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Introduction Among the most frequently used building materials one can primarily name silicate-based, particularly cement-based composites [1].
Thanks to their character and to the production technology, these traditional materials are very adaptable and utilizable for a wide range of applications.
[8] RILEM TC-50 FMC (Recommendation): Determination of the fracture energy of mortar and concrete by means of three-point bend test on notched beams, Materials & Structures, 18 (1985), 285–290
Alyamac, Determination of fracture parameters of concrete based on water-cement ratio, Indian Journal of Engineering & Material Sciences, 15 (2008), 14–22
H, Kang, Designing concrete mixtures for strength, elastic modulus and fracture energy, Materials and Structures, 26 (1993) 8, 443–452, doi: 10.1007/BF02472804.

Optimization of Drawbeads for Springback Based on RSM and NSGA- Lei Cheng1,a,Wei Zhang1,b , Baochun Lu1,2, HuiJun Gong1,Yongzheng Song2,3 1 School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, PRC 2Engineering Research center of Concrete Block Forming Equipment of Jiangsu, Nanjing, PRC 3NanTong Metal forming equipment Co.
To improve material flow of sheet metal, draw beads are used to prevent wrinkling and springback during deep drawing process.
The material properties of “S-Rail-08” are taken as follows: Young modulus E=69GPa, Poisson’s Ratio υ=0.33, Anisotropy coefficient r0 = 0.74, r45 = 0.5, r90 = 0.67, Material density ρ= 2.7×103kg.m-3, Hardening exponent n=0.205.
Acknowledgements This research is supported by the science and technology research fund project programs of Jiangsu province (B2007047).
References [1] M .G .Lee: International Journal of Plasticity. 2009(25), p.339-419

Stress-strain curve of the material is selected as multi-linear and reinforcing model.
The material constitutive relation is shown in Fig. 4.
The material biting parts accomplish the installation and positioning of the workpiece.
Journal of South China University of Technology (Natural Science Edition). 2004, 32(4): 61～65
The Chinese Journal of Nonferrous Metals, 2005, 15(6): 860-864

Materials and Methods Materials Bamboo: Bamboo sheets used in the experiments are purchased in the market.
Immerse the charcoal in distilled water, boil in the heating furnace for 1 h, wash it with distilled water repeatedly to remove the ash material.
Journal of Safety and Environment (in Chinese), vol. 13 (2013), p. 171-175
Journal of Hazardous Materials, vol. 162 (2009), p. 1371-1378
China environmental science (in Chinese), vol. 27 (2007), p. 289-294

Besides the interferometric processing, radar images are the material for lineament analysis [8], where the structural elements of the relief are identified using their land surface expression on radar data.
All zones of a tectonic disturbance are modeled with the elastic-plastic Drucker-Prager material without hardening, the rest is modeled by a linear elastic material, elastic constants are given separately for each structural geological unit.
Further development of the methodology needs the refinement and detailed interpretation of satellite monitoring data and consideration of complex rheological behavior of a dam concrete [1718] and its foundation materials, as well as consideration of porous filtration processes in computational study.
Equation of state with consideration of softening of material (1999) Journal of Mining Science, 4, p. 32 [20] Adigamov N.S., Rudaev Ya.I.
Equation of state allowing for loss strength of material (1999) Journal of Mining Science, 4, vol. 35, p. 353-360

The table below shows the values ​​of TNT equivalent for some materials calculated on a basis of the heat of the explosion, pressure, and velocity of detonation.
In addition to the material description elastic-plastic model given by Johnson-Cook was used [10].
An integrated wave-effects model for an underwater explosion bubble.; 2002; Boulder [5] Barnat W., Wstęp do modelowania wybuchu podwodnego pod pojazdem gąsienicowym, Systems: Journal of transdisciplinary systems science, Oficyna Wydawnicza Politechniki Wrocławskiej 2012, Vol. 16, nr 3 [6] Grządziela A.
In: Journal of Kones, Vol. 18, No. 2, pp. 145-152; 2011 [7] Abaqus 6.10, PDF Documentation, Theory Manual, Simulia, Dassault Systems, 2010 [8] Reid WD.
The Response of Surface Ships to Underwater Explosions, Defence Science and Technology Organisation, Melbourne, 1996 [9] Johnson G.

Lin: China Journal of Chinese Materia Medica [in Chinese].
Dembitsky: Journal of Natural Products.
Tian: Journal of Shenyang Pharmaceutical University [in Chinese].
Lei: Journal of Wenzhou University·Natural Sciences [in Chinese].
Ma: Journal of Shenyang Pharmaceutical University [in Chinese].

Gao2 1 School of Mechanic Engineering, Harbin institute of Technology, Harbin, 150001, China, 2School of Mechanic Engineering, Harbin University of Science and Technology, Harbin 150080, China azyhit@163.com, bgdy192@163.com Keywords: Nano-hardness, Molecular Dynamics, Single Crystal Aluminum Abstract.
Nano-hardness is an important indicator of the material on nano scale, through measurement and analysis of nano-hardness, people can obtain a variety of other properties of the material indirectly, such as elastic modulus, yield strength, etc.
Meyer index, a constant depends on the material properties, for most of metals is concerned, n generally less than 2.
Hardness of the same experimental sample, if there are the same indentation angle, then the geometry is similar to, and the materials on the same stress state, thus the experimental results reflected the same nature of the materials, so the same hardness value.
Journal of materials Research, Vol. 10(4) (1995), p. 853

Effect of aging treatment on the microstructures and the magnetic properties of the sintered Nd-Fe-B magnet XiaoLi Wang 1, 3, a, liNa Zhao 1,b, CongHui Si 1,c, KaiHong Ding 2, d, ShengLi Cui 2, e, YongCong Sun 2, f, MuSen Li 1, g * 1Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan Shandong 250061, China; 2 Yantai Shougang Magnetic materials Inc, Yantai Shandong 265500, China 3 Institute of materials, Jiangsu University of science and technology, Zhenjiang Jiangsu 212003, China ahappysmile555@yeah.net, b1185706011@qq.com, c1045773764@qq.com dkhding@ysm.com, eslcui@ysm.com.cn, fycsun@ysm.com.cn, gmsli@sdu.edu.cn *Corresponding author: Li Mu-sen, Professor, E-mail: msli@sdu.edu.cn Keywords: Aging; Sintered Nd-Fe-B magnet; magnetic property; Microstructure Abstract：The effect of aging processes on the microstructures and the magnetic properties of the sintered Nd-Fe-B magnet was investigated.
Materials and methods The sintered cylinder of Nd-Fe-B permanent magnet with the serial number of N38SH and the size of Φ10mm×8mm was used in this study.
To improve the magnetic properties the materials were annealed in vacuum.
Acknowledgments This work was supported by the national major special project for the rare earth and rare metallic materials with the project approval document number: (2012) 1743.
Journal of Magnetism and Magnetic Materials, 313 (2007):337-341

From all kinds of processes, concerning the materials used, polymer printing is the most accessible.
As plastic materials are much cheaper and not very difficult to use compared to other materials, especially metals, nowadays plastic 3D printing is widely spread around the world.
Fig.1. 3D printer used for the tests Printing Materials Characteristics The material used for analyzing the test faults was mainly PLA (Poly Lactic Acid) but also ABS (Acrylonitrile butadiene styrene).
Popa, Studies about virtual behavior of tibia fractures and nails during the fixation process., Journal of Industrial Design & Engineering Graphics 8 (2) (2013) 5-10 [2] B.
Berman, 3-D printing: The new industrial revolution, SciVerse Science Direct, Business Horizons, 55 (2012) 155-162 [3] N.