为探究锂电池极片涂布工艺参数与浆料涂层湿厚度之间的定量关系,基于Volume of Fluid(VOF)方法建立了狭缝挤压式涂布外流场的数值计算模型,分析了锂电池浆料微观流动过程及涂布缺陷形成原因,运用Minitab软件设计了三因子两水平的全因子...为探究锂电池极片涂布工艺参数与浆料涂层湿厚度之间的定量关系,基于Volume of Fluid(VOF)方法建立了狭缝挤压式涂布外流场的数值计算模型,分析了锂电池浆料微观流动过程及涂布缺陷形成原因,运用Minitab软件设计了三因子两水平的全因子仿真试验,讨论了基材运动速度、涂布间隙和入口流速对浆料涂层湿厚度的影响规律。仿真结果表明,在一定工艺参数范围内可获得稳定均匀的涂层,否则会产生涂布缺陷,其中基材运动速度和入口流速为涂层湿厚度主要影响因素,建立的数学模型在仿真试验条件下可预测湿涂层的厚度,为锂电池极片涂布工艺参数的优化提供理论支持。展开更多
Based on the status of land ecological resources in Hohhot, 20 indexes covering nature, resource environment, economy and society were selected and the evaluation index system was established. With the principal compo...Based on the status of land ecological resources in Hohhot, 20 indexes covering nature, resource environment, economy and society were selected and the evaluation index system was established. With the principal component analysis, the land ecological security of Hohhot from 2009 to 2015 was analyzed. The results showed that the land ecological security of Hohhot was declining year by year in 2009-2015. Besides, per capital GDP and public green area, the proportion of in- dustry and the price index of agricultural and animal husbandry production materials were the key factors influencing the land ecological security of Hohhot. The key for protection of the land ecological security may lie in the protection of land quality and prevention of land degradation in farming and stock-breeding areas.展开更多
In order to give a new way for modeling driving behavior, identifying road traffic accident causation and solving a variety of road traffic safety problems such as driving errors prevention and driving behavior analys...In order to give a new way for modeling driving behavior, identifying road traffic accident causation and solving a variety of road traffic safety problems such as driving errors prevention and driving behavior analysis, a new driving behavior shaping model is proposed, which could be used to assess the degree of effect of driving error upon road traffic safety. Driver behavior shaping model based on driving reliability and safety analysis could be used to identify the road traffic accident causation, to supply data for driver's behavior training, to evaluate driving procedures, to human factor design of road traffic system.展开更多
文摘为探究锂电池极片涂布工艺参数与浆料涂层湿厚度之间的定量关系,基于Volume of Fluid(VOF)方法建立了狭缝挤压式涂布外流场的数值计算模型,分析了锂电池浆料微观流动过程及涂布缺陷形成原因,运用Minitab软件设计了三因子两水平的全因子仿真试验,讨论了基材运动速度、涂布间隙和入口流速对浆料涂层湿厚度的影响规律。仿真结果表明,在一定工艺参数范围内可获得稳定均匀的涂层,否则会产生涂布缺陷,其中基材运动速度和入口流速为涂层湿厚度主要影响因素,建立的数学模型在仿真试验条件下可预测湿涂层的厚度,为锂电池极片涂布工艺参数的优化提供理论支持。
基金Supported by the Funding Project for the Youth of Education Ministry for the Development of Liberal Arts and Social Sciences(12YJC790058)the Guidance Plan Project for the Natural Science Foundation of Hubei(2013CFC089)the Open-end Fund of Hubei Ecological Culture Research Center,China University of Geosciences(Wuhan)~~
文摘Based on the status of land ecological resources in Hohhot, 20 indexes covering nature, resource environment, economy and society were selected and the evaluation index system was established. With the principal component analysis, the land ecological security of Hohhot from 2009 to 2015 was analyzed. The results showed that the land ecological security of Hohhot was declining year by year in 2009-2015. Besides, per capital GDP and public green area, the proportion of in- dustry and the price index of agricultural and animal husbandry production materials were the key factors influencing the land ecological security of Hohhot. The key for protection of the land ecological security may lie in the protection of land quality and prevention of land degradation in farming and stock-breeding areas.
文摘In order to give a new way for modeling driving behavior, identifying road traffic accident causation and solving a variety of road traffic safety problems such as driving errors prevention and driving behavior analysis, a new driving behavior shaping model is proposed, which could be used to assess the degree of effect of driving error upon road traffic safety. Driver behavior shaping model based on driving reliability and safety analysis could be used to identify the road traffic accident causation, to supply data for driver's behavior training, to evaluate driving procedures, to human factor design of road traffic system.
