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Effect of Initial Crown on Shape of Hot Rolled Strip

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Journal of Iron and Steel Research International 2009年第5期16卷 32-34页

作者： HU Yu GONG Dian-yao jiang zheng-yi XU Jian-zhong ZHANG Dian-hua LIU Xiang-hua State Key Laboratory of Rolling Technology and Automation Northeastern University Shenyang 110004 Liaoning China AriTime Co Ltd Beijing 100070 China Faculty of Engineering University of WoUongong Wollongong NSW 2522 Australia

Based on the influence coefficient method, the effect of entry strip crown on the shape of hot rolled strip was analyzed using the software of roll elastic deformation simulation. According to the practical condition of a domestic hot rolled strip plant, the unit strip crown change from the first stand to the last stand was calculated when the entry crown of hot strip varies. The calculated result shows that the entry strip crown does not significantly affect the target strip crown at the exit of the last finishing stand in respect to a fixed strip shape control reference （such as bending force）. The calculation was analyzed, and the research is helpful in modeling strip shape setup and shape control.

关键词： influence coefficient method strip crown crown effect rate hot rolled strip

Thermal , Microstructural and Mechanical Coupling Analysis Model for Flatness Change Prediction During Run-Out Table Cooling in Hot Strip Rolling

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Journal of Iron and Steel Research International 2012年第9期19卷 43-51页

作者： WANG Xiao-dong 1 , 2 , LI Fei 1 , jiang zheng-yi 2 ( 1.Shougang Research Institute of Technology , Shougang Group , Beijing 100043 , China 2.Faculty of Engineering , University of Wollongong , Wollongong NSW 2522 , Australia ) [a] Shougang Research Institute of Technology Shougang Group Beijing 100043 China [b] Faculty of Engineering University of Wollongong Wollongong NSW 2522 Australia

Non-uniformity of temperature distribution across strip width direction is the ultimate reason why the flatness defect occurs on the strip after cooling process although the strip is flat at the exit of finishing *** thermal , microstructural and mechanical coupling analysis model for predicting flatness change of steel strip during the run-out table cooling process was established using ABAQUS finite element software.K Esaka phase transformation kinetics model was employed to calculate the phase transformation , and coupled with temperature calculation using the user subroutine program ***-plasticity constitutive equations of steel material , in which conventional elastic and plastic strains , thermal strain , phase transformation strain and transformation induced plastic strain were considered , were derived and programmed in the user subroutine program *** conclusion that flatness of steel strip will develop to edge wave defect under the functions of the differential thermal and microstructural behaviors across strip width during the run-out table cooling procedure was acquired through the analysis results of this *** results of this analysis model agree well with the actual measurements and observation.

关键词： hot rolled strip internal stress phase transformation run-out table cooling flatness

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快速固化呋喃树脂工艺造型线

铸造 2007年第11期56卷 1229-1231页

作者：侯松涛蒋正义浙江省机电设计研究院有限公司浙江杭州310009

介绍了一种把呋喃树脂自硬砂工艺应用于大批量、高效率造型线的实例。通过实践,使特定产品使用呋喃树脂工艺的起模时间由常规的15～45min变成了3min,从而大大提高了生产效率,实现了大批量产品的机械化、自动化生产。

关键词：呋喃树脂工艺起模时间造型线

微网优化控制研究现状及智能化即插即用趋势与策略

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上海交通大学学报 2017年第9期51卷 1097-1103页

作者：江海啸郑毅李少远蔡旭上海交通大学电子信息与电气工程学院上海200240 中国中车株洲电力机车研究所湖南株洲412001

微型电网是在用户侧提高整体能源效率、清洁化程度和智能化程度的重要手段,其优化运行控制是能否有效发挥上述作用的关键.分析了不同微网结构,即直流微网、交流微网和交直流微网在控制优化需求方面的异同及优缺点.重点介绍比对了目前微... 详细信息

微型电网是在用户侧提高整体能源效率、清洁化程度和智能化程度的重要手段,其优化运行控制是能否有效发挥上述作用的关键.分析了不同微网结构,即直流微网、交流微网和交直流微网在控制优化需求方面的异同及优缺点.重点介绍比对了目前微电网低层控制方法和监督层的能量管理策略.总结了目前微网控制优化的热点问题及发展趋势,并提出了智能化即插即用微网构架在算法和实现方面的解决策略.

