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The corrosion of structure material caused by ocean environment, fatigue damage, crack propagation and material aging arose from environmental fatigue loads will not only decrease the material strength and member resistance but also change their statistic characteristics.
Journal of Offshore Mechanics and Arctic Engineering, 2004, 126(4):331-336
Journal of Offshore Mechanics and Arctic Engineering, 2000, 122(1): 20-32
Beijing: Science Press, 2003

The finite element program ANSYS7.1 considering the material non-linear and geometry large deformation is used to simulate joints.
The design bending stress of the beam-to-column joint and connection shall satisfy the following: （1） Where σ－ bending stress of welds of column face and beam of reduced zone of RBS joints considering combination of seismic action for connection and joint respectively, Mb－design bending moments of welds of column face and beam of reduced zone of RBS joints considering combination of seismic action for connection and joint respectively, Wnx－net section modulus of weld of column face and beam of reduced zone of RBS joints respectively, f － design value of material strength of steel, γRE －seismic adjusting factor for load-bearing capacity，0.9 and 0.75 for connecting weld of column face and beam of reduced zone of RBS joints respectively according to reference [1,10,11]. 2) Bending bearing capacity of beam-to-column joint and connection under rarely earthquake.
Conclusion The non-linear finite element models were established to analysis concrete-filled steel square tubular column and reduced steel beam with circular and long-circular hole in web, considering geometric large deformation and material nonlinear.
Journal of Building Structures (in Chinese), Vol. 25(3) (2005), p.9-16
Journal of Xi’an University of Science & Technology (in Chinese).

The monitoring web terminal can clearly know the status of materials in the warehouse, production line, and workshop, including what items is full, supplement required, urgent to supplement, or empty and master the whole production status of the enterprise, including material flow, production flow, and information flow.
Acknowledgements This work was financially supported by the NSCF (No. 50805089) and Shanghai Science and Technology Committee (No. 11510500400).
Jiang: International Journal of Advanced Manufacturing Technology, Vol. 36 (2008), pp. 752-764
Jiang: Journal of Intelligent Manufacturing, Vol. 19(2008), pp. 701-713

Experiment Materials.
The bending resistance of paperboard is basic to most of the uses to which this material is put.
[5] Asakura, Kazumichi; Iwamoto, Masao; Isogai, Akira, Effects of fatty acid components present in alkylketene dimer (AKD) wax on emulsion stability and paper sizing performance, Journal of Wood Chemistry and Technology (2005), 25(1-2), 13-26
[6] Yamamoto, H., Kitaoka, T., Tanaka, H., Surface characteristics and sizing response of paper sheets sized by anionic emulsion of fatty acids, Journal of Pulp and Paper Science (2004), 30(5), 136-140

Except the high strength bolts, the material was Q345-B steel whose yield stress (fy) and elasticity modulus (E) were 345MPa and 2.06x105MPa respectively.
All the materials were simplified to have idealized elastic-plastic stress-strain relationships.
[2] Henghua Wang: Building Science.
[3] Henghua Wang: Journal of Building Structures.
[5] Korol R.M., Ghobarah A., Mourad S.: Journal of Structural Engineering.

The initial materials are usually of the same type or small in number, which are simple and easy to synthesize.
Outstanding properties of carbon materials serve as good take-off for nano-engineering.
Living tissues can be thought of as active materials.
It is probable that development of simple active materials, which can change only one or two of their properties, will be the first step in making artificial active materials.
But later on, by means of nanorobots active materials capable of complex adaptation will be constructed.

Microstructure and Texture Evolution of 2024 Aluminum Alloy Sheet under Different Loading Conditions Peng Zhou1,a, Lei Deng1,b and Xinyun Wang1,c* 1State Key Laboratory of Materials and Die & Mould Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, 430074 Wuhan, Hubei, China azhoupeng_peng@hust.edu.cn, bdenglei@hust.edu.cn, c*wangxy_hust@hust.edu.cn Keywords: 2024 aluminum; tension and compression; ODFs; texture Abstract.
Experimental Setup Material preparation.
Material used in this study was 5 mm thick 2024 aluminum alloy rolled sheets.
Acknowledgments The research was financially supported by the National Natural Science Foundation of China (No.51435007).
The authors are also grateful for the technical assistance from the Analytical Platform of the State Key Laboratory of Materials Processing and Die & Mould Technology.

Effect of Chemical Composition on the Properties of Reconstructed Steel Slag Ying Xu1,a, Qiao-Ling Wang1,b, Chen-Guang Hu1,c and Shan-Shan Yang1,d North China University of Science and Technology, College of Material Science and Engineering Tangshan, China axuying9940@126.com; b965655590@qq.com; chuchenguang00ts@163.com; d623552794@qq.com Keywords: reconstruct steel slag, adjusting components, cementitious activity, volume stability Abstract.
Experiment Experimental Materials.
Table 1 Chemical composition of raw materials Name CaO SiO2 Al2O3 Fe2O3 MgO K2O FeO Others Steel slag 41.40 14.96 0.84 7.90 5.49 0.12 13.53 15.76 Cement 62.60 21.35 4.67 3.31 3.08 0.54 — 4.45 Quicklime 94.45 — — — — — — 5.55 Fly ash 6.82 51.41 26.74 5.29 0.87 1.18 — 7.69 Slag 38.20 28.64 14.60 0.42 10.82 0.44 — 6.88 From Table 1, the contents of CaO, SiO2 and Al2O3 in the original steel slag are not as high as those in cement, the content of CaO in steel slag is about 40%, the content of CaO in cement is about 62%, the content of SiO2 in steel slag is about 15%, the content of SiO2 in cement is about 22%, the content of Al2O3 in steel slag is only 0.84%, and the content of Al2O3 in cement is about 5%.
Journal of Wuhan University of Technology, 2014, 29(5): 966-971
Modification of steel slag powder by mineral admixture and chemical activators to utilize in cement-based materials.

Two different material convert into a single material to calculate on the premise that two material correspond Principle of equivalent stiffness.
To the composite beam which is poured concrete in the U section steel beam, we assume that steel and concrete materials are both ideal linear elastic.
We ensure that the concrete slab and steel beam works together perfectly ,so as to U section steel and concrete in it .So promised that the area and Stiffness of concrete are converted to the area and Stiffness of steel , we should also take the section conversion of concrete poured into U section steel and U section steel beam in to consideration . =, the following formula are derived according to the material mechanics formula (1) which, is the distance between centroid of composite section and bottom slab of U section steel (Fig. 8).
Acknowledgements: This paper is Sponsored by the important science and technology foundation of Shandong province, Grant No.[2005GG21006001 ], the science and technology plan of Education Department of Shandong province[2007] and middle-aged and young scientists incentive fund of Shandong Province, No.[2004BS04012].
[6] Yue Shi, Xiamin Hu, Min Jiang Calculatin and analysis of deflection of part steel-encased beam[J]. the Harbin Institute of Technology journal，2007，8（39）PP.304-307, In Chinese

In terms of the ultimate strength of steel material, it is the most advanced.
Material parameters The material parameters are shown in Table 1.
Acknowledgments This work is supported by The Innovation Team and Bud plan of Beijing Academy of Science andTechnology.
References [1] Zhang Xi,Wang Chunxu,Shi Qingnan.Technological Situation of Steel Wire for Steel Cord of Radial Tire[J].Journal of Iron and Steel Research,2007,19(1):1-5
Wuhan university of science and technology: Wuhan, China, 2011, pp. 23-25