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In this paper, the dynamic compressing experiments for the matrix material of the tungsten alloys which have been three different deforming(0%、 32.6%、 44.6%) processed have been performed by the experimental technology of separated Hopkinson pressure bar and many accurate datum have been obtained. Also the three materials have been compared with each other and analyzed. The results show that the optimized values are in a certain range to optimize the materials by changing their deforming technology. The parameters of constitutive model of Johnson-Cook have been fitted based on the datum. Then proceed to the next step, adiabatic shear band of these three matrix materials has been analyzed with finite element method. The result shows that the relations between stress and strain are different because of the differences of technical process of the three materials, but they are in great commonness in the material experiment and in great coherence in the distribution of time and space, which can been seen from the space distributing figures of plastic strain.

利用分离式Hopkinson压杆实验技术对三种不同变形量(0%、32.6%、44.6%)钨合金基体材料进行动态压缩实验,取得大量精确的数据,对比分析三种材料,结果表明通过改变变形量对材料进行优化,其变形量的优化值是有一定范围的;本论文拟合、确定了钨合金基体材料Johnson-Cook本构模型参数并对三种基体材料绝热剪切带进行有限元分析,结果表明三种材料由于工艺流程的不同,应力应变关系也不尽相同,但从塑性应变的空间分布图上体现了材料很大的共性和时间以及空间分布的一致性。

It was shown that the matrix suction decreased with the increase of the water content and density. The relationship among temperature, density, matrix suction and water content was exponential.

试验数据分析表明:基质吸力随含水率的增大而减小;基质吸力随密度的增大而增大:温度、密度、基质吸力与含水率之间符合幂函数的变化关系。

While 30-year mean temperature data from 624 meteorological stations in China was spatialized, the temperature was divided into regular component, which is affected by longitude, latitude and altitude, and irregular component affected by other local factors. They were spatialized with multiple variable regression and inverse distance weighted interpolation respectively. There was a correlation ratio of R=0.98 between temperature and geographical factors including longitude, latitude and altitude.

在对中国624个气象站多年平均气温数据空间化过程中,通过30秒分辨率的数字高程数据,把气温分解为受经纬度、海拔高度影响的规律性成分和受其它因素影响的非规律性成分两部分,并分别用多元回归和反距离权重内插方法对二者实施空间化,最后将空间化结果进行合成得到基於栅格的中国多年平均气温分布数据。

Data analysis shows that relation between matric suction and density at different m...

数据分析表明:基质吸力与干密度的关系在不同的含水量段具有不同的特点;基质吸力与含水量呈强非线性关系;在土的水分状态和密度状态空间,基质吸力的分布为一变形的 W 型折曲面。

This method prefilters input data by the orthonormal basis functions in order to get some dynamic characteristics. Unfortunately, the gradient algorithm could not be directly used in parameter identification because the prefiltered data do not have time shift characteristic anymore.

该方法通过正交基函数对输入数据进行滤波,使得滤波后的数据蕴涵着系统的部分动态特性,但也使滤波后的数据不再满足时移特性,因而无法直接使用梯度算法对模型参数进行辨识。

This method pre filters input data by the orthonormal basis functions in order to get some dynamic characteristics. Unfortunately, the gradient algorithm could not be directly used in parameter identification because the pre-filtered data do not have time shift characteristic anymore.

该方法通过正交基函数对输入数据进行滤波,使得滤波后的数据蕴涵着系统的部分动态特性,但也使滤波后的数据不再满足时移特性,因而无法直接使用梯度算法对模型参数进行辫识。

The system of phase equilibrium data of the Fe-Cu base alloy is established relatively, the spinodal decomposition range of the Fe-Cu base alloy is calculated utilizing Thermo-Calc software, The composition range of the spinodal decomposition of the Fe-Cu base alloy is prognosticated with more accuracy; The self-formed mechanism of egg-type microstructure of the Fe-Cu base alloy with spinodal decomposition in the liquid-phase region under gravity conditions is theoretically investigated. Based on the analysis and calculation of interfacial tensile stress induced by the temperature gradient in the process of solidification, the theoretical results interpret preferably the self-formed mechanism of egg-type microstructure of the Fe-Cu base alloy through the analyzing of force states of metallic droplet in the rapid solidification.

建立了较为完整的铁铜基合金系的相平衡数据体系,利用Thermo-Calc软件对铁铜基合金系的液相调幅分解成分范围进行了计算,较准确地对铁铜基合金系的液相调幅分解成分范围进行了预测;从理论上对液相调幅分解型铁铜合金卵型结构的形成机理进行了研究,基于凝固过程中由温度梯度所导致的界面张力的分析与计算,通过考察快速凝固过程中金属液滴受力情况,较好地解释了液相调幅分解型铁铜合金卵型结构的自形成机理。

This article elaborated one kind of automated test system used to test the data transmission system on the satellite.Now adays,the data transmission system has a greater capacity and higher transmission speed.This test system makes the function and performance index test more effective.

在现今星基遥感探测技术高速发展的大环境下,为更加有效地检测大容量、高速率的卫星数据传输系统的各项功能、性能指标,设计了基于空间数据系统咨询委员会建议的高级在轨系统高速遥感卫星数据传输地面自动化测试系统。

Direct competitions of intramolecular C - H insertions into benzylic C - H and 4-nitroor 4-methoxy substituted benzylic C - H of methyl 2-diazo-3-oxo-6-(4-substituted phenyl)-4-(2-phenylethyl)hexanoate 44a and 44b catalyzed by Rh-mediated carbenoid were alsoinvestigated, and the relative reactivities obtained by compound 44a or 44b were comparableto those obtained by indirect method.

此外,还研究了Rh催化分解下,对位硝基取代或甲氧基取代的4-(2-苯基乙基)-6-(4-取代苯基)-2-重氮基-3-氧代己酸甲酯44a、44b苯甲位C-H插入反应的相对速率,与化合物47a和47f得到的结果比较,数据平行。

The extraction equilibrium constants of Nd , Eu , Am in the system of seven monoacidic organophosphorus compounds dodecane 1. 0mol/l NO〓are reported. The dependency of the extractability on the PO〓function group、bonding charactor、metallic ion species and the structure of substitute has been examined.

给出了七个烷基磷酸的正十二烷熔液从1.0mol/lNO〓水溶液中萃取Nd、Eu、Am的平衡分配常数Kex,考察了萃取剂PO〓官能团、萃合物成键特性、金属离子及取代基结构与萃取性能间的关系,发现了:(1)可运用取代基自由能加和模型预测辛基膦酸辛基酯对La、Eu、Nd、Am等三价离子的平衡分配数据。

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