Al-5.8Cu铝合金屈服本构模型  

Yield Constitutive Model of Al-5.8Cu Alloy

作　　者：赵一生[1,2] 张新明[2] 

机构地区：[1]深圳职业技术学院,广东深圳518055 [2]中南大学材料学院,湖南长沙410083

出　　处：《热加工工艺》2012年第4期55-57,共3页Hot Working Technology

摘　　要：利用Cowper-Symonds、Johnson-Cook两个经典本构模型和Mises屈服准则,结合常温和高温条件下Al-5.8Cu铝合金SHPB实验结果,成功建立了应变率ε觶、温度T与Al-5.8Cu铝合金动态屈服应力Yd的多因素Cowper-Symonds-Johnson-Cook屈服本构模型。利用多因素模型预测的Al-5.8Cu铝合金板动态屈服应力与实验所测值非常接近,相对误差最大值4.8%,最小值为-0.1%。The multi-factor yield constitutive equation of Al-5.8Cu aluminum alloy based on Mises criterion and classical constitutive modes including Cowper-Symonds and Johnson-Cook was successfully established by fitting the experimental results obtained by SHPB,which can correlate temperature,strain rate with dynamic yield stress.The results evaluated by ＂multi-factor＂ constitutive equation are closed to the experimental results.The maximum and minimum of relative error are 4.8% and-0.1%,respectively.

关 键 词：Al-5.8Cu铝合金 多因素 屈服本构模型 

分 类 号：TG115[金属学及工艺—物理冶金]