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| 1 | An effective and practical method for solving an unnegligible problem inherent in the current calculation model for multi-support seismic analysis of structures显示文摘In the seismic analysis of extended structures subject to spatially varying motions, the displacement input model instead of acceleration model is usually adopted for accurate results. In this paper, a more detailed and comprehensive analysis of the displacement input model is carried out and the research shows that there exists an unnegligible problem in the current displacement model, which leads to the irrationality and unconvergence of some calculated results such as base shear etc. Based on the situation, an effective method named massless rigid element (MRE) method is presented to solve the problem. Moreover, the rationality and accuracy of the method are further assessed and the method is applied to a transmission tower-line system project using the commercially available structural analysis software SAP2000. The theoretical and numerical analyses indicate that the MRE approach is not only feasible with sufficient computational accuracy but also practical and can be easily implemented using the commercially available finite element software such as SAP2000. | LIU GuoHuan2, GUO Wei1 & LI HongNan2 1 National Engineering Laboratory for High Speed Railway Construction, School of Civil Engineering and Architecture, Central South University, Changsha 410075, China 2 Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024, China | 2010 | Science China(Technological Sciences)2010，53，7： | 12 |
| 2 | NUMERICAL SIMULATION ON 2-D WATER-AIR TWO-PHASE FLOW OVER TOP OUTLET显示文摘Flood discharge over top outlet of dam is simulated by 2 dimension water air two phase mathematical model. Distribution of dynamic pressure, turbulent kinetic energy (k), turbulent dissipation rate (ε), free water surface and velocity field have been obtained. The simulated results were tested by physical model, which shows that the computed results are identical with that of the physical model. | Diao Ming jun, Yang Yong quan, Xu Wei lin, Wang Wei, Liu Shan junState Key Hydraulics Laboratory of High Speed Flows, Sichuan University, Chengdu 610065, China | 2002 | Journal of Hydrodynamics2002，14，3： | 9 |
| 3 | THREE-DIMENSIONAL TURBULENCE NUMERICAL SIMULATION OF A STEPPED SPILLWAY OVERFLOW显示文摘In this paper, the k ε turbulence model is used to simulate the three dimensional turbulence flow over the stepped spillway at the Yubeishan reservoir. In order to solve the curved free water surface and to handle the complex boundary conditions, the fractional Volume Of Fluid (VOF) model that is applicable to the solution of the stratified two phase flow is introduced along with k ε turbulence model and the unstructured grid is used for the discretization of the irregular simulation domain. By these methods, the turbulence flow field of the stepped spillway is simulated successfully. The location of the free surface along the spillway, the magnitude and distribution of the velocity, the pressure on the step surface, the turbulence kinetic energy and turbulence dissipation rate are obtained by simulation. The changes and distributions of these characteristics along the width of the spillway are also obtained. The energy dissipation ratio of the stepped spillway is calculated according to the upstream and downstream water depth and | Chen Qun College of Hydraulic and Hydroelectric, Sichuan University, Chengdu 610065, ChinaDai Guang qing State Key Hydraulics Laboratory of High Speed Flows, Sichuan University, Chengdu 610065, ChinaZhu Fen qing Geotechnic Engineering Co., Second | 2002 | Journal of Hydrodynamics2002，14，3： | 9 |
| 4 | 基于低风险生态流量的黄河生态用水调度研究显示文摘以黄河下游为重点生态保护对象,构建水库生态用水调度模型,对黄河基准年和未来水平年不同情景的生态用水调度方案进行优化计算。结果表明:现状工程条件下,通过水库生态用水调度,可以保障河道内生态用水;未来水平年,新增工程措施和流域需水管理可减少社会经济和生态的缺水量,其中水需求管理对于缓解流域缺水效果最好;西线由于调水规模大,缩减缺水量效果显著,对于增加下游生态用水的边际效益较低;新增水库所增加的供水效益不明显。 | 马真臻 王忠静 郑航 Christopher J.Gippel Robert Speed | 2012 | 水力发电学报2012，31，5： | 5 |
