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In the model shown in Figure 1, the parameters of substrate as follows :E=200GPa, Poisson's ratio =0.29 [9], The material parameters of the TiN coating [10] are as follows: elastic modulus E=590GPa, Poisson's ratio =0.21; The following [9] diamond material parameters: elastic modulus 1140GPa, Poisson's ratio is 0.007, the hardness is 80 GPa, alternative analytical rigid body in the simulation.
The Hertzian contact cracks show that single material contact crack first appears in the contact surface, and then, the crack will extend to the contact body.
Keer: Journal of Tribology, Vol. 24 (2011) No.3-4, p.14-19
Jiang: Mechanical Science and Technology for Aerospace Engineering, Vol. 29 (1994) No.7, p.940-944
Wang: Journal of Zhejiang University (Engineering Science), Vol. 38 (2004) No.5, p.621-624.

A Numerical Model for Evaluating the Casting Complex Degree Shiping Wu 1, a, Qin Xu 1,b, Xiang Xue 1,c and Guangran Wu2,d 1School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China 2Shoudu Space Machinery Company, Beijing 100076, China aspwu@hit.edu.cn, bxuqin_hit@163.com, cxxue@hit.edu.cn, dsmart_78@163.com Keywords: Castings; Tissues; Complexity Degree; Quantitative Description; Surface Modulus.
ACKNOLEDGEMENT The authors would like to thank the National Natural Science Foundation of China (Grant No. 50775050) and the State Key Laboratory of Solidification Processing in NWPU (200702).
STRAFFORD, Journal of Material Processing Technology, 38(1993)303-326
Zhang, The Theory of Composing, University of Science and Technology of China Press, Hefei, 2003 (in Chinese) [13] X.
Zhang, JOURNAL OF HECHI NORMAL COLLEGE, Vol. 24, 2004, pp.81-85 (in Chinese) [14] W.B.

Methodology Materials.
Khayat: ACI Materials Journal Vol. 96 (1999), p. 346
Chindaprasirt: Construction and Building Materials Vol. 23 (2009), p. 2641
Tantiwitayawanich, in: Proceedings of the 4th Thailand Materials Science and Technology Conference, Pathumthani, Thailand (2006), p. 1
[14] ASTM C 1611/C 1611M, in: Annual Book of ASTM Standards,Vol. 04.02, American Society for Testing and Materials, Philadelphia, USA (2006)

Technology of Electrochemical Micromachining Based on Surface Modification by Fiber Laser on Stainless Steel Xiaohai Li1,a*, Shuming Wang2,b and Beibei Xue1,c 1School of Mechanical Engineering, Jiamusi University,Jiamusi, Heilongjiang 154002, China 2School of Materials Science and Engineering, Jiamusi University, Jiamusi, Heilongjiang 154002, China ali_xh@jmsu.edu.cn, bwsmwsm2000@163.com, c2753640892@qq.com Keywords: fiber laser, electrochemical machining, micro-machining, masking, 304 stainless steel Abstract.
Introduction With the development of science and technology, micro metal parts will play an important role in military, aerospace, medical, mould and other fields in the future.
By sudden metal melting, microstructures of grains become fine, which can improve the properties of metallic materials [7-8].
Acknowledgements This project is supported by the National Natural Science Foundation (Grant No.51375208) and the Technology Innovation Team Foundation of Jiamusi University(Cxtdpy-2016-04).
References [1] Trimmer Andrew L, Hudson John L and Kock Matthias: Applied Physics Letters Vol.82(2003), p. 3327 [2] Kock M, Kirchner V and Schuster R: Electrochimica Acta Vol.48(2003), p.3213 [3] YU Qia, ZHU Di and ZENG Yongbin: Acta Aeronautica ET Astronautica Sinica Vol.33( 2012), p.1 [4] SUN Shufeng, WANG Pingping and XUE Wei: Journal of Mechanical Engineering Vol.47(2011), p193 [5] Zhang Chaoyang, Fen Qingyu and Zhou Jianzhong: Chinese Journal of Laser Vol.42(2015), p. 1 [6] Pajak P T, Desilva A K, Harrison D K: Precision Engineering Vol.30(2006), p288 [7] BAI Xinde, XU Jian, FAN Yudian: Journal of T singhua University (Sci&Tech) Vol. 27(1998), p65 [8] Styer P, Valette.

