Abstract:
This research develops and validates a material model for the AM50A magnesium alloy, which is used in the automotive industry. The model was created through a combination of experimental and numerical simulations of standardized Charpy and tensile tests, along with microstructural analysis. The study evaluated three material models: a bilinear approximation, a piecewise linear model, and the Johnson–Cook model. The piecewise linear model was found to have the most accurate predictive capabilities, with variations attributed to microstructural defects. The validated material model was then used to predict the behavior of an AM50A magnesium alloy steering wheel armature under impact, with experimental and numerical impact tests performed to validate the results. A failure criterion was also proposed and assessed during the numerical simulations of the Charpy impact tests.
