scholarly journals 315 Two Stage Rolling Process Analyses of High Formability Aluminum Alloy Sheet Metal by Using Multi-scale Finite Element Method

2010 ◽  
Vol 2010.85 (0) ◽  
pp. _3-21_
Author(s):  
Rong ZOU ◽  
Tomiso OHATA ◽  
Yasunori NAKAMURA ◽  
Hiroyuki KURAMAE ◽  
Hideo MORIMOTO ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Aluminum Alloy ◽  
Sheet Metal ◽  
Rolling Process ◽  
Alloy Sheet ◽  
Aluminum Alloy Sheet ◽  
Two Stage ◽  
Multi Scale ◽  
Element Method

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.

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.

scholarly journals A posteriori error estimates for a multi-scale finite-element method

2021 ◽  
Vol 40 (4) ◽  
Author(s):  
Khallih Ahmed Blal ◽  
Brahim Allam ◽  
Zoubida Mghazli
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
A Posteriori Error Estimates ◽  
Numerical Test ◽  
Posteriori Error ◽  
Diffusion Problem ◽  
A Posteriori ◽  
Essential Information ◽  
Multi Scale ◽  
Element Method

AbstractWe are interested in the discretization of a diffusion problem with highly oscillating coefficient, by a multi-scale finite-element method (MsFEM). The objective of this method is to capture the multi-scale structure of the solution via local basis functions which contain the essential information on small scales. In this paper, we perform an a posteriori analysis of this discretization. The main result consists of building error indicators with respect to both small and large meshes used in this method. We present a numerical test in which the experiments are in good coherency with the results of analysis.

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