| 5 | 淬速和热处理对纳米双相Nd_2Fe_(14)B/α-Fe磁体的性能和微结构的影响显示文摘用熔体快淬法制备了高性能纳米双相耦合Nd2Fe14B/α Fe磁体,研究了快淬速率和热处理工艺对其磁性能和微结构的影响。实验结果表明,控制快淬速率在12m·s-1时,可直接得到显微组织均匀、α Fe相粒子细小且均匀分布的纳米双相耦合Nd2Fe14B/α Fe磁体。低温退火处理后可消除由少量非晶相带来的成分不均匀性,其最高磁性能为iHc=432.2kA·m-1,Jr=1.08T,(BH)max=115kJ·m-3。快淬速率提高,非晶相体积分数增加,在高温晶化热处理时软硬磁相析出不均匀,个别α Fe相粒子奇异长大,尺寸达到100nm左右,这不利于软硬磁相间的交换耦合作用,有损磁性能。 | Effect of Wheel Speed and Annealing Process on the Magnetic Properties and Microstructure of Nanocomposite Nd2Fe14B/α-Fe Magnets 杨森 李山东 刘先松 谢国治 田宗军 宋晓平 顾本喜 都有为 | 2002 | 中国稀土学报2002，20，z2： | 4 |
| 6 | NUMERICAL MODELLING OF THE WATER AIR TWO PHASE JET INTO A PLUNGE POOL显示文摘The areated jet into a plunge pool is simulated by using a mathematical model of water air two phase flow. The equation of air mass fraction is employed together with the equations of the algebraic stresses model (ASM) of water air mixture to give the distributions of the air concentration and other flow parameters. The computational air concentration distribution is in agreement with the experimental data. | Xu Wei lin, Wang Wei, Yang Yong quan, Chen Jian kang State Key Hydraulic Lab. of High Speed Flows, Sichuan University, Chengdu 610065, P.R.China (Received Sep. 23, 1997) | 1999 | Journal of Hydrodynamics1999，11，3： | 3 |
| 7 | NUMERICAL SIMULATION OF FLOW FOLD OF A RIVER WITH COMPLICATED BOUNDARIES显示文摘NUMERICAL SIMULATION OF FLOW FIELD OF A RIVER WITH COMPLICATED BOUNDARYSNUMERICALSIMULATIONOFFLOWFOLDOFARIVERWITHCOMPLICATEDB... | Xu Wei-lin Liao Hua-sheng (State Key Hydraulics Lab. of High Speed Flows, Sichuan Union University, Chengdu 610065, P. R. China) | 1996 | Journal of Hydrodynamics1996，8，3： | 2 |
| 8 | Clinical and host differences between infections with the two varieties of Cryptococcus neoformans显示文摘 | Speed B Dunt D | 1995 | Clin Infect Dis1995，21，1： | 1 |
| 9 | Trial of aboiximab with and without low- dose reteplase for acute myocardial infarction显示文摘 | | 2000 | Circulation2000，101，24： | 1 |
| 10 | Tissue-specific estrogen biosynthesis and metabolism显示文摘 | Simpson ER Clyne C Speed C | 2001 | Ann N Y Acad Sci2001，949，： | 1 |
| 11 | Crystalliza- tion of three key glyeolytic enzymes of the opportun- istic pathogen Cryptosporidium parvum 显示文摘 | Senkovich O Speed H Grigorian A | 2005 | Biochim Biophys Acta2005，1750，2： | 1 |
| 12 | Low back pain显示文摘 | Speed C | 2004 | BMJ2004，328，7448： | 1 |
| 13 | Parametric optimization andSurface characterization of wire electrical dischargemachining process 显示文摘 | Speeding T A Wang A Q | 1997 | Precision Engineering1997，，20： | 1 |
| 14 | 螺丝、螺栓、螺母的拆装方法显示文摘读者朋友你们好!我是本刊测试总监倪巍。改刊以来,为了本刊定位更加明确是给摩托车爱好者看的,所以维修栏目的相关知识逐渐减少。近期很多玩车的车友向我反映,即使是玩车的车友也关心一些维修保养的小常识,应该在杂志上刊登些维修保养的小常识的文章,便于自己动手保养维修自己的爱车。我也同样认为在闲暇之余自己动手修修车何尝又不是件惬意的事儿呢?相信, | Speed Boy | 2010 | 摩托车2010，，8： | 1 |
| 15 | Analysis of six anticonvulsant drugs using solid-phase extraction, deuterated internal standards, and gas chromatography-mass spectrometry 显示文摘 | Speed DJ Dickson SJ Cairns ER | 2000 | J Anal Toxicol2000，24，6： | 1 |
| 16 | Hypertensionin Response to Chronic Reductions in Uterine Perfusion in PregnantRats: Effect of Tumor Necrosis Factor-a Blockade 显示文摘 | Babbette LaMarca Josh Speed Lillian Fournier | 2008 | Hypertension2008，52，6： | 1 |
| 17 | Candidate SNPs for a universal individual identification panel显示文摘 | Pakstis AJ Speed WC Kidd JR | 2007 | Hum Genet2007，121，34： | 1 |
| 18 | Developing a SNP panelfor forensic identification of individuals 显示文摘 | Kidd KK Pakstis A J Speed WC | 2006 | Forensic Science International2006，164，： | 1 |
| 19 | 显示文摘 | Huff T Speed C S | 1981 | J Appl Polym Sci1981，26，： | 1 |
| 20 | Comparison of discrimination methods for the classification of tumors using gene expression data显示文摘 | DUDOIT R FRIDLY J SPEED T P | 2002 | Journal of the American Statistical Association2002，97，457： | 1 |
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