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Acknowledge This research was supported by science and technology project of the Ministry of Housing and Urban-Rural Development of China (2011-K6-13), science and technology project of Department of Education of Liaoning province (L2011087) and young teachers fund of Shenyang Jianzhu University (2011215).
Environmental Science and Technology, Vol. 12 (2009), p .98.
Research of Environmental Sciences, Vol.1 (2009), p114-118.
Environmental Science & Technology, Vol.6(2011), p. 48-52.
(in Chinese) [10]HAMID-REZAKARIMINIAAE-HAMEDAANIZ, KOHZO KANDA, FUMIOKATO.Journal of Bioseience and Bioengineering,Vol.1(2004),p.39-44.

School of Material Science and Engineering, Hebei University of Science and Technology, Shijiazhuang Hebei 050000, China a. glorychen326@foxmail.com, b. hyyy123123@163.com, c.13333373517@163.com, d.muwoods@163.com Keywords: Simulation, Monitoring, Welding task, Off-line programming Abstract.
In addition, Beihang University, Shandong University, Hebei University of Technology, Huazhong University of Science and Technology has done a certain amount of exploration, mastered the basic technical means to the off-line programming system [5].
Wuhan: Huazhong University of Science and Technology Press(1996) [2] Jinsheng Li."
"Research of Kinematics Modeling and Simulation for Industrial Robot".Wuhan: Huazhong University of Science & Technology(2007) [6] Can Ying, Jingmei Zhai, Tie Zhang.
"Off-line Teaching for Industrial Robot Based on SolidWorks".Journal of Shanghai Dianji University,Vol.15(2)(2012),p.111

This ambivalent challenge often demands to solve various conflicts of objectives and thus requires a well-balanced coordination of engineering and materials science.
Steel materials with low strengths like DC- and DX- steels show high elongation, whereas materials with higher strength correspondingly exhibit minor values of elongation.
The crash behaviour of these materials will be analyzed with the help of a vertical drop test bench.
Table 2 gives a general overview of the employed materials.
Lechler, Investigation of the thermo-mechanical properties of hot stamping steels: Journal of Materials Processing Technology 177 (2006), 452-455

Methodology Materials for concrete specimens.
Materials Content (per m3) 0.45 w/c Mixture 0.65 w/c Mixture Cement 411 kg 285 kg Water 185 kg 185 kg Coarse Aggregates 1010 kg 1033 kg Fine Aggregate 731 kg 812 kg Additive (plastifying agent) 4 cc/kg cement 4 cc/kg cement The specimens were mounted on metallic racks on the exposure sites, one meter above ground and with one lateral surface oriented toward the dominating wind (Figure 4).
Exposure Site Exposed Face Covered Face 15 mm 20 mm 30 mm 15 mm 20 mm 30 mm Mérida 12.2 21.6 48.7 22.0 39.1 87.9 Chihuahua 3.8 6.7 15.2 7.4 13.2 29.8 Oaxaca 9.0 16.0 36.0 8.0 14.2 32.0 Morelia 5.2 9.2 20.7 10.2 18.1 40.7 Mexico City 7.2 12.8 28.7 8.7 15.4 34.6 Querétaro 9.4 16.7 37.5 10.6 18.9 42.5 Toluca 6.5 11.5 25.9 6.9 12.3 27.7 Mexicali 3.9 6.9 15.6 3.7 6.6 14.8 Progreso 6.9 12.3 27.7 14.1 25.0 56.3 Veracruz 14.8 26.3 59.2 20.7 36.7 82.6 Campeche-1 28.7 51.0 114.8 51.0 90.7 204.1 Campeche-2 12.8 22.7 51.0 51.0 90.7 204.1 Campeche-3 28.7 51.0 114.8 18.4 32.7 73.5 Ackowledgements The authors acknowledge the Mexican National Council for Science and Technology (CONACYT) and the Iberoamerican Programme Science and Technology (CYTED) for the Development and the opportunity of sharing ideas and knowledge in the Iberoamerican countries.
Journal of Materials in Civil Engineering, Vol. 15, 2003. pp. 344-353
ACI Materials Journal, Vol. 89, 1992. pp. 119-130

Shape of material for longitudinal turning was rod Ø90mm which was prefabricated to Ø85mm.
For transversal turning the shape of material is a pipe with outer diameter Ø125mm and wall thickness of 14mm.
Kilickap, Selection of cutting fluids in machining processes, Journal of Achievements in Materials and manufacturing Engineering 25 (2007) 99-102
Ramkumar, Nano-cutting fluid for enhancement of metal cutting performance, materials and Manufacturing Processes 27 (2012) 963-967
Gostimirovic, Multi-output fuzzy inference system for modeling cutting temperature and tool life in face milling, Journal of Mechanical Science and Technology 28 (2014) 4247-4256.

