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Elms, Indentability of Conventional and Negative Poisson's Ratio Foams, Journal of Composite Materials, 27(12) (1993) 1193-1202
Yang, Review on Auxetic Materials, Journal of Materials Science, 39(10) (2004) 3269-3279
Lakes, Design Considerations for Materials with Negative Poisson’s Ratios, Journal of Mechanical Design, 115(4) (1993) 696-700
Smith, Stiffness and Energy Dissipation in Polyurethane Auxetic Foams, Journal of Materials Science, 43(17) (2008) 5851-5860
Prawoto, Seeing Auxetic Materials from the Mechanics Point of View: A Structural Review on the Negative Poisson’s Ratio, Computational Materials Science, 58 (2012) 140-153

Experimental System and Materials The DRS-1 high normal stress direct and residual shear apparatus which was developed by state key lab for geomechanics and deep underground engineering is used to study the mechanical characteristics of the experimental materials as shown in Fig.1.
(a) (b) (c) (d) Fig. 2 Experimental materials Analysis of experimental results (a) =0.4MPa (b) =0.8MPa (c) =10MPa (d) =12MPa Fig. 3 Shear stress curves of different granular materials under different normal stress condition Shear Stress Analysis of Different Experimental Materials.
The difference of macroscopic behavior of the materials is mainly because of the change of the microstructure.
The Fig.4 indicates that the volume strain of the experimental materials is different obviously under different normal stress condition.
Acknowledgements This work was financially supported by the National Natural Science Foundation (50974117).

Introduction The properties and behavior of materials at the nano-scale magnificently vary comparing with same materials at the micro and macro scales.
As sizes reduce into the nano-scale, materials show peculiar and interesting changes in their electric, optical, magnetic and chemical properties [1].
Sasaki, N.Koshizaki, Preparation of zinc oxide nanorods using pulsed laser ablation in water media at high temperature, Journal of Colloid and Interface Science 300 (2006), p.612–615
Husein, Erhan Akman and Arif Demir, Synthesis of Zirconia Nanoparticles in Distilled Water Solution by Laser Ablation Technique, Journal of Materials Science and Engineering B 3 (6) ( 2013), p.364-368
Baladi, effect of laser wavelength and ablation time on pulsed laser ablation synthesis of al nanoparticles in ethanol, 2nd International Conference on Ultrafine Grained & Nanostructured Materials UFGNSM) International Journal of Modern Physics: Conference Series Vol. 5 (2012), p.58–65

Based on the above review, the EDM process parameters strongly depend on workpiece materials, and machining condition needs to be determined for specific workpiece material.
UK) machine with electrode materials of copper and dielectric fluid of HD-1 oil.
Journal of materials processing Technology, 2001. 115(3): p. 344-358
Journal of Environmental Science and Engineering B, 2017. 6: p. 387-390
Materials Research Express, 2019. 6(8): p. 086507

Hu: Journal of University of Science and Technology Beijing, 33-6(2011), 762-765 (In Chinese)
Hu: Journal of University of Science and Technology Beijing, 30-4(2008), 432-435 (In Chinese)
Pater: Journal of Materials Processing Technology, 173(2006), 201-208
Samolyk: Journal of Materials Processing Technology, 164-165(2005), 1235-1240 [11] B.
Hu: Journal of University of Science and Technology Beijing, 32-5 (2010), 650-656 (In Chinese)

Acknowledgements This work is supported by the National Basic Research Program (973 Program) (2011CB707602) , the Key Program of National Natural Science Foundation of China and the program of National Natual Science Foundation of China (50975136).
Stanzl-Tschegg: Journal of Materials Processing Technology Vol. 170 (2005), p. 42–49 [3] J.
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Steel slag and fly ash were used as the major starting materials.
Experimental procedure Preparation of materials and thermal treatments.
In GC3 sample, the CaO/SiO2 was decreased within the starting materials.
Effects of rare earth tailing content on microstructures of glass-ceramics, International conference of advances in metallurgical progress and materials, Ukraine, (2007) [3] T Zhao, B W,Li Z Y Gao, et al. : Materials Science and Engineering B, Vol. 170 (2010), p. 22 [4] Q Yao.
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PM superalloy is regarded as one of the most important aerospace industry materials.
The mentioned characteristics result in high complexity in machining process of PM materials.
Zhang, Journal of Iron and Steel Research, International, 13 (2006) 65-68
Thomas, Materials Science and Engineering, 402 (2005) 325-334
Selecka, Journal of Materials Processing Technology, 176 (2006) 62-69

Introduction Despite having high tensile strength, most fiber-reinforced polymer (FRP) materials suffer from relatively low modulus of elasticity compared with steel.
Finite element model The type of unit Concrete unit The Solid65 unit in ANSYS is a three-dimensional solid element, specially developed as concrete, rock, and other materials’ simulation.
It can simulate the concrete materials specific to cracking, crushing and other mechanical phenomena, has a good pre-defined criteria for the destruction of concrete.
Constitutive materials and related parameters The steel rebar constitutive Bilinear Kinematic Hardening Plasticity model was adopted in Steel yield criterion.
Acknowledgements This work was financially supported by the Natural Science Foundation of Jiangxi Province (20122BAB216005).

Materials of workpiece and tool.
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Journal of Basic Science and Engineering, 1995 (in Chinese) [4] Wang Guicheng: Study of Forming Change of the Feed-direction Burrs in Turning.
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