar to those from ballistic tests, this has attracted the attention of researchers. The experimental study was carried out by integrating the die and punch which were specially produced for this test, into an electromechanical tensile-compression test device with a capacity of 100 kN. In order to define the material properties correctly in numerical analysis, the tensile tests of the relevant material were also carried out with the same device. Then, the CAD model of the experimental system was generated and Finite Element Analysis (FEA) was performed. In FEA, the mesh structure was determined as tetrahedral, since it gave closer results in such tests and the analyzes were performed by increasing the number of mesh from 16700 to 151800 elements. Finally, the experimentally and numerically obtained results were compared and it was observed that the result were very close depending on increasing the number of mesh.

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Malzeme Modellerinin Sac Metal Sonlu Elemanlar Analizi Tahmin Performansına Etkisinin Değerlendirilmesi

Cited by 4 publications

References 29 publications

Finite Element Analysis of Springback of High-Strength Metal SCGA1180DUB While U-Channeling, According to Wall Angle and Die Radius

Finite Element Analysis of Springback of High-Strength Metal SCGA1180DUB While U-Channeling, According to Wall Angle and Die Radius

Evaluation of Plasticity Models Using Uniaxial Tensile Test

Comparison of experimental and numerical analysis of Quasi-Static punch shear test for stainless steel sheet material

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