Numerical Simulation of Springback in Stretch Forming with Two Different Grippers

Xue Chen; Pei Hua Liu; Ming Zhe Li

doi:10.4028/www.scientific.net/AMR.602-604.1860

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Numerical and Experimental Investigation into the Aluminum Alloy Irregular Box Sheet Hydroforming Process
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Fabrication of Aluminum Clad Copper Tube by Planet Schràge Walzwerk Process
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Numerical Simulation of Springback in Stretch Forming with Two Different Grippers
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Optimization Design of Forging Die for Supporting Bar Based on DEFORM-3D
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Phase Field Simulation of Solidified Multiple Grains
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Simulation Study and Optimization of Process Parameters in Precision Forming of the Nut Plate
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Numerical Simulation of Springback in Stretch Forming with Two Different Grippers

Abstract:

The springback of spherical parts in both integral-gripper and discrete-gripper stretch forming processes were investigated by using explicit-implicit algorithm. The effect on springback value and shape errors of pre-stretching, thickness and materials were studied. The simulation results show that springback and shape errors in the integral-gripper stretch forming are bigger than that in the discrete-gripper stretch forming; the springback gradually decrease and shape errors reduce as pre-strecthing increases, a prior pre-stretching is 1%; the springback and shape errors are gradually reduced as sheet metal gets thicker; the greater the elastic modulus and yield strength of the material, the smaller the springback and shape errors of the formed parts.