Search results

New methodologies of sizing, shape and topology optimization and applications to the design of structures, devices, mechanisms, and materials are investigated during the last 20 years.
The thinking has wide application in various engineering fields, such as computer science, artificial intelligence, operations research.
This work is partially supported by project from National Science Foundation of China (NSFC) under grant number 60973079 and 10872063.
[15] Stanley Osher, and Ronald P., Fedkiwy, Level set methods: an overview and some recent results, Journal of Computational Physics, Vol. 169(2001), p. 463
Sethian, Level set methods and fast marching methods evolving interfaces in computational geometry, fluid mechanics, computer vision, and materials science, Cambridge University Press, 1999

In preparing one-dimensional nano-materials, electro-spinning has the merits of relatively simple experimental conditions, easy to operate, and less preparation steps.
Nozaki, N.E. de Souza, Comparative study of the degradation of real textile effluents by photocatalytic reactions involving UV/TiO2/H2O2 and UV/Fe2+/H2O2 systems, Journal of Hazardous Materials 147 (2007) 105-110. ].
Fig. 1 Schematic diagram of electro-