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Ministry of construction, ministry of energy and the state administration of building materials promulgated design and construction procedures about concrete-filled steel tube structure.
The paper only considers that vehicle collides protection rack at low speed, and materials are in the elastic stage.
Structural dimensions and materials.
Sichuan Building Science, 2009,35(1):179-183 [6] Hardika M S, Gardner N J.
Journal of Structural Engineering ASCE, 2004, 130(2):223 ~ 232

Aimming at the different technologies, sheet materials, technical requirements and technolgiest, strategies will timely vary ,yet the most important strategy rests with die settings ,adjusting and renovating[2], it implies the extreme uncertainty.
Because the back pulling force is mostly adopted in pressing engineering practice, this paper chooses the first model shows in Figure1, Simulating calculation adopts FEA based on the elasticity-plasticity theory of plane strain large deformation, regarding sheet metal as elasticity-plasticity body, die materials as rigidity body [2].
Dissertation, University of Shanghai for Science and Technology, 2003, in Chinese
[3] Miao Jin, Baofeng Guo,Shuoben Li,ect: Journal of Plasticity Engineering, Vol.10(2003),p. 32-36, in Chinese
[6] Jieshi Chen,Xianbin Zhou,Jun Chen:Journal of materials Processing Technology, Vol.210(2010),p.315-322.

Leoni, Tin oxide thin-film sensors for aromatic hydrocarbons detection: effect of aging time on film microstructure, Journal of the American Ceramic Society 82(5) (1999) 1201-1206
Hassan, Effect of annealing temperature on the characteristics of nanocrystalline tin dioxide thin films, Journal of Applied Science and Agriculture, 10(5) (2015) 159-164 [6] I.
Abu Hassan., Effects of glycerin volume ratios and annealing temperature on the characteristics of nanocrystalline tin dioxide thin films, Journal of Materials Science: Materials in Electronics 26(6) (2015) 3417-3426
Abu Hassan, Room temperature hydrogen gas sensor based on nanocrystalline SnO2 thin film using sol–gel spin coating technique, Journal of Materials Science: Materials in Electronics 27(5) (2016) 4356-4362
Wu, Realizing a SnO2-based ultraviolet light-emitting diode via breaking the dipole-forbidden rule, NPG Asia Materials 4 (2012) 1-6

The lightweight design of the supporting parts can save materials and evenly distribute the load of the machine tool [4].
For linear dynamic analysis, the mass, stiffness, and damping matrices do not vary with time. [11] Materials and Methods Before performing any analysis, it is crucial to establish all relevant material properties for the selected analysis type and associated material model.
The material model serves as a framework for understanding material behavior and establishes the required material properties.
Stress and Strain: If applicable, stress (fig.3.d) and strain results in materials subjected to dynamic loading.
Weight variation for each scenario The variation of weight in a design study typically involves assessing how changes in the design or materials affect the weight of a structure or component.

Jo et al.: Journal of Materials Processing Technology Vol. 173 (2006), p. 223-231
Duszczyk: Journal of Materials Processing Technology Vol. 209 (2009), p. 1891-1900
Mehtaa et al.: Journal of Materials Processing Technology Vol. 113(2001), p. 93-97
Wu et al.: Materials Science and Engineering A Vol. 435-436 (2006), p. 266-274
Tomesani: Journal of Materials Processing Technology Vol. 153-154 (2004), p. 366-373.

Passerone: Journal of Materials Science, Vol. 47 (2012) No.7, p.3252
Wu: International Journal of Refractory Metals and Hard Materials, Vol. 25 (2007) No.3, p.244
Filgueira: International Journal of Refractory Metals and Hard Materials, Vol. 25 (2007) No.4, p.328
Filgueira: Materials Science Forum, Vol. 727 (2012) No.12, p.275
Wang: Journal of Materials Processing Technology, Vol. 129 (2002) No.1, p.427.

The Effects of torsional pre-strain on 35CrMo tensile property and uncertainty evaluation Xijie Yang, Shiyue Wang, Guoshou Liu Faculty of Architectural Engineering, Kunming University of Science and Technology, Kunming, 650500, P.R.China yangxj1666@126.com, yxj1666@sina.com Key words: torsion pre-strain mechanics property uncertainty evaluation Abstract.
Acknowledgements This work was financially supported by the Science Foundation of Yunnan Education Department (2010Y383).
References： [1] CHEN Zhi-juan, MIAO Guo-min, SUN Ming-xue. 35CrMo Alloy Steel Motor Shaft Fracture Failure Analysis [J], Heat Treatment of Metals, 2010（6）(In Chinese) [2] Wang Shiyue, Lin Mojun,Shao Jianfei Effect of Torsion Pre-strain on Low Cycle Fatigue Behavior of Steel 45[J], Journal of Mechanical Strength,1998(12):300-302.
Journal of Highway and Transportation Research and Development, 2009, 26(6):45-48.
GB/T228.1-2010 Metallic materials-Tensile testing-Part 1:Method of test at room temperature [S], 2010.12(In Chinese) [7] State General Administration of Quality Supervision, Inspection and Quarantine.

. %), A356 intermediate alloy and mixed rare earth were used as the raw materials.
The Journal of the Minerals, Metals & Materials Society, 2004, 56(1):46-48
Metallurgical and Materials Transactions A. 2005, 36(8): 2059–2065
Materials and Design. 2015, 65:1229-1235
Journal of Materials Science, 2008, 43(22):7157–7164

The properties of the materials constituting the studied structure are presented in the Table.3.
Material properties.
AOUES” Optimization for an electronic card with a new hybrid method”Advanced Materials Research Vol. 682 (2013) pp 143-151© (2013) Trans Tech Publications, Switzerland
Journal of Electronic Packaging, Juin 1995, vol.117, pp. 123-129
EL HAMI, ”A New Hybrid Genetic Algorithm and Particle Swarm Optimization” .Key Engineering Materials Vol. 498 (2012) pp 115-125 © (2012) Trans Tech Publications, Switzerland.

In Vietnam, especially in the South of Vietnam, there are many studies that consider coal ash in cement material, backfill material, brick material but very little studies in flexible pavement.
Experimental Design Material.
Firstly, the chosen gradation and chosen materials are obtained on the Material part on this paper.
Morteza, Application of coal waste powder as filler in hot mix asphalt, Journal of Construction and Building Materials 66 (2014) 476-483
Pooyan, Coal waste application in recycled asphalt mixtures with bitumen emulsion, Journal of Cleaner Production (2014)