Development of Mechanical Cards for Finite Element Analysis of Mild Steels by Parameter Optimization

Material card generation has a significant role for characterizing the mechanical behaviour to estimate accurate deformation in finite element analysis. Regarding this, the most commonly used characterization test for sheet metals is the uniaxial tension test due to its simplicity and well-defined testing standards. The mechanical properties such as ultimate tensile strength can be determined by tensile tests. However, the strain level can reach to a specific value which is low as compared to strain levels reached in cold forming operations. In this paper, the experimental data is optimized with finite element analysis and a good consistency between experimental and simulation results is achieved. Parameter optimization is used as a guiding tool to extend strain levels according to 3 mechanical equations: Swift, Hockett-Sherby, and Combined material model. The user interface is designed with the detailed graphs and optimized parameters with the help of MATLAB tool.