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; 文章编号:1672-7207(2014)02-0615-07 Geometrical non-linear characteristic of flexible suspension bridge CAO Guohui1, HU Jiaxing2, ZHANG Kai1, LIU Chao1 (1. College of Civil Engineering... gradually reduce in sections near L/4 and 3L/4 and gradually increase in sections near L/8 and 7L/8 and almost equal in sections near L/2, 3L/8 and 5L/8. Key words: flexible suspension bridge; geometrical non......
motion control of the robot, additional pan tilt zoom control, and additional robot arm control. 2 Ad hoc wireless SLAM network structure and deployment strategies 2.1 Mobile wireless local network structure The robotic modules are designed as mobility nodes of a mobile wireless local network, and explore the unstructured environment with their on-board sensors; each mobile module is equipped......
for predicting and simulating the external noise of high-speed train was established based on the external noise source identification of train and the theory of geometrical acoustics. The prediction.... Key words: acoustics; high-speed train; external noise; geometrical acoustics; noise source contribution 自20世纪90年代以来,科研工作者对高速列车车外通过时的噪声进行测试和分析,得到其随速度变化的演变规律[1].MELLET等[2]利用距离轨道7.5 m,轨面1.2 m高处麦克风测得了TGV......
) was employed to study the local structure of Fe atoms for samples before and after doping Dy, Tb or Gd. It is found that the bond lengths and coordination numbers are changed. Thus, the exchange...Relating atomic local structures and Curie temperature of NdFeB permanent magnets:an X-ray absorption spectroscopic studyMu-Nan Yang1,Hang Wang1,Yong-Feng Hu2,Liu-Yi-Mei Yang2,Aimee Maclennan2,Bin......
. 3 Relationship between local strain and normalized distance of 5A90 Al-Li alloy at different initial strain rates 在475 ℃下改变初始的应变速度进行拉伸,得到平均空洞尺寸,体积分数与局部应变之间的关系如图6和7所示.随着局部应变的增大,空洞的尺寸与体积分数呈现上升增大的趋势. 图4 初始应变速率为8×10-4 s-1的条件下5A90铝锂合金局部应变的分布及纵截面的显微组织 Fig. 4 Local strain distribution and microstructures of longitudinal section of 5A90 Al-Li alloy deformed at initial strain rate of 8......
Trans. Nonferrous Met. Soc. China 24(2014) 1890-1897 Effect of initial pH on chalcopyrite oxidation dissolution in the presence of extreme thermophile Acidianus manzaensis Chang-li LIANG1,2, Jin-lan... Received 21 June 2013; accepted 5 November 2013 Abstract: The influence of initial pH on the chalcopyrite oxidation dissolution at 65 ℃ was investigated by bioleaching and cyclic voltammetry experiments......
Creating Local Reinforcement of a Channel in a Composite Casting Using Electromagnetic SeparationSlawomir Golak,Maciej DyziaFaculty of Materials Engineering and Metallurgy, Silesian University of Technology摘 要:This article presents a new method to obtain local reinforcement in near-surface layers of channels in castings made of a particle-reinforced......
capacity can be achieved by choosing suitable initial imperfections based upon linear buckling modes results. The imperfection is a combination of local and global deflections, which are illustrated... length parameters. Appendix B: Modification to generation of local imperfection A Fortran subroutine was defined to modify the generating of initial local imperfection: subroutine impd(lnode,dd,td......
Model Analysis of Initial Hydration and Strueture Forming of Portland Cement董荣珍摘 要:<正>The auto efficiently hydration heat arrangement and the non-contacting electrical resistivity device were used to test the thermology effect and the resistivity variation of Portland cement hydration. The structure forming model of Portland cement initial......
unit area than those with coarse initial grain sizes. Thus, due to the high density of the grain boundary in the fine grain structure, conditions are provided for the activation of the GBS deformation... constitutive model was proposed to modify the term in the original Johnson-Cook constitutive model. The new model can be used to describe and predict the flow stress of AA1070 aluminum with different initial......
