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According to the above analysis, the rise and fall of the material to the resonant vibration motivation working surface can be written as impact Among them:vm for when the material fell back to work surface of the vertical direction of speed; Δ t for materials and the impact of the work surface contact time; So the impact phase difference forΔφ = ω Δ t; The material fell back to work the speed of the surface, the type (5) get: Among them: x2d apex geological work for material surface of vertical velocity component; x2z for material fall back to work on the direction of the surface geological vertical velocity component.
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Beijing: Science Press, 2007.

Friction and Wear Characteristics Cu-based P/M Brake Friction Materials with Addition of Fe and C 1,2,aR.J.
Introduction Powder metallurgy (P/M) friction materials are normally classified into three types; namely Cu-based, Fe-based and Cu-Fe-based materials [1].
Cu-based P/M friction materials were prepared and the effects of Fe and C friction components on the COF and wear behaviors of the materials were studied and discussed in this work.
Ariff, Wear Mechanism of TiN , TiAlN and TiCN Coated Drills During Drilling of Carbon Steel Journal of Physical Science, Vol 18(1) 2007, 75-85
Azhari, Microstructural characteristics on the surface and subsurface of semimetallic automotive friction materials during braking process Journal of Materials Processing Technology 140 (2003) 694–699

Cohesive Zone Damage-Healing Model for Self-Healing Materials Rashid K.
Several attempts were made to model self-healing materials [5-7].
Solomon, "Self-healing polymeric materials: A review of recent developments," Progress in Polymer Science, vol. 33, pp. 479-522, 2008
Wudl, "A Thermally Re-mendable Cross-Linked Polymeric Material," Science, vol. 295, pp. 1698-1702, 2002
Masad, "A micro-damage healing model that improves prediction of fatigue life in asphalt mixes," International Journal of Engineering Science, vol. 48, pp. 966-990, 2010

However the strength of the materials will drop a lot accordingly [6-8].
Ilieva: Journal of Cellular Plastics Vol. 45 (2009), p.17-32
Gun’ko, I.F.Mironyuk, V.I.Zarko, E.F.Voronin, and V.V.Turov: Journal of Colloid and Interface Science Vol. 289 (2005), p.427-445
Testing Method of Static Compression for Package Cushioning Materials.
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Experiment Materials.
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Recently, ECAP has been considered as one of the most powerful methods to fabricate bulk UFG materials, including Al, Mg, Ti alloys and their powder materials [3-5].
[3] Valiev R.Z. and Langdon T.G. (2006) Principles of equal-channel angular pressing as a processing tool for grain refinement, Progress in Materials Science, 51(7): 881-981
[4] Karaman I., Haouaoui M. and Maier H.J. (2007) Nanoparticle consolidation using euqal channel angular extrusion at room temperature, Jouranl of Materials Science, 42(5), 1561-1576
[8] Wang Q. and Lu X.L. (2006) Numerical algorithm of discrite element method, Journal of Tong Ji University (natural science), 34(12): 1573-1577
[9] Li P., Wang X. and Xue K.M. (2013) Multi-scale study of pure molybdenum powder material in tubes during equal channel angular pressing, Materials Science and Engineering of Powder Metallurgy, 18(3), 452-458

Theoretical Introduction of Nanostructured Titanium Oxide Nanostructured materials refers Nanostructures accumulate a certain way or at a certain matrix dispersed form macroscopic materials, including Nanostructured powders, Nanostructured thin film materials, Nanostructured materials.
Properties of Nano-TiO2 Textile Materials For the nature of TiO2 materials synthesis, modification and applications, people have done extensive research.
Fig.2 shows the properties of Nano-TiO2 textile materials [4].
Journal of Colloid and Interface Science, 2008, 322(1): 128-135
Journal of Photochemistry and Photobiology A: Chemistry, 2009, 203(2-3): 192-198

Lu Jingjing et al had studied the work that the preparation of graphene / chitosan composite film materials and the nonlinear optical limiting effect of the composite.
[4] Lu Jingjing, Feng Miao,Zhan Hongbing the preparation and research of nonlinear optical limiting effect of Graphene/chitosan composite film materials[J].Journal of Acta Phys.
[7] Wu xinhua.The preparation and property study of Chitosan, chitosan/graphene oxide porous materials[D],Tianjin:Tianjin University,2009
Journal of Shanghai University (Natural Science), 2013,19(4): 400–404
Chemical Journal of Chinese universities, 2013,34(3):692–697

Introduction The mechanical behaviour of materials is a function of strains, strain rates and temperatures.
The Johnson-Cook (J-C) model has enjoyed great popularity among the workers in the field of high velocity impact and dynamic response of materials due to its simplicity and ease of determination of the material constants.
Constitutive equations for elastic-viscoplastic strain-hardening materials.
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Experimental Materials.
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Journal of Daqing Normal University, Vol. 29 (2009), No. 6, P. 114 (in Chinese) [15] R.
Journal of the Chinese Ceramic Society, Vol. 36 (2008), No. 3, P. 391 [16] Y.
Petroleum Science, Vol. 8 (2011), No. 8, P. 207