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It is thus of some interest to understand the dynamic behavior of masonry materials under dynamic loading.
Based on the constitutive relations of the brick and the mortar materials, the equivalent stress-strain relations of the RVE are homogenized by applying various compatible displacement conditions on the RVE surfaces.
They are defined as and (3) in which and are damage parameters that control postfailure stress-strain relations of materials in tension and compression.
Niu: International Journal of Solids and Structures, Vol. 29(5) (1992), p.531-546
Gusella: International Journal of Solids and Structures, Vol. 41 (2004), p.1911-1923

The metal materials play important roles in the area of the industry.
As we all known, the structure of the materials’ organization affect the using properties directly.
In the condition of active service, most materials losing efficacy begin on the surface.
Comparing with the common materials with coarse grain, the nano materials are with super high strength, super high hardness, good ductility and other excellent properites.
B Wang., J Lu., K Lu: Science, Vol. 16. (2010), p.90 (in Chinese) [13] Yu Wang, Min Huang, Huilin Gao, Xianghong Lv: Materials for Mechanical Engineering, Vol. 33. (2009), p.51 (in Chinese) [14] Jiang Yin Translat: Heat Treatment, Vol. 19. (2004), p.49 (in Chinese) [15] Aiqiang Lv: Chinese Journal of Materials Research, Vol. 19. (2005), p.118 (in Chinese)

Manufacturing of Light Weight Aggregates from the Local Waste Materials for Application in the Building Concrete Tomasz Pawlik*1,a, Daniel Michalik1,b, Malgorzata Sopicka-Lizer1,c, Marcin Godzierz1,d 1Silesian University of Technology, Department of Material Science, ul.
The physical properties of waste materials are shown in Tab. 1.
Ruebner: Construction and Building Materials. 98 (2015) 376-387 [2] S.
Brötz: Construction and building Materials. 85 (2015) 22-29 [3] Tommy Yiu Lo, Hongzhi Cui, Shazim Ali Memon, Takafumi Noguchi, Journal of Cleaner Production. 112 (2016) 753-762 [4] V.
Sopicka-Lizer: Inzynieria Materialowa/Materials Engineering 211 [3] (2016) 131-136 [8] P.

With the continuous development of Chinese science and technology, structured ultra-light porous metal materials are a new type of multifunctional materials that have emerged with the increasing demand for diverse materials preparation and machining technologies in recent years.
Porous metal materials are materials that are good for the environment.
In addition, with the rapid development of science and technology, we have more scientific and technological means, and thus have greater ability to develop and research new materials.
Science & Technology Innovation and Application, 10,12,2017, pp. 124-126
Challenge and Development of Journal of Composite Materials, 3,12,2017, pp. 336-338.

Mixed-Mode Crack Propagation in Functionally Graded Materials Jeong-Ho Kim 1,a and Glaucio H.
These materials have been introduced to take advantage of ideal behavior of material constituents.
Tina Panontin), and the National Science Foundation (NSF) under grant CMS0115954 (Mechanics and Materials Program).
Shemilt: Journal of Materials Science Vol. 36 (2001), p. 1077
Kim: Mixed-mode crack propagation in functionally graded materials, Ph.D.

A Model for the Hysteresis Curves of Soft Magnetic Materials Fernanda A.
Materials with higher density have steeper curves.
Atherton: Journal of Magnetism and Magnetic Materials Vol. 61 (1986), p. 48
Collocott: Journal of Magnetism and Magnetic Materials Vol. 323 (2011), p. 2023
Gilbert, S.Bull and T.Evans: Journal of Materials Science Vol.39 (2004), p.457

Nanometer materials and their application technology as an important part of nano science and technology, is considered to has a decisive role to the development of contemporary science and technology.
In order to promote the development of nano science and technology, in July 1990 in the United States in Baltimore held the first international conference of nanotechnology, and announced that "nanotechnology" the international journal.
Nanometer materials.
Countries engaged in materials science experts and scholars are desire to develop new nano materials (especially the nano composite material), seeking for new technology of the preparation of new nano materials, to further explore the particle size of nanometer material, the amount of phase interface, the interface phase relationship between atomic structure and nanometer material performance, and the diffusion process of nanometer materials, the formation mechanism of nanocrystalline ceramics (especially the reticular formation) for further research.
Advanced materials, 1992; 4 (7-8) : 474-481

The elastic properties of two carbon-containing materials are investigated.
Both materials have unique physicomechanical properties.
Such materials include isotropic pyrolytic graphite and shungite rocks.
Key Engineering Materials. 722 (2017) 247-253
Materials Science and Engineering: A.Vol. 430 (issues 1-2) (2006) 189-202

Effect of Crack Statically Growing on Stress and Strain at Crack Tip for Power Hardening Materials He Xue 1, a, Min Qiao 1,b , ZhenWen Wang 1,c , XiaoYan Gong 1,d 1 School of Mechanical Engineering, Xi’an University of Science and Technology, 710054, China axue_he@hotmail.com, bqiaom_1989@163.com, c2007.wzw@163.com , dgongxymail@163.com Keywords: crack statically growing; residual plastic strain; power hardening materials; elastic-plastic finite element Abstract.
Numerous austenitic stainless steels and nickel-based alloys are power hardening materials, which is widely used in key structural materials of nuclear power plants.
Therefore, the re-distribution of stress and strain at the growing crack tip in power hardening materials will be discussed by using ABAQUS software in this paper, which provides a foundation for quantitative predicting environmentally assisted cracking growth rate in key structural materials of nuclear power plants.
The numerical simulating test process satisfied American Society for Testing and Materials (ASTM) E399 standards.
Acknowledgement This work was financially supported by the National Natural Science Foundation of China(11072191) References [1] HAN E H, WANG J Q, WU X Q: Acta Metallurgica Sinica Vol.46 (2010),p.1379 [2] CHOPRA O K, CHUNGA H M, KASSNER T F: Nuclear Engineering and Design Vol. 194 (1999),p.205 [3] GUAN Y X, Dong C F, LI Y: Science and Technology Review Vol. 29(2011),p.17 [4] PENG Q J, KWON J, SHOJI T: Journal of Nuclear Materials Vol. 324 (2004),p.52 [5] HALL JR M M: Corrosion Science Vol. 50(2008),p.2902 [6] SHOJI T, LU Z P, MURAKAMI H :Corrosion Science Vol. 52(2010),p.769 [7] XUE H, SHOJI T: Transactions of the ASME-Journal of Pressure Vessel and Technology Vol. 129(2007),p.254 [8] XUE H, ZHAO D, PENG Q J: Journal of materials Vol. 5(2011),p.18 [9] XUE H, LI Z J, LU Z P: Nuclear Engineering and Design Vol. 241(2011),p.73 [10] XUE H, OGAWA K, SHOJI T: Nuclear Engineering and Design Vol. 236(2009),p.628

Application of Composite Materials in Ball Sports Equipments Changwu Huang Physical Education Institute, Hunan University of Technology, China changwuhang@yeah.net Keywords: Equipment Materials, Composite Materials, Ball Games, Matrix Index Abstract.
By means of its outstanding performance, Bayer Material Science takes lead in the field of ball innovation.
Moreover, the materials turn to the composite materials continuously in property [5].
Rare Metal Materials and Engineering, 2002, (6)
Journal of Chengdu Sports University, 2006, (05)