关键词：智能微网分布式系统即插即用分布式优化

妙手抒怀写诗章——略谈莫友芝的诗歌写作技巧

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贵州民族研究 2008年第4期28卷 113-117页

作者：郑江义黔南民族师范学院中文系贵州都匀558000

莫友芝,晚清著名学者、诗人,布依族,一生诗作丰厚,写作手法丰富,本文通过研读和分析他的一些诗歌作品,对其平中显奇、虚实相生、情为焦点等三种写作技巧的运用及效果进行探讨。

关键词：莫友芝诗歌写作技巧平中显奇虚实相生情为焦点

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紧支集M-可加细样条函数的特征

吉林大学学报(理学版) 2009年第3期47卷 507-509页

作者：姜政毅关玉景吉林大学数学学院

研究Rnn空间中单纯形剖分上紧支集样条函数φ的可加细特征,给出了当加细方程的伸缩矩阵M是一个所有特征值的模都大于1的n×n整数矩阵时,φ是M-可加细的等价条件,并进一步给出了φ的平移族构成Riesz基的充要条件.

关键词：紧支集 M-可加细样条函数 Riesz基

Small modifications of endo-functionalized cavities lead to large changes in molecular interaction in water

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Science China Chemistry 2025年第1期 369-376页

作者： Song-Meng Wang Hao Nian Yan-Fang Wang Li-Shuo zheng Yu-Tao zheng yi-Wei Dong Liping Huang Xiaoping Wang Wei jiang Liu-Pan Yang Department of Chemistry Southern University of Science and Technology School of Chemistry and Pharmaceutical Sciences State Key Laboratory for Chemistry and Molecular Engineering of Medicinal ResourcesGuangxi Normal University School of Pharmaceutical Science Hengyang Medical School University of South China

Studying molecular recognition in aqueous environments is crucial for understanding biological processes. Herein, we present a series of N-doped endo-functionalized anthracene-based cavities by introducing inward-directed pyridine units. The subtle modifications can significantly affect the binding properties of these receptors, which is similar to the mutations in biological systems. Combining theoretical calculations and molecular recognition experiments demonstrated that these “mutations” have an impact on the hydrophobicity and charge distribution of the hosts, consequently significantly influencing molecular *** is crucial for understanding the intricate mechanisms of molecular-level interactions in biological receptors.

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Path Planning of Intelligent Information Acquisition Robot in Planted Forest

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Path Planning of Intelligent Information Acquisition Robot i...

A Dimension Reduction Subdivision Scheme Based on Proper Parameterization

2010 Second IITA International Conference on Geoscience and Remote Sensing (IITA-GRS 2010)

作者： Yan Fei Kan jiang-ming and zheng yi-li School of Technology Beijing Forestry University Beijing China

Considering the path planning issue of an intelligent motion robot which will be used to acquire environment information and tree growing information in a planted forest,a kind of improved genetic algorithm based path optimization method is proposed. According to tree’s distribution style in a planted forest the robot’s working environment is modeled as many grids which are labeled either ordered couples or sequence numbers. Then how to initialize the population is introduced and the fitness function to optimize the motion path of an information acquiring robot in a planted forest is defined. Some genetic operators,such as selection operator,crossover operator and mutation operator,are designed and a kind of operator to detect redundant grids is put forward. The simulation under the VC++ Platform is carried out. The result indicates that the proposed algorithm is efficient way to plan a optimal path for the information acquiring motion robot in a planted forest.

关键词： mobile robot planted forest path planning genetic algorithm

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Northeastern Mathematical Journal 2008年第1期24卷 35-44页

作者：姜政毅关玉景 Institute of Mathematics Jilin University Changchun 130012

In our previous work, we have given an algorithm for segmenting a simplex in the n-dimensional space into rt n＋ 1 polyhedrons and provided map F which maps the n-dimensional unit cube to these polyhedrons. In this paper, we prove that the map F is a one to one correspondence at least in lower dimensional spaces （n _〈 3）. Moreover, we propose the approximating subdivision and the interpolatory subdivision schemes and the estimation of computational complexity for triangular Bézier patches on a 2-dimensional space. Finally, we compare our schemes with Goldman＇s in computational complexity and speed.

关键词： subdivision dimension reduction proper parameterization