The mechanical properties of magnesium alloys make it one of the main materials for vehicle light-weight.Tensile and shearing mechanical properties tests were carried out on magnesium alloy AM60.The mechanical properties at different strain rates and different stress states were obtained.The LS-DYNA finite element simulation and experimental results were compared to obtain the relationship between the stress triax-iality and the equivalent plastic strain of the failure element under different stress states,so as to determine the GISSMO fracture model parameters of the magnesium alloy AM60.Finally,based on the MAT24/GISS-MO material parameters after calibration,the finite element simulation and experiment were compared.The validity of the model for predicting fracture failure under different stress states is verified.
关键词
镁合金AM60/GISSMO失效模型/有限元仿真/汽车轻量化
Key words
magnesium alloy AM60/GISSMO fracture model/finite element simulation/automobile lightweight
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