应力三轴度对AZ31镁合金断裂应变的影响
Effect of Stress Triaxiality on Fracture Strain of AZ31 Magnesium Alloy
杨汉章 1聂慧慧 2刘群峰 1王文嘉 1任健斌 1梁伟3
作者信息
- 1. 太原理工大学 材料科学与工程学院,山西 太原 030024
- 2. 太原理工大学 机械与运载工程学院,山西 太原 030024
- 3. 太原理工大学 材料科学与工程学院,山西 太原 030024;太原理工大学 分析测试中心,山西 太原 030600
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摘要
采用试验和有限元数值模拟相结合的方法,分析了应力三轴度对AZ31 镁合金断裂应变的影响.对光滑试样和 3 组不同缺口半径的试样以 0.5 mm/min的拉伸速度进行准静态拉伸试验.然后,选取三组试样数据建立了AZ31镁合金在室温下关于应力三轴度对断裂应变影响的模型.将建立的损伤模型代入ABAQUS有限元软件中进行模拟仿真,模拟结果与其余一组试验结果基本一致,验证了该模型的正确性.
Abstract
The effect of stress triaxiality on the fracture strain of AZ31 magnesium alloy was analyzed by the combination of experiment and finite element numerical simulation.Quasi-static tensile tests were performed on smooth samples and three groups of samples with different notch radius at a tensile speed of 0.5 mm/min.Then,three sets of sample data were selected to establish a model of the effect of stress triaxiality on fracture strain of AZ31 magnesium alloy at room temperature.The established damage model was substituted into ABAQUS finite element software for simulation.The simulation results are basically consistent with the rest of the experimental results,which can verify the correctness of the model.
关键词
镁合金/Johnson-Cook断裂损伤模型/应力三轴度/有限元模拟Key words
magnesium/Johnson-Cook fracture damage model/stress triaxiality/finite element simulation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据