Experiment Research on Basic Mechanic Property of Recycled Concrete with Different Ratio of Recycled Aggregate Yuedong Sun a , Xiang Xiao b Shandong Provincial  Key  Laboratory  of  Civil Engineering Disaster Prevention and Mitigation (Shandong University of Science and Technology), Qingdao 266510 ,China asunyd1236@126.com, bgudi521@163.com Key words: Different ratio, Recycled aggregate, Recycled concrete, Compressive strength, Elastic modulus.
The proportion design of recycled aggregate concrete is shown in Table 2, Material consumption is shown in Table 3.
Journal of North China Institute of Water Conservancy and Hydroelectric Power, 1998,19(2), p. 30-32
Journal of Tongji University, 2004(12), p.1558-1561
Journal of Shandong University of Science and Technology (Natural Science),2009(1), p25-29

Chongqing 401121, China. 3 Chongqing Institute of Safety Science And Technology, Chongqing 401331, China.
Material Model and State Equation 1.1 Explosive Material Model High-energy explosive is used and described as material model MAT_HIGH_ EXPLOSIVE_BURN and the JWL equation of state.
For actual modeling, the explosive, air and other fluid materials are defined as Euler grid, while the pipelines and foundation materials belongs to Lagrange grid. 3 Calculation Results and Analysis To know the response law of buried gas transmission pipelines under explosive shock load, pipelines subject to explosive shock under three working conditions are analyzed.
Acknowledgements The research reported in this paper has been funded by the Science and Technology Research Project of Chongqing Education Committee (KJ131408);the Interior Research Foundation of Chongqing University of Science & Technology (CK2011B30);Innovative Team of Safety Risk Control Engineering Foundation of Chongqing University of Science & Technology；the National Natural Science Foundation of China (No.51104176),The authors thank very mush the reviewers for their constructive comments.
Chinese journal of computational mechanics,1997,14(1): 91-102

By use of material fatigue feature curve in combination with the stress-time history, the fatigue life of system components is studied.
According to the characteristic of the curve and the material feature, a damage computing method can be selected.
In this case, the erecting arm has the feature of big size, and a large number of weld lines, and the material is 25CrMnSiA high quality low carbon alloy steel.
Beijing：Science Press.2006 [2] Huang Huaide.
[3]Co-simulation of Flexible Body Based on ANSYS and ADAMS, Journal of System Simulation, 2008:32(17)

The study in the toxic effects of the material bisphenol A at long time exposure Zheng-hua Duan1, a, Hua Wang 2, b, Xiaohao Zhang1, c, Ning-tao Li 2, d* 1.
School of Environmental Science and Safety Engineering, Tianjin University of Technology, Tianjin, 300384, China; 2.
Materials and methods Chemicals.
Fen and et al: Environmental Science (in Chinese), Vol. 31 (2010), p. 254-560
Yin: Asian Journal of Ecotoxicology Vol. 2 (2007), p. 25-31.

The structural response is also complicated by the use of advanced materials such as laminated composites and functionally graded materials (FGMs).
A thermo-mechanical analysis of beams made of isotropic, functionally graded and laminated orthotropic materials is presented in this paper.
Noda, Thermal stresses in functionally graded materials, Journal of Thermal Stresses, 22 (1999) 477-512.[9] A.
Reddy, A new beam finite element for the analysis of functionally graded materials, International Journal of Mechanical Sciences, 45 (2003) 519-539
Kelly, Thermal buckling and elastic vibration of third-order shear deformable functionally graded beams, International Journal of Mechanical Sciences, 53 (2011) 734-743

Other than that, HAp can be prepared by many techniques using various starting materials.
Shen, Materials Science and Engineering C, Vol 34, (2012), p. 1674–1681
Sorrell, Materials and Design, Vol 24, (2003), p. 197–202
Girija, Materials Letters, Vol 76, (2012), p.198–200 [6] S.
Khor, Materials Processing Technology, Vol 69, (1997), p.75-78