Large-scale sheet deformation process by electromagnetic incremental forming combined with stretch forming

Cui, Xiaohui; Mo, Jinhan; Li, Jianjun; Xiao, Xiaoting; Zhou, Bo; Fang, Jiakun

doi:10.1016/j.jmatprotec.2016.06.004

Cited by 48 publications

(14 citation statements)

References 14 publications

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“…To consider the effect of a high strain rate on the forming process, the behavior of viscoplastic material was modeled with a rate-dependence law (Cowper-Symonds power law) in ABAQUS finite-element analysis software. Cui et al [17] produced large-scale ellipsoid parts using electromagnetic incremental forming combined with stretch forming. The Cowper-Symonds power law was used to accurately predict the high-speed forming process with multi-steps of coil discharge and stretching.…”

Section: Electromagnetic Field Modelmentioning

confidence: 99%

Springback Calibration of a U-Shaped Electromagnetic Impulse Forming Process

Cui

Zhang

et al. 2019

Metals

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A three-dimensional (3D) finite-element model (FEM), including quasi-static stamping, sequential coupling for electromagnetic forming (EMF) and springback, was established to analyze the springback calibration by electromagnetic force. Results show that the tangential stress at the sheet bending region is reduced, and even the direction of tangential stress at the bending region is changed after EMF. The springback can be significantly reduced with a higher discharge voltage. The simulation results are in good agreement with the experiment results, and the simulation method has a high accuracy in predicting the springback of quasi-static stamping and electromagnetic forming.

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Section: Electromagnetic Field Modelmentioning

confidence: 99%

Springback Calibration of a U-Shaped Electromagnetic Impulse Forming Process

Cui

Zhang

et al. 2019

Metals

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“…For both methods, solid elements have been used to predict the EMF process due to the volume forces generated on the workpiece caused by skin effects. For example, Cui et al [8] accuracy predicted the large-scale ellipsoid parts deformation process by incremental EMF combined with stretch forming. In another study, Cui et al [9] used simulations to obtain a uniform tube thickness stress distribution by applying multi-directional magnetic pressure combined with axial and radial magnetic forces on the tube.…”

Section: Introductionmentioning

confidence: 99%

Springback Reduction of L-Shaped Part Using Magnetic Pulse Forming

Cui

Xiao

et al. 2020

Metals

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This study proposes an electromagnetic-assisted stamping (EMAS) method with magnetic-force loading at the sheet end in order to control the springback phenomenon. The new method does not change the structure of the mold and does not generate a magnetic force at the sheet corner compared to traditional EMAS. Thus, the new approach could greatly extend the mold lifespan and could be readily adopted in commercial production environments. The effects of technological parameters, such as the distance between the blank holder and die, discharge voltage, and sheet thickness on the springback phenomenon were analyzed. Our results suggest that tangential stress and elastic strain energy both decrease with the increase of discharge voltage. The simulation method accurately predicted the deformation of the sheet during the quasi-static stamping and dynamic magnetic forming processes. The simulation and experimental results both show that as the discharge voltage increases, the bent angle after springback decreases.

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“…Furthermore, few researchers have attempted a hybrid forming [24][25][26][27][28] by combining superplastic, laser, electromagnetic, ultrasonic and friction stir incremental forming to improve the formability. Rubber pad forming is used for fabricating the components for aircraft industry due to the advantage that the parts with different dimen-sions and shape can be made using the same flexible rubber pad [29].…”

Section: Introductionmentioning

confidence: 99%

Investigation on component wall angle in single stage incremental forming of austenitic stainless steel AISI 304 sheet

Kumar¹,

Ethiraj²,

Sivabalan³

et al. 2020

FME Transactions

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The aim of this research work is to study the effect of process parameters in achieving the maximum possible wall angle of the component in single stage incremental forming. Austenitic stainless steel AISI 304 is used as a sheet material. The constant tool rotational speed of 250 rpm, tool feed of 1000 mm/min and incremental depth of 0.5 mm were used as process parameters and the wall angle was varied from 60 o .Grid marking technique is used for strain measurements. From the results, it is observed that the maximum height of 45 mm was formed successfully at wall angles 60 o , 61 o , 63 o and 64 o without any defects within the experimented process parameters. Further increase in either the wall angle or the process parameters produced fractured component at a height of around 22 mm itself.

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Large-scale sheet deformation process by electromagnetic incremental forming combined with stretch forming

Cited by 48 publications

References 14 publications

Springback Calibration of a U-Shaped Electromagnetic Impulse Forming Process

Springback Calibration of a U-Shaped Electromagnetic Impulse Forming Process

Springback Reduction of L-Shaped Part Using Magnetic Pulse Forming

Investigation on component wall angle in single stage incremental forming of austenitic stainless steel AISI 304 sheet

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