Forming limit prediction of 5182-O aluminum alloy sheet using finite element analysis

2016 ◽  
pp. 115-117
Author(s):  
R Kurihara ◽  
S Nishida ◽  
H Kamiyama ◽  
R Okushima
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Aluminum Alloy ◽  
Alloy Sheet ◽  
Forming Limit ◽  
Aluminum Alloy Sheet ◽  
Element Analysis

Prediction of Forming Limit Diagrams for Aluminum Alloy Sheet Using Finite Element Analysis

2006 ◽  
Author(s):  
Bing Li ◽  
Tim J. Nye
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Aluminum Alloy ◽  
Sheet Thickness ◽  
Alloy Sheet ◽  
Forming Limit ◽  
Aluminum Alloy Sheet ◽  
Element Analysis ◽  
Anisotropic Parameter ◽  
Forming Limit Diagrams

Prediction of forming limit diagram (FLD) for aluminum alloy sheet using finite element analysis without implementing pre-defined geometrical imperfections or material imperfections was studied. The limit strains of the FLD were determined by applying a new proposed localization criterion in the dome stretching test. The elements just outside the necking area, where their major and minor principal strains have no simultaneous change after localized necking happens, were chosen as the reference elements for measurement of limit strains. Simulations were carried out for various strain paths ranging from balanced biaxial stretching to uniaxial stretching. The effects of material properties, sheet thickness, anisotropic parameter and friction coefficient at the sheet punch interface on the locus of FLD were investigated. It was found that the material yield stress and average anisotropic parameter value has almost no effect on forming limits; larger strain-hardening exponent and higher sheet thickness result in higher level of forming limit strains; the friction coefficient has little influence on the locus of FLD but does affect the strain path taken during the deformation. The predicted FLD of AA 5182-O was compared with an experimentally determined FLD and very good agreement has been achieved. It was demonstrated that forming limit diagrams can be predicted by the finite element method without requiring any assumed geometric or material imperfections in the numerical model.

Forging Process Analysis of 6061 Aluminum Alloy Motorcycle Brake Parts

2021 ◽  
Vol 901 ◽  
pp. 176-181
Author(s):  
Tung Sheng Yang ◽  
Chieh Chang ◽  
Ting Fu Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Aluminum Alloy ◽  
Metal Forming ◽  
Process Analysis ◽  
Surface Hardness ◽  
Dimensional Accuracy ◽  
Die Design ◽  
Element Analysis ◽  
Forging Process

This paper used finite element analysis of metal forming to study the forging process and die design of aluminum alloy brake parts. According to the process parameters and die design, the brake parts were forged by experiment. First, the die design is based on the product size and considering parting line, draft angle, forging tolerance, shrinkage and scrap. Secondly, the finite element analysis of metal forming is used to simulate the forging process of aluminum alloy brake parts. Finally, the aluminum alloy brake levers with dimensional accuracy and surface hardness were forged.

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