摘要
通过热压缩物理模拟试验得到7075铝合金的真应力-真应变数据,将其输入到Deform-2D软件中,作为材料模型,选择Cockroft&Latham模型及剪切摩擦模型,设置温度300℃,压下量60%,应变速率为0.01、0.1、1、10 s-1,摩擦系数为0.1、0.2、0.3、0.5、0.7,对试样压缩过程中的最大损伤值进行模拟。模拟分析得到了在一定条件下,7075铝合金热压缩过程中最大损伤值随压下量、摩擦系数及应变速率的变化规律。
The true stress-strain data of 7075 A1 alloy during hot compression physical simulation experiment was obtained. Then inputted to the DEFORM-2D software, as the material model, choosing Cockroft ＆ Latham model and shear friction model, the maximum damage value of the sample was numerical simulated during compression process, at temperatures of 300℃, height press quantity of 60%, strain rates of 0.0 1, 0.1, 1, 10 s-1, and the frictional coefficient of 0.1, 0.2, 0.3, 0.5, 0.7. Through simulation analysis, the law of maximum damage value changing with press quantity, the frictional coefficient and strain rate during hot compression was obtained under certain conditions.
出处
《热加工工艺》
CSCD
北大核心
2012年第8期19-21,共3页
Hot Working Technology
