Finite Element Method on Electromagnetic Shaping for Aluminum Alloy Sheet Parts

2012 ◽  
Vol 509 ◽  
pp. 266-272 ◽  
Author(s):  
Jian Hua Hu ◽  
Xue Chao Du ◽  
Xue Mei Song ◽  
Heng Cai
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Aluminum Alloy ◽  
Alloy Sheet ◽  
Uniform Pressure ◽  
Discharge Energy ◽  
Uniform Pressure Coil ◽  
Large Discharge ◽  
Electromagnetic Shaping ◽  
Element Method

In this paper, the distribution of magnetic forces of uniform pressure coil and the electromagnetic shaping with die of aluminum alloy 1060 surface parts will be researched using the finite element method. The results show that: Uniform pressure coil can produce a uniform magnetic pressure on the sheet; The springback after electromagnetic aimed stamping is smaller than the springback after normal stamping; Before achieving the best results, with the discharge energy increases, springback will be smaller; with greater punch and die clearance, greater energy will be needed to achieve the best effect; Too large discharge energy will lead sheet bounce after punch, springback increases.

Numerical Biaxial Tensile and Tension-Compression Tests of Aluminum Alloy Sheet Using Crystal Plasticity Finite Element Method

2018 ◽  
Vol 920 ◽  
pp. 187-192
Author(s):  
Akinori Yamanaka ◽  
Natsuki Nemoto ◽  
Toshihiko Kuwabara
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Aluminum Alloy ◽  
Crystal Plasticity ◽  
Alloy Sheet ◽  
Aluminum Alloy Sheet ◽  
Compression Tests ◽  
Crystal Plasticity Finite Element ◽  
Biaxial Tensile ◽  
Element Method

This paper presents the results of the numerical multi-axial material tests for predicting elastoplastic deformation behavior of aluminum alloy sheets under equi-biaxial tension and in-plane tension-compression stress states. In this study, we have performed the numerical biaxial tensile and tension-compression tests of a 5000-series aluminum alloy sheet using the crystal plasticity finite element method based on the mathematical homogenization method which has been developed by the previous studies. We found that the true stress-logarithmic plastic strain (SS) curves calculated by the numerical biaxial tensile test slightly deviate from those measured by the biaxial tensile tests using a cruciform specimen. On the other hand, the results of the numerical tension-compression test demonstrated that the predicted SS curves shows a reasonable agreement with those obtained by the experiment using the biaxial stress-testing machine with comb-shaped dies.

Die Parameters Optimized for Drawing of AZ31 Magnesium Alloy Sheet by Finite Element Method

2011 ◽  
Vol 480-481 ◽  
pp. 634-638
Author(s):  
Shao Feng Zeng ◽  
Wen Zhe Chen
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Magnesium Alloy ◽  
Maximum Principal Stress ◽  
Alloy Sheet ◽  
Diameter Ratio ◽  
Az31 Magnesium Alloy Sheet ◽  
Az31 Sheet ◽  
Simulation Results ◽  
Element Method

In this study AZ31 sheet with a thickness of 1.2mm and diameter of 52mm was simulated to press into a dish by a finite element method(FEM) software, which to obtain better processing of plastics forming of magnesium alloy by varying die parameters. In order to find the way of development on drawing property and to formulate the rational stamping processing, simulations have been applied on the maximum principal stress various with round radius of dent die and round radius of punch and die gap. Simulation results show that: to obtain a dish of 29mm diameter, a sheet of AZ31 magnesium with a thickness of 1.2mm and diameter of 52mm has been drawn, the fracture occurring at the corner of dish wall bottom. the ability of drawing varies with the round radius of dent die, which better radius is 3.8 mm. In the same way better round radius of punch is 3.0 mm, while better half gap is 1.8mm. Experiments also show that high diameter ratio has been increased with the various of die parameters and forming ability of material has been developed. It is reliable of simulation of finite element method.

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