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Online since: June 2013
Authors: Jian Qiang Li, Yan Hui Zhang, Zeng Hua Lin
Research of the Vibration Signal for the Bridge Structure Base on Stochastic Minus Method Yanhui Zhang1,a , Zenghua Lin1,b and Jianqiang Li1,c 1School of Civil, University of Science and Technology LiaoNing, China aTy-zhangyanhui-1@163.com bLzh1981@163.com cLijq992@163.com Keywords: Bridge Structure; Vibration Signal; Seismic Excitation ; Stochastic Minus Method.
We use MATLAB software to achieve Stochastic Minus method by programming, and deal with the vibration signal of this bridge. 2.1 The Establishment of Finite Element Model According to the material properties and geometric characteristics of the bridge structure, we establish the spatial finite element model of the bridge.
Shown in Fig.1 Fig 1 The Object Model of Continuous Beam Bridge The initial parameters of materials which is used in model calculations is shown in Table 1.
Table 1 Initial Parameters of Materials Modulus of Elasticity Poisson Ratio Density Prestressed Steel Beam Concrete 1.95×105 3.45×104 0.3 7850 2.2 Simulation of Earthquake Load With the software MATLAB, we get the Simulated Time-histories Curve of earthquake action.
Journal of Structural Engineering,ASCE,1991,117(11):3396-3416
Online since: September 2011
Authors: Mei Niu, Hai Bin Fan, Wen Sheng Hou, Jin Ming Dai, Zi Lu Wu, Sheng Shi
Structure and Properties of MWNTs-OH/PET FDY Composite Fiber Wensheng Hou1,2,a, Haibin Fan 1,b,Mei Niu1,c,Jinming Dai1,d, Zilu Wu 1 and Sheng Shi1 (1.College of Textile Engineering and Arts, Taiyuan University of Technology, Taiyuan, Yuci 030600) (1.College of Material Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024) awshou10@163.com,bfanhaibin721@sina.com,cniumeityut@163.com, dtgmydjm@163.com Keywords: PET, MWNTs-OH, Terephthalic acid (TPA), Composite fiber Abstract.
Since the discovery of CNTs in 1991, it has been a focus of research for a long time, Now, it has been widely used in the CNTs/PET composite materials.
However, having a good dispersion and compatibility of CNTs in polymer matrix is one of the prerequisites for composite materials to obtain excellent properties.
Journal of Tianjin Polytechnic University.
Online since: February 2014
Authors: Jian Gang Yi
They are unable to understand the fun of science exploration, and lose the motivation of learning.
Fig.1 Assembly design based on SolidWorks Fig. 2 Force analysis based on Ansys Figure 2 is the force analysis of some part designed by the students in the learning of material mechanics and elastic mechanics courses.
Corresponding Author Yi Jiangang, yjg_wh@yeah.net, 18971241633 References [1] Zhang Ximiao, Zhou Yuexi, Educational reform of importing chinese traditional color culture into the design education after cultural innovation, Applied Mechanics and Materials, vol. 201-202, p. 1017-1020, 2012
International Journal of Advancements in Computing Technology, vol. 4, p. 430-437, 2012 [4] H.Liu, J.Wang, N.Kelson.
A study of abrasive water jet characteristics by CFD simulation, Journal of Material Processing Technology, vol. 153, p. 488-493, 2004 [5] Elmagroud Bachir, Ziyyat Abdelhak.
Online since: May 2015
Authors: Yi Chern Hsieh, Minh Hai Doan, Ming Heng Ke, Zhao Nan Chen
Introduction Micro-contact mechanics is becoming a more and more important issue in materials science and mechanic behaviors.
Experiment The major purpose of this experiment is to find the different material point contact behavior.
References [1] Bin, Li: A review of tool wear estimation using theoretical analysis and numerical simulation technologies, International Journal of Refractory Metals and Hard Materials, 35, 143-151, (2012)
[5] Jingzheng Ren, Suzhao Gao, Shiyu Tan, Lichun Dong: Prediction of the yield of biohydrogen under scanty data conditions based on GM(1,n), International Journal of Hydrogen Energy, 38, 13198-13203, (2013)
Online since: November 2014
Authors: Jian Yun Yan
Besides, clothing enterprises can realize the clothing material local procurement, which reduces procurement costs.
Continuing to keep advantages of the labor and raw material.
In addition, the industrial region in Fumian is broad and have rich raw materials, so it provides a good resourceful condition for the development of the clothing enterprises in Fumian.
Journal of professional space and time, 2010(5)66-78
Journal of modern guangxi, 2012(11)18-25.
Online since: January 2013
Authors: Xian Jun Meng, Li Jie Zhu, Xin Yao Jiao, Bin Li
Triterpenoids were found in Schisandra which has been so far confined to Schisandra chinensis Baill, in view of these beneficial effects, a large quantity of pure materials are urgently needed for further studies.
Materials and method Apparatus.HSCCC was carried out with a model TBE-300A high-speed counter-current chromatography (Shanghai, Tauto Biotech, China).
Acknowledgments Financial support from the Liaoning Provincial Science and Technology Department for Doctor Start Funds (NO.20121139) and Youth Fund of SYAU(NO.20101007) are gratefully acknowledged.
References [1] Wei-Lie Xiao, Shi-Ying Yang, Liu-Meng Yang, Journal of Natural Products,73(2010), p. 221
[2] L.Opletal,H.Sovová,and M.Bártlová, Journal of Chromatography.B,33(2004),p.357
Online since: June 2013
Authors: Fa Ju Qiu, Guang Min Cao, Zhang Yan Zhao
Most welded components, with different material strengths, do not have significant different fatigue strengths.
Determine the group classification of the structure based on the number of the agreed stress cycles and the stress spectrum Notch effect of the target area of the used material.
Fatigue strength of a structure depends on material’s mass and the shape and manufacturing of the joints.
Gui: A Study on the Cause and Remedy Measure of Fatigue Destruction in Portal Crane, Journal of South China University of Technology (Natural Science Edition) Vol.29 (2001), p.99(in Chinese)
Dahle: Long-life Spectrum Fatigue Tests of Welded Joints, International Journal of Fatigue, Vol.16 (1994), p392-396
Online since: March 2007
Authors: Marcelo Henrique Prado da Silva, H.F.G. Abreu, Sergio S.M. Tavares, S.S. Carvalho, T.H.T. Eduardo, Antonia Daniele S. Bruno
The major world supplier of ferro-niobium and niobium oxide is Companhia Brasileira de Metalurgia e Mineração (CBMM) from Brazil and most of the raw material used in the practical superconducting alloys comes from this source [3].
Materials and Methods Pure hot rolled niobium sheets were cold rolled to 30, 60, 80 and 90% from the initial thickness in successive steps in a laboratory rolling mill.
Journal of the Less-Common Metals, 139 (1988) 107 - 122 2- Hgrmann M., Production of High Thermal Conductivity Niobium on a Technical Scale for High Frequency Superconductivity, Journal of the Less-Common Metals, 139 (1988) 1 - 14 3- Wojcik , C.C., Wah, C., Thermomechanical Processing and Properties of Niobium Alloys, Proceedings of the International Symposium Niobium 2001 Orlando, Florida, USA.
-J and Roters F., Theory of orientation gradients in plasticallynstrained crystals, Acta Materialia 50 (2002) 421-440. 7-Sandim H.R.Z., Lins J.F.C., Pinto A.L., Padilha A.F., Recrystallization behavior of a cold rolled niobium bicrystal, Materials Science and Engineering, A354, 2003, 217-228.
Online since: May 2014
Authors: Feng Yun Li, Fu Bo Cao
The bond behavior between concrete and steel is an important index of the two kinds of materials of collaborative work.
The effects of different sources of high strength concrete blocks, recycled coarse aggregate formed by the jaw crusher instead of natural aggregate, design different recycled coarse aggregate replacement rate and different anchorage length as the main parameters, the bond slip behavior between steel bar and concrete research.[1-5] 1 The test situation 1.1Test materials.
All kinds of raw material of recycled concrete: Grassland card west water cement factory production of ordinary Silicate cement 32.5R, Ordinary sand, Drinking tap water.
References [1] Xiaojianzhuang.lipeisheng.qinwei Recycled concrete and the bond slip behavior between steel[J] Journal of tongji university (natural science edition) 2006(01):52-58 [2] Mukai T, Kikuchi M.
Journal of Harbin institute of technology university. 2010(12):45-48.
Online since: September 2013
Authors: Shi Chao Xiu, Ming He Liu, Xiu Ming Zhang
In fact, the impact effect is accompanied across the material removal process.
The abrasive shows the most significant impact effect on the materials of contact area when the moment wheel contacts with the workpiece.
And its material is 55 steel.
Acknowledgement This research work is supported by the National Natural Science Foundation of China under granted No.51075065.
:International Journal of Machine Tools and Manufacture, vol.41-2, (2001), p.283~309 [3] S.Kawamura, M.