Abstract In this study, plasticity and ductile fracture properties were characterized by performing various tension, shear, and compression tests. A series of 10 experiments were performed using notched round bars, flat-grooved plates, in-plane shear plates, and cylindrical bars. Two cast aluminum alloys used in automotive suspension systems were selected. Plasticity modeling was performed and the results were compared with experimental and corresponding simulation results; further, the relationships among the stress triaxiality, Lode angle parameter, and equivalent plastic strain at the onset of failure were determined to calibrate a ductile fracture model. The proposed ductile fracture model shows good agreement with experimental results.

中文翻译：

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铸铝合金零件的金属塑性和韧性断裂建模

摘要 在这项研究中，通过进行各种拉伸、剪切和压缩试验来表征塑性和韧性断裂性能。使用带缺口的圆棒、平槽板、面内剪切板和圆柱棒进行了一系列 10 次实验。选择了两种用于汽车悬架系统的铸造铝合金。进行塑性建模，并将结果与​​实验和相应的模拟结果进行比较；此外，确定了应力三轴性、洛德角参数和失效开始时的等效塑性应变之间的关系，以校准韧性断裂模型。提出的韧性断裂模型与实验结果吻合良好。