|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Material Behavior Characterization via Multi-Directional Deformation of Sheet Metal
||Optimization of Biaxial Tensile Test Specimen Design
||Dilip Kumar Banerjee, Mark Iadicola, Adam Creuziger, Timothy Foecke
|On-Site Speaker (Planned)
||Dilip Kumar Banerjee
Biaxial testing is becoming prevalent in the sheet metal forming industry for determining mechanical properties of sheet material. One main reason behind this is that the sheet metal is largely anisotropic and traditional stress-strain data from uniaxial tests may not be applicable to multi-directional forming process. An important issue for successful biaxial testing is the specimen design itself. Typically a cross-shaped specimen (“cruciform”) is used for biaxial tests. Over the years, a large number of specimen designs have been used. Although various cruciform specimen types have been investigated, no standard geometry exists.
Finite element (FE) models are developed to simulate cruciform biaxial tensile tests based on selection of an initial specimen design. FE models are verified by comparing simulated displacement and strain data with experimental results. Subsequently, calibrated FE model is used to obtain an optimum shape of the specimen by proper selection of design variables and objective function.
||Planned: A print-only volume