3D Multi-physics field simulation of electromagnetic tube forming

Cui, Xiaohui; Mo, Jinhan; Han, Fei

doi:10.1007/s00170-011-3540-y

Cited by 32 publications

(19 citation statements)

References 13 publications

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“…Parameters compared with the simulation results in literature [4] and experimental data in literature [9]. Besides, the deformation of tube was analyzed which provided a basic for the proposing of evaluating criterion on homogeneity of deformation.…”

Section: Methodsmentioning

confidence: 99%

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Study on the homogeneity of deformation under electromagnetic expansion of metal tube

Fang

Zhu

et al. 2013

JAE

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In this paper, a 3D numerical simulation method was put forward by coupling magnetic-structural fields, and its reliability was verified through comparing with the experimental data offered by Suzuki. According to the characteristics of electromagnetic expansion of metal tube, this simulation method was used to analyze the uniformity of tube expansion when the length of tube was less than that of the coil. Meanwhile, a curve of homogeneity of electromagnetic tube expansion with different aspect ratios (ratio of length to diameter) of tube was given based on the criterion of uniformity on deformation at the condition of specific parameters presented in this paper. By analyzing the mechanical characteristics of tube expansion, a length range of tube was found where the tube deformed uniformly. The results derived from this paper provided a good guidance for optimization design of electromagnetic ring expansion experiments which will be conducted on and this could ultimately promote the application of electromagnetic forming.

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Section: Methodsmentioning

confidence: 99%

“…Cui et al [4] carried out the 3D simulation of free tube bulging based on the ANSYS/EMAG and ANSYS/LS-DYNA software, using Arbitrary Lagrangian Algorithm to avoid the big distortion of air elements around the tube. As a result, a good magnetic-structural field iterative coupling analysis was achieved.…”

Section: Introductionmentioning

confidence: 99%

Study on the homogeneity of deformation under electromagnetic expansion of metal tube

Fang

Zhu

et al. 2013

JAE

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“…Compared to the other numerical models [5]- [11], this model gives full consideration to the multiphysic coupled process. However, the contact and collision between the workpiece and die are not considered in this model.…”

Section: B Fe Model Of Emf Systemmentioning

confidence: 99%

“…However, the EMF is a complex process which involves the coupling of circuit, magnetic field, deformation field and thermal field, thus it is difficult to predict the dynamic behavior in the forming process by experience, and limits its application. To investigate the dynamic behavior of metal workpiece, numerous numerical methods have been performed for the EMF process by using developed codes or commercial finite element codes [5]- [11]. However, there Manuscript have been relatively few researches conducted on experimental studies.…”

Section: Introductionmentioning

confidence: 99%

The Electromagnetic Flanging of a Large-Scale Sheet Workpiece

Lai

Han

Cao

et al. 2014

IEEE Trans. Appl. Supercond.

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In this paper, an electromagnetic forming (EMF) system with an energy of 200 kJ (25 kV, 640 μF) was designed and fabricated to flange a large-scale aluminum alloy sheet with bore, whose outer diameter, bore diameter, and sheet thickness are 640 mm, 180 mm, and 5 mm, respectively. The stress distribution of the midplane of the coil was calculated to check the coil structural strength. And a multiphysics coupled finite element model, which involves the coupling of circuit, electromagnetic field, deformation field, and thermal field, was built to assess the forming capacity of the EMF system. Furthermore, the experimental results of electromagnetic flanging in the case of 155 kJ are presented and compared with the numerical results. Both the simulation forming depth 87 mm and experiment forming depth 90 mm show that the EMF system is effective to form the large-scale sheet workpiece.Index Terms-Electromagnetic forming (EMF), finite element method, forming capacity, large-scale sheet, multiphysics.

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“…The microstructures, texture and mechanical properties of the bulged Al alloy were investigated using transmission electron microscopy (TEM), electron backscattered diffraction (EBSD) and uniaxial tensile testing. The reason for choosing the Al alloy tube is that homogeneous deformation could be achieved in the entire tube by electromagnetic bulging [14,15], thus allowing ease of mechanical testing of the post-bulged workpiece. The results showed that the bulged samples exhibits dense dislocation bands and dislocation walls owing to the high-speed deformation of EMF and solute-dislocation interactions in the Al alloy.…”

Section: Introductionmentioning

confidence: 99%