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The same material and properties were selected for the pinion.
The material selected was steel with modulus of elasticity (E) of 210 GPa and Poisson's ratio of 0.3, the contact property has a tangential behavior with a coefficient of friction 0.2.
Brown, Gear Stress Reduction Using Internal Stress Relief Features, Journal of Mechanical Design 119 (1997) 518-521
Spitas, Increasing the Strength of Standard Involute Gear Teeth with Novel Circular Root Fillet Design, American Journal of Applied Sciences 2 (2005) 1058-1064
Icard, Analysis and Optimization of the Loaded Meshing of Face Gears, Journal of Mechanical Design 127 (2005) 135-143

(1)Surface layer and base road are homogeneous and isotropic linear elastic material composition, they obey Hooke's law, subgrade and foundation are the ideal elastic-plastic material and in line with the Mohr coulomb's law
Chinese Journal of Rock Mechanics and Engineering, 2009(11): 2208–2214.
Journal of Jiangsu University, 2008,29(3):264-268.
Journal of southeast university (Natural Science Edition), 2007,37(5)：921-925.
Journal of Engineering Mechanics,1998, 124( 9): 1010- 1017

A huge volume of literature exists on the rate-dependent mechanical properties of a variety of polymers, including the energetic materials.
His results indicated that the rate of compressive loading had a strong effect on damage evolution in RDX-HTPB composite materials.
Experimental Part Materials and sample configuration.
Defemce Science Journal, 2011, 61(6): 529-533
Journal of Composite Materials, 2015, 49(4): 425–438.

Specimen Preparation and Testing Arrangment Materials and Mix Proportion.
Acknowledgment This work is supported by the National Science and Technology Supporting Plan of China under grant 2008BAE61B05.
Patel: ACI Materials Journal Vol. 89 (1992), p. 541 [2] V.
Qiao: International Journal of Damage Mechanics Vol. 17 (2008), p. 363 [3] H.
Materials and Structures Vol. 35 (2002), p.579 [7] J.

Introduction CDA as one of cellulose derivatives, have been widely applied as the materials of CDA fibers for cigarette filter and textile due to its properties of precision filtration and moisture absorption.
Experiment Materials.
[2] Wee, W.K., Mackley, M.R., Chemical Engineering Science, 1998. 53(6): p. 1131-1144
Journal of the American Chemical Society (2002). 124:4974
[4] Kosan, B., et al., Macromolecular Materials And Engineering, 2010. 295(7): p. 676-681

Experimental Procedure Erichsen Cupping Test. 1) Materials and Test Equipment.
Table 1 lists the sheet materials used in the study and their mechanical properties.
Journal of materials processing technology Vol.196 (2008), p. 205-212
The Chinese Journal of Nonferrous Metals Vol. 15(2) (2005), p. 184-191.
Journal of Plasticity Engineering Vol. 15(6) (2008), p. 1-3.

However the improvements of coefficient of performance of mine fans are little because they are hindered by theories and material science, et al.
Journal of Anhui University of Science and Technology (Natural Science), Vol.13, p. 27
Journal of Hunan University of Science & Technology (Natural Science Edition), Vol.17 (2002), p. 9
Journal of University of Shanghai (Science and Technology), Vol.4 (1982), p. 1
Journal of Hunan University (Natural Science), Vol.44 (1999), p. 90

The steel tube is welded tube, and the steel material is Q235.
(in Chinese) [2] Omar Chaallal and Mohsen Shahawy: Structure Journal, Vol. 97 (2000), p. 659
[3] Han Linhai: Concrete Filled Steel Tubular Structures (Science Press, Beijing 2000).
Elsevier Science LTD, England (2005)
[7] Wang Qingli, Tan Pengyu and Wei Suhua: Journal of Building Structures, Vol. 29 (2008), p. 67.

Motivated by these applications, open and closed-cell metal foams of different densities, cell sizes, and materials have been studied [1].
Selection of constituent materials is an important part of designing syntactic foams, where strength, modulus as well as density can be optimized [4].
Calculation Model The Al alloy/SiChs composite materials are prepared by a pressure infiltration method.
Fig.1 (a) shows a typical representative section recorded of the composite materials [6].
Fang, FEM for brake discs of SiC 3D continuous ceramic reinforced 7075 aluminum alloy for CRH3 trains applying emergency braking, Applied Mechanics and Materials. 120 (2012) 51-55

New materials can be used for the improvement of indoor electromagnetic environment and pollution control. 1.
Foam cement is a new type of thermal insulating building materials, it is widely used in indoor buildings decoration.
Conclusions By the double-matching design, can greatly expand the absorption bandwidth, develop new materials application.
(in Chinese) [4] Adam J.Douglas,Davis Lionel E,etc, Ferrite device and materials.IEEE Transaction Microwave Theory and Technology ,2002,50(3):721-724 [5] Wang S H, Wen F and Hao W J,Electromagnetism Pollution and Protection Materials for Electromagnetic Radiation, Environmental Science and Technology, 2006.12(29): 96-98 [6] Y.
[10] J.J.Chen, ,X.L.Zhao,W.J.Hao and Y.F.Zhang, The broadening design and preparation of S band gypsum absorber, Journal of Building Materials, Vol.14,No.5,2011,10：675-679 [11] ENTOU T, Research of EM Wave absorber of gypsum boards type in C band EMCJ,2002,33:19-24 [12] J.J.Chen, W.J.Hao and Y.F.Zhang, Stretching Design For Plasterboard Of λ/4 Type EMW Absorber.