材料科学
剪切(地质)
结构工程
合金
断裂(地质)
三点弯曲试验
弯曲
单轴张力
复合材料
流离失所(心理学)
极限抗拉强度
工程类
心理学
心理治疗师
作者
Zhiqiang Zhang,Yang Cui,Ge Yu
标识
DOI:10.1007/s12206-021-0234-8
摘要
Failure simulation of 7075-T6 Al alloy is very important due to its relatively low ductility compared to conventional steel. A hybrid numerical-experimental method was developed to determine plastic strains at fracture as a function of triaxiality. The uniaxial tension tests were performed by using the specimens including pure shear, 45° shear, smooth, R5 notch and R15 notch. The fracture locus was established by calibrating the parameters of the Hosford-Coulomb fracture model and was implemented into the GISSMO damage model. The results showed that the predicted force-displacement data were in good agreement with the experimental results. The results of the mesh dependence showed that the mesh size in the range of 0.5–5 mm did not have much influence on the damage results. To assess the accuracy of the damage model, three-point bending tests of the anti-collision beam were performed. The calibrated GISSMO damage model could accurately predict the load-displacement data.
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