Materials and methods Substrates and inoculum Cotton stalks (variety Gossypium hirsutum Linn Zhong 35), were harvested in early November 2011 from the cotton field in Xinjiang Alaer, China.
The digestion materials were stirred, and daily biogas production, methane production were examined.
Scanning electron microscopy of original materials and digested residues The digested cotton stalks were dried under the temperature of 80℃, used for scanning electron microscopy.
Lv: Journal of Taiyuan University of Technology Vol. 33 (2002), p.495-497, 505 (In Chinese) [12] H.
Cao: Food Science, Vol. 32 (2011), p. 192-197 (In Chinese) [15] P.

In fact the local yield of the material does not represent the overall damage of the tower, furthermore, the damage of the structure is not necessarily occurred in the frame member that the material yields, the methods in [7] are over conservative.
In the analysis in this paper ANSYS Finite Element (FE) software is used to set up a hybrid model by beam and link element[12,26]，and BEAM188 element is used to simulate the main angle and crossing tilted materials, the unit has the capability to pull, press, bend, cut, and twist, being able to conduct large deformation analysis, achieve unilateral constraint of end node, and also being able to make the direction of the angle steel in the model fully in accordance with the actual structure, so that reducing the calculation error to the maximum extent; Taking the contribution of auxiliary materials to the whole structure into consideration beam element, LINK 180, is used to simulate when modeling, and only the pull and press capabilities are considered; For the bind bolts between crossing tilted materials node coupling mode is adopted to make the linear displacements in X, Y, Z directions being fully identical, but rotation constraint is not taken into consideration.
(2)Complex displacement conditions In complex displacement conditions comparing normal service condition (NORZLA) with abnormal service condition (NORZYA), the damage forms are similar basically, both are characterized by the instability of crossing tilted materials, and the positions of the unstable frame members are basically same.
Acknowledgements The authors would like to express their appreciation to the National Natural Science Foundation of China(50004008) and Xuzhou Power Supply Company for their financial support of this paper.
Journal of China Coal Society,2009,34（8）:1043-1047(in Chinese)

The final gap to be welded was filled with material similar to the plate material and meshed with the same solid element type.
Shima: International Journal of Mechanical Sciences, Vol. 30(1988), p. 877 [2] J.G.
Raval: J. of Materials Processing Technology, Vol. 197(2008), p. 268 [5] A.H.
J. of Material Forming, Vol. 2(2009), p. 45 [6] V.K.
Champliaud: J. of Materials Processing Tech., Vol. 198(2008), p. 330 [8] Z.

Wescott3, e, E.C Oliver4 1 Manchester Materials Science Centre, UMIST, Grosvenor St.
The slight overestimation may be due to the fact that the time dependence of the materials yield stress with temperature and the possibility of creep relaxation were not considered in the model.
Nicholas: Materials and Design, 1997. 18(4-6): p. 269-273. 2.
Peel: Dissertation in School of Materials, University of Manchester, 2005. 7.
Tang: Journal of Manufacturing Science and Engineering, 2003. 125(1): p. 138-145. 9.

And the filling materials of collapse area are described by coupling model of nonlinear Drucker-Prager plasticity and creep.
Table 1 Material parameters of the model Materials ρ [t/m3] E [GPa] μ φ [°] c [kPa] Creep parameters A n m Surrounding rock 2.45 5 0.30 39 800 - - - Rock bolt 7.8 210 0.15 - - - - - Shotcrete 2.3 21 0.20 - - - - - Filling materials of collapse area 1.9 0.5 0.35 35 150 1.018e-8 1.0 -0.875 Where ρ is density, E is Elastic modulus, μ is Poisson's Ratio, φ is angle of internal frictional, c is cohesion, and A, n, m is the creep parameters of filling materials in collapse area.
Acknowledgements This study is financially supported by the National Natural Science Foundation of China (Grant No. 50078014).
Changsha University of Science and Technology, China, 2009).
Liu: Chinese Journal of Rock Mechanics and Engineering, Vol.25 (2006) No.1, p.158.