3-dimensional numerical modelling of rolling of superconducting Ag/BSCCO tape

Eriksen, Morten; Bech, Jakob Ilsted; Seifi, B.; Bay, Niels

doi:10.1109/77.919881

Cited by 5 publications

(6 citation statements)

References 9 publications

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“…The material properties were extracted from the refs. [10,11], and the BSCCO powder density was obtained as 3.94 g/cm 3 by experimental operation.…”

Section: Numerical Simulationmentioning

confidence: 99%

Investigation on drawing process of Bi-2223/Ag wires using racetrack-type dies: Simulation and experiments

Zhang

Lei

et al. 2009

Sci. China Ser. E-Technol. Sci.

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The traditional rolling process of Bi-2223/Ag wires with circular sections is an inhomogeneous process. For the purpose of achieving a uniform filaments distribution, a novel technique for round wire through racetrack-type dies during the last several passes of drawing is necessarily brought forward. In order to investigate the processing behaviors of superconducting filaments, a numerical model for the three passes of racetrack drawing was constructed, and subsequently, the optimization of three racetrack-type dies was designed based on the simulation results. Then the three passes of racetrack drawing was applied to fabricate Bi-2223/Ag tape and the density distribution of each filament of the wire was studied by Vickers microhardness. The experimental results showed that the racetrack drawing can obtain dense superconducting filaments, and improve the mechanical properties and critical current of the final tape.racetrack-type die, Bi-2223/Ag, modelling

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“…The material properties were extracted from the refs. [10,11], and the BSCCO powder density was obtained as 3.94 g/cm 3 by experimental operation.…”

Section: Numerical Simulationmentioning

confidence: 99%

Investigation on drawing process of Bi-2223/Ag wires using racetrack-type dies: Simulation and experiments

Zhang

Lei

et al. 2009

Sci. China Ser. E-Technol. Sci.

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“…3D finite element modelling of flat rolling round wires has been carried out with the FEM program ELFEN investigating the influence of the roll diameter on the flow and density distribution [18]. It has been shown that the diameter has a large influence on the flow.…”

Section: D Fe Analysis Of Flat Rolling Round Multi-filament Wirementioning

confidence: 99%

Mechanical processing of Ag/BSCCO high temperature superconductor tape

Bay

Nielsen

2004

Journal of Materials Processing Technology

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“…Several efforts had been made in modeling the Bi-2212 powder deformation [26,27], which has mechanical behavior close to soil. The models used to describe the behavior of powders could be divided into micro models based on discrete element considering the particles interaction [28][29][30][31], and macro models regarding powder aggregates as an equivalent continuous material [32,33].…”

Section: Introductionmentioning

confidence: 99%

Density dependent constitutive model for Bi-2212 powder compression deformation

Liu,

Gao,

et al. 2024

Phys. Scr.

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Bi-2212 HTS materials are fabricated into multi-filamentary wires via powder-in-tube (PIT) method followed by proper heat treatment to obtain superconductivity, but how to predict the large compression deformation behaviors of the Bi-2212 powder is critical to design the processing of the Bi-2212 HTS wire. Drucker Prager/Cap (DPC) model was the most commonly used model for powders including Bi-2212 with soil-like mechanical behavior to consider its shear failure as well as hydrostatic compression. However, the parameters for DPC Cap evolve with densities change and the original model is inadequate to precisely describe the densification process of Bi-2212 powder with large strain. In this study, the modified DPC model with density dependent parameters was introduced for Bi-2212 powder compressions by measuring the failure strength and hydrostatic compressive behavior under different density states. The DPC yield surface was plotted with an evolution trend of non-linear outward expansion with density increased. FEM model of uniaxial compression based on the as-introduced model was built with subroutine VUSDFLD applied. The distribution of Mises stress and relative density were analyzed. The axial stress-density curve for FEM and experimental results were normalized and quantitively evaluated by Mean Square Error (MSE). The introduced model shows good convergence and could match the experimental results well with normalized MSE of 0.000207 and Root Mean Square Error (RMSE) of 0.0144, indicating the mean error percentage of 1.44 %. The model introduced in this article provides supports toward large strain deformation simulation of Bi-2212 powder.

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3-dimensional numerical modelling of rolling of superconducting Ag/BSCCO tape

Cited by 5 publications

References 9 publications

Investigation on drawing process of Bi-2223/Ag wires using racetrack-type dies: Simulation and experiments

Investigation on drawing process of Bi-2223/Ag wires using racetrack-type dies: Simulation and experiments

Mechanical processing of Ag/BSCCO high temperature superconductor tape

Density dependent constitutive model for Bi-2212 powder compression deformation

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