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期刊Boundary element simulation of size effect in quasi brittle aggregate materials
《哈尔滨工业大学学报:英文版》2000年第1期35-38,共4页孟庆元 张彤 杜善义 
A nonlinear multi zone boundary element method is applied to simulate the size effect of a series of geome trically similar three point bend specimens. The material in which particles are randomly dispersed in a relat...显示全部
关键词:size effect BOUNDARY element method PARTICLE dispersed composites 
期刊Rare Earth elements in Manganese Nodules from the Central Pacific Ocean
《地质学报:英文版》1992年第4期371-383,共13页Guo Shiqin Sun Wenhong China Ocean Mineral Resources Research and Developmetn Association Institute of Mineral Deposits, Chinese Academy of Geological Sciences Liu Linqun 
Manganese nodules in areas CP and CC of the central Pacific are rich in REE. Comparatively speaking,the REE contents of nodules in area CP are hihger than those in area CC; and the REE contents of nodulesfrom seamount...显示全部
关键词:MANGANESE NODULE RARE earth element PACIFIC 
期刊吉林西部土壤微量营养元素有效量及其影响因素(英文)被引量:4
《农业科学与技术:英文版》2010年第5期73-76,共4页施宪 王冬艳 李月芬 靳克 郭珍 
Supported by a Sub-project "Ecological Geochemical Survey of Oil Crop (sunflower) Producing Area in Western Jilin" of the Project of China Geological Survey and Jilin Provincial Government " Agricul-tural Geological Survey of Jilin Province"~~
通过对吉林西部3个工作区土样的微量营养元素全量、有效量以及土壤pH值和有机质含量的测定,分析了土壤微量营养元素有效量特征及其影响因素。结果表明,吉林西部有效B基本不缺乏;有效Mn含量极丰富;有效Cu含量农安极丰富,明显高于其它2区...显示全部
关键词:吉林西部 西部土壤 微量 营养 元素有效量 影响因素 WESTERN Jilin FACTORS NUTRIENT element negative correlation NUTRIENT elements organic matter 含量的测定 positive affecting FACTORS 土壤有效 WESTERN Jilin 土壤有机质 地区差异性 trace 
期刊Behavior of external welded flange-bolted web joints of steel structure exposed to fire
《哈尔滨工业大学学报:英文版》2011年第1期89-95,共7页胡军 姚斌 厉培德 
Sponsored by the National Natural Science Foundation of China(Grant No.50676089)
In order to investigate the behavior of external welded flange-bolted web joints of steel structure exposed to fire,a series of experiments were carried out.Influence of fire model and load ratio on the behavior of th...显示全部
关键词:steel joint FIRE experimental study finite element modeling 
期刊Computer simulation of thermochemical treatments: modelling diffusion and precipitation in metals
《上海交通大学学报:英文版》2000年第1期303-309,共7页R. Fortunier, J.B. Leblond, J.M Bergheau 1.ENSM-SE, centre SMS, 158 yours Fauriel, 42023 - St-Etienne cedex 02, France 2.LMM, UMR 7607/CNRS/Universite Paris VI, Tour 66, case 162, 4 place Jussieu, 75252 Paris cedex 05, France 3.LTDS, UMR 5513, CNRS/ECL 
A model for simultaneous diffusion and precipitation in metals has been recently incorporated into a finite element computer code [1][2]. This model allows now for numerical simulations of various thermochemical treat...显示全部
关键词:THERMOCHEMICAL treatment DIFFUSION PRECIPITATION FINITE element method 
期刊A Study of Multiple Solutions for the Navier-Stokes Equations by a Finite element Method
《高等学校计算数学学报:英文版》2014年第1期107-122,共16页Huanxia Xu Ping Lin Xinhui Si 
The work is supported by the Research Foundation of Engineering Research Institute of USTB(No.Yj2011-015);the Fundamental Research Funds for the Central Universities(No.FRF-TP-12-108A,No.06108137);University of Science and Technology Beijing Research Grant(No.06108038);the national natural Science Foundations of China(Nos.51174028,51004013).
In this paper,a finite element method is proposed to investigate multiple solutions of the Navier-Stokes equations for an unsteady,laminar,incompressible flow in a porous expanding channel.Dual or triple solutions for...显示全部
关键词:Finite element method Navier-Stokes equations porous channel expanding walls 
期刊The effect of electrochemically inactive Ti substituted for Ru in Li_(2)Ru_(1-x)Ti_xO_(3) on structure and electrochemical performance
《能源化学:英文版》2021年第9期222-228,共7页Ye Yao Lu Zhang Florian Sigel Bjorn Schwarz Helmut Ehrenberg Gang Chen Fei Du Chunzhong Wang 
supported by the Nature Science Foundation of Changchun Normal University and Research Foundation for Advanced Doctor of Changchun Normal University。
The approach of substituting electrochemically active with inactive elements has widely been used to improve the electrochemical performance of Li-rich intercalation cathode materials. This especially is true for Li-r...显示全部
关键词:Li_(2)Ru_(1-x)Ti_xO_(3) Lithium ion batteries Inactive element substitution XRD NMR 
期刊Experiments and 3D DEM of Triaxial Compression Tests under Special Consideration of Particle Stiffness
《地质材料(英文)》2018年第4期39-62,共24页Marx Ferdinand Ahlinhan Ernesto Houehanou Marius Bocco Koube Valery Doko Quirin Alaye Nicholas Sungura Edmond Adjovi 
Discrete element modelling is commonly used for particle-scale modelling of granular or particulate materials. Developing a DEM model requires the determination of a number of micro-structural parameters, including th...显示全部
关键词:GRAIN Size Dependent STIFFNESS Experiment Discrete element Modelling TRIAXIAL Compression Test Non-Cohesive SOILS Materials 
期刊Prevention of thinning at disc center during rotary forging
《哈尔滨工业大学学报:英文版》2000年第1期39-41,共3页刘钢 苑世剑 谢陶 王仲仁 
theNationalNaturalScienceFoundationofChina!( 5 940 5 0 13 )
Presents the simulation and analysis of the rotary forging of a disc using a finite element method, which reveals the thinning at the disc center is caused by higher radial and tangential tensile stresses resulting fr...显示全部
关键词:FINITE element simulation ROTARY FORGING THINNING at DISC CENTER 
期刊UNIQUENESS OF SOLUTION OF FIELD POINT OF SINGULAR SOURCE OUTSIDE-REGION-DISTRIBUTION METHOD
《应用数学和力学:英文版》1999年第1期36-42,共7页云天铨 
The uniqueness of solution of field point, inside a convex region due to singular source(s) with kernel function decreasing with distance increasing, outsidergeion-distribution(s) such that the boundary condition expr...显示全部
关键词:solution of SINGULAR sources SINGULAR SOURCE outside-region-distribution METHOD non-singular INTEGRAL EQUATION METHOD boundary element METHOD line-loaded INTEGRAL EQUATION METHOD 
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