为了提高平整轧制力的预报精度,采用有限元法(finite element method,FEM)与人工神经网络(artificial neural network,ANN)相结合的方法,对DP980和CP1180超高强冷轧带钢在平整轧制过程中的轧制力进行预测。通过建立平整轧制过程的数学模...为了提高平整轧制力的预报精度,采用有限元法(finite element method,FEM)与人工神经网络(artificial neural network,ANN)相结合的方法,对DP980和CP1180超高强冷轧带钢在平整轧制过程中的轧制力进行预测。通过建立平整轧制过程的数学模型,利用有限元法设计了不同工况下的数值模拟试验,为神经网络模型生成训练数据。将摩擦因数与轧制力关联进行迭代优化后作为神经网络模型的输入参数。该轧制力预测方法计算迅速,预测误差在10%以内。展开更多
Dense pre-hydrated geosynthetic clay liners(DPH GCLs)were manufactured as innovative materials accompanied by the advantage of lower hydraulic conductivity(k).The k of DPH GCLs permeated with de-ionized water(DIW)was ...Dense pre-hydrated geosynthetic clay liners(DPH GCLs)were manufactured as innovative materials accompanied by the advantage of lower hydraulic conductivity(k).The k of DPH GCLs permeated with de-ionized water(DIW)was 9.8×10^(−12) m/s.The effect of Cu^(2+)synthetic solution on DPH GCLs was discussed.Furthermore,the effect mechanism was studied on the basis of test technologies.A significant adverse impact on hydraulic performance of DPH GCLs is found when the concentration of Cu^(2+)is greater than 1 g/L.SEM,XRD,XRF,FTIR,and XPS analyses show that the effect of Cu^(2+)on DPH GCLs includes two steps.Firstly,Cu^(2+)interacts with hydrophobic organic matter(HOM),and the adhesion of bentonite is destroyed,and some holes appear.The Cu^(2+)contacts with bentonite directly,and Cu^(2+)interacts with bentonite through ion exchange.Passivated phenomenon occurs on the surface of the bentonite,and swelling ability of bentonite is reduced,which causes permeable DPH GCLs.展开更多
文摘为了提高平整轧制力的预报精度,采用有限元法(finite element method,FEM)与人工神经网络(artificial neural network,ANN)相结合的方法,对DP980和CP1180超高强冷轧带钢在平整轧制过程中的轧制力进行预测。通过建立平整轧制过程的数学模型,利用有限元法设计了不同工况下的数值模拟试验,为神经网络模型生成训练数据。将摩擦因数与轧制力关联进行迭代优化后作为神经网络模型的输入参数。该轧制力预测方法计算迅速,预测误差在10%以内。
基金National Key Research and Development Project of China(No.2017FB0310902)。
文摘Dense pre-hydrated geosynthetic clay liners(DPH GCLs)were manufactured as innovative materials accompanied by the advantage of lower hydraulic conductivity(k).The k of DPH GCLs permeated with de-ionized water(DIW)was 9.8×10^(−12) m/s.The effect of Cu^(2+)synthetic solution on DPH GCLs was discussed.Furthermore,the effect mechanism was studied on the basis of test technologies.A significant adverse impact on hydraulic performance of DPH GCLs is found when the concentration of Cu^(2+)is greater than 1 g/L.SEM,XRD,XRF,FTIR,and XPS analyses show that the effect of Cu^(2+)on DPH GCLs includes two steps.Firstly,Cu^(2+)interacts with hydrophobic organic matter(HOM),and the adhesion of bentonite is destroyed,and some holes appear.The Cu^(2+)contacts with bentonite directly,and Cu^(2+)interacts with bentonite through ion exchange.Passivated phenomenon occurs on the surface of the bentonite,and swelling ability of bentonite is reduced,which causes permeable DPH GCLs.
