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Stress analysis of grain steel silo with hole Qifeng Peng 1, a, Fan Wang 1,b 1Mechanical and Civil Engineering, Jinan University, Guangzhou,China apqifen168@qq.com, btwfan@jnu.edu.cn Key words: grain steel silos, hole, Frame, Finite element analysis Abstract.
After reasonable simplification of the model, the finite element analysis of grain steel silos was studied according to the practical engineering.
Then a result similar with the practical engineering was obtained, which can gives a reference about the safe storage of silos to the engineers and researchers.
Journal of Structural Engineering，ASCE， 123-12(1997)，p.1622 [3] Jianwu Pan，Calculation Analysis and Treatment Measures of the Strengthening of One Steel Silo [J].

Influence of Different Loading Modes on Rock Tensile Strength Ru WANG 1, a, Chun'an TANG2, b , Shuhong WANG 1, c ,Zhiyuan WANG 1, c and Tianhui MA 1, 3, c 1 Center for Rock Instability and Seismicity Research, Northeastern University, Shenyang 110004, China 2 School of Civil and Hydrauicl Engineering, Dalian University of Technology, Dalian 116024, China 3 Center for Material Failure Modeling Research, Dalian University, Dalian, 116622, China awangru4476@sina.com, bcatang@mechsoft.cn, cshwangneu@126.com Keywords:Tensile strength; Splitting test; Loading mode; Numerical simulation; Stress state.
Thus it is of very importance to improve the design and analysis in underground engineering.
We consider that the key to this two points is not the tested values or the errors of specimen, but whether the stress states of the specimen are similar to the rock unit in the rock mass engineering.
Because the stress state of the failure regions in general rock mass engineering, e.g. the crown of tunnels, the top of side slopes etc., are very similar to the center section of disc in the splitting test.
The stress states of most regions on the central section were similar to that given by theoretical analysis and were similar to the stress states of general engineering rock mass during failure.

The Influence of Temperature on the Galvanic Corrosion in Multi-material System in Seawater Wang Chun Li 1, a, Wu Jian Hua 2,b 1College of Aerospace and Civil Engineering Harbin Engineering University Harbin, China 2State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Materials Research Institute Xia Men, China aspring555555@126.com, bwujh@sunrui.net Keywords: galvanic corrosion, temperature, titanium, Cu-Ni alloy, low alloy steel.
The galvanic corrosion is stimulated because of the potential difference existed among the different metals in ocean engineering structures that a lot of metal materials are widely used.
The objective of this work was to study the effect of temperature on the galvanic corrosion between commercially pure titanium(TA2), Cu-Ni alloy(B10) and low alloy steel(921A) in seawater (three alloys electrically connected in existence in the real-world engineering structures).
Bardner: Automotive Engineering, Vol. 102(1994), p. 103-105 [3] F.

Use of Open Source DIC Tools for Analysis of Multiple Cracking in Fiber-Reinforced Concrete Václav NEŽERKA1,a, Jakub ANTOŠ1,b, Tereza SAJDLOVÁ1,a, and Pavel TESÁREK1,d Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7, 166 29 Prague, Czech Republic a vaclav.nezerka@fsv.cvut.cz, b jakub.antos@fsv.cvut.cz, c tereza.sajdlova@fsv.cvut.cz, d tesarek@fsv.cvut.cz Keywords: DIC, open source software, MATLAB, optical measurement, strain localization.
Li, A fast digital image correlation method for deformation measurement, Optics and Lasers in Engineering 49 (2011) 841-847
Habraken, Quality assessment of speckle patterns for digital image correlation, Optics and Lasers in Engineering 44 (2006) 1132-1145
Xie, Mean intensity gradient: An effective global parameter for quality assessment of the speckle patterns used in digital image correlation, Optics and Lasers in Engineering 48 (2010) 469-477
Tang, Systematic errors in two-dimensional digital image correlation due to lens distortion, Optics and Lasers in Engineering 51 (2013) 140-147.

Analysis of Key Technologies for Aeroengine Maintenance Based on Virtual Reality Hong Shi1,a, Song Xiang 1,b and Jing Wang 1,c 1 School of Aeroengine & Energy Engineering, Shenyang Institute of Aeronautical Engineering, No 37 Daoyi South Avenue, Shenyang, People's Republic of China, 110136 a shihong0809@yahoo.com.cn, b xs74342@sina.com, ctiandi407@yahoo.cn Keywords: Aeroengine; virtual maintenance; virtual simulation; maintainability analysis Abstract.
Hao: The Theory and Method of Maintainability Engineering [M].
Hao: Status &Trend of Visualized Maintainability Design &Analysis [J] (China Mechanical Engineering.1999), pp.41-44
Dai: Research on Maintainability Virtual Analysis and Verification Methods of Civil Airplane [D] (Nanjing University of Aeronautical and Astronautics.2006), pp.3
Liu: Design and Realization of Maintenance Therblig Model in Virtual Maintenance Simulation [J] (China Mechanical Engineering.2005), 16 (2), pp.156-160

