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Meeting 2016 TMS Annual Meeting & Exhibition
Symposium Material Behavior Characterization via Multi-Directional Deformation of Sheet Metal
Presentation Title Determination of Bending Limit Curves for Aluminium Alloy AA6014-T4: An Experimental Approach
Author(s) Ipsita Madhumita Das, Krishna Kumar Saxena, Jyoti Mukhopadhyay
On-Site Speaker (Planned) Ipsita Madhumita Das
Abstract Scope The conventional forming limit curves as proposed by Keeler and Goodwin fail to predict true formability in case of bending and hemming operations. This is due to the different failure mechanisms involved in biaxial forming and bending/hemming operations. To overcome this difficulty, concept of bending limit curve has been introduced. This work presents an experimental approach to determine the BLC for aluminium alloy AA6014-T4. AA6014-T4 was selected as the workpiece due to its extensive application in outer panels of car bodies. The bending samples were printed with speckle pattern and measurement of bending strains was carried out with the help of GOM Aramis software. The three point bend test were conducted with two punch radii of 0.4 mm and 2 mm to study the effect of punch radius on bending limit strains. The complete formability picture was obtained by plotting combined forming limit and bending limit curves.
Proceedings Inclusion? Planned: A print-only volume


A Novel In-situ Planar Biaxial Experiment
Advanced Cruciform Testing at the NIST Center for Automotive Lightweighting
An Experimental and Microstructural Investigation of Biaxial Bauschinger Effects in Sheet Metals
An Experimentally Validated, Microstructure Based Model for Forming of Low-symmetry Alpha-uranium
Biaxial Loading of Anisotropic Al-6022-T4 Sheets Using Cruciform Specimens
Determination of Bending Limit Curves for Aluminium Alloy AA6014-T4: An Experimental Approach
Dilational Response of Voided Polycrystals
Effect of Complex Strain Paths on Microstructure Evolution Studied by In-situ Neutron Diffraction
Evalution of Formability in Aluminum Alloys across Strain Rates Using Digital Image Correlation Technique
Hardening Behavior of 316L SS Subject to Biaxial Strain Path Change: Multiscale Modeling for Guiding Experiments
Inflation of Stainless Steel 304L Microtubes under Axial Tension and Internal Pressure to Assess the Plastic Anisotropy
Modeling Anisotropic Hardening and Nonlinear Elasticity under Loading Path Change
Multi-scale Analysis of Springback in Microforming of Thin Nickel Sheets
On the Non-proportional Deformation of Sheet Steel Using In-situ Diffraction and Modelling Methods
Onset of Plasticity via Relaxation Analysis (OPRA)
Optimization of Biaxial Tensile Test Specimen Design
Predicting Cyclic Deformation of AA6022-T4 and DP590 Using Polycrystal Plasticity
Sensitivity Analysis of the Bauschinger Behavior on Bending Springback for Prestrained Sheets
The Influence of Deformation Mechanisms on Forming of Commercially Pure Titanium Sheets

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