Comparison of Micromechanical Parameters of Different Dental Implants Using Nanoindentation Aleš Jíra1, a *, Vlastimil Králík1, b, František Denk1, c and Lubomír Kopecký1,d 1Czech Technical University in Prague, Faculty of Civil Engineering, Thákurova 7, 166 29 Prague, Czech Republic ajira@fsv.cvut.cz, bvlastimil.kralik@fsv.cvut.cz, cfrantisek.denk@fsv.cvut.cz, ckopecky@fsv.cvut.cz Keywords: nanoindentation, dental implant, hydroxyapatit, reduced modulus Abstract.
Bhatt, Biomimetic and Supramolecular Systems, Materials Science and Engineering C. 27 (2007) 837-848
Němeček, Nanoindentation of human tooth dentin, Key Engineering Materials. 606 (2014) 133-136
Kopecký, Application of micromechanics in engineering practice, In: 8th Internation Conference on Engineering Computational Technology, Croatia, 2012, pp. 1-17.

Numerical Simulation of a 100m Offshore Anemometer Tower Lei Li1, a, Zhaokun Pang2, b and Zhaode Zhang1, c 1School of Naval Architecture and Civil Engineering, Zhejiang Ocean University.
Zhoushan, Zhejiang, China 2School of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology.
Journal of wind engineering and industrial aerodynamics.pp1-9(2011)
Journal of wind engineering and industrial aerodynamics 90, 818-832(2010)
Design and construction of offshore anemometer tower for xiangshui wing farm， Water resources and hydropower engineering.Vol 40, No 9, pp81-87(2009).

Operational Mathematic model of Reverse Osmosis Membrane Module Rui Liu1, a, Hao Luo2, b 1Department of Civil Engineering, Tianjin institute of Urban construction, Tianjin, China, 300384 2Siemens Water Technologies and Engineering (Tianjin) Co., Ltd.
That model show the water and salt flux produced by pressure deference and salt deference similar. 1.2 Operational mathematic model of membrane module From engineering calculations concept, when the model describe the operational principle of every membrane module in a reverse osmosis system, the average hydraulic and mass parameter of feed and concentrate port of module can be used to represent the average of whole module.
From the angle of error analysis, the length of membrane module is only 1m, using the average of feed and concentrate port to instead of apparent parameter of module can be accepted by the error grade of engineering calculation.
In Chinese [4] Dong Zhao Jun, System Engineering and operations research [M], National Defense Industry Press, 2003.

Structure Topology Optimization of the Spindle Box of a Machining Center Ziliang Zhou1, a, Jian Song2, b and Ming Cong2, c 1Dalian Machine Tool Group Corporation, Ltd Dalian, China 2School of Mechanical Engineering Dalian University of Technology Dalian, China aziliangzhou_dmtg@163.com, bsongjiandlut@163.com, ccongm@dlut.edu.cn Keywords: high speed machining center; spindle box; topology optimization; uncertainty of loads; upper bound of cutting force Abstract.
References [1] Koetsu Yamazaki, Ryouiti Itoh, Masato Watanabe, Jing Han, Sadao Nishiyama, Journal of Food Engineering 81(2) (2007) 341-346
Botkin, Engineering with Computers 18(2) (2002) 109-115
[4] Ming Cong, Bo Fang, Ziliang Zhou, China Mechanical Engineering 19(2) (2008) 208-213, In Chinese
[6] Shilin Dong, Yang Zhao, China Civil Engineering Journal 37(1) (2004) 7-12, In Chinese.

Research on Dimerization of Oleic Acid Catalyzed by Organic Montmorillonite Qiujie Yang1,a, Sihao Chen2,b, Chuanrong Liu1,c, Jihu Wang2,d, Jianzhong Lou3,e, Chao Zhou1,f, Tonghe Zhu1,g, Dapeng Huang1,h 1School of materials Engineering, Shanghai University of Engieering Science, Shanghai,China 2College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai,China 3North Carolina A&T State University aqjyang2012@126.com, bhaosihaosi@163.com, cliuchuanrong1314@163.com Key words: organic montmorillonite, oleic acid, Diels-Alder action, dimer acid Abstract.
Currently, dimer acid is mainly applied to machinery, automotive, electronics, chemical, paint, cosmetic, textile, printing, aerospace, civil construction, etc[[] B.
But rising the reaction temperature will lead to color deepened, polymer content increased, dimer acid content decreased[[] Javad Heidarian, Nayef Mohd Ghasem, Wan Mohd Ashri Wan Daud: Chemical Engineering Journal, Vol, 100（2004), p. 85. ].
Besides, this study was funded by China and Shanghai University Of Engineering Science graduate student research innovation project(2012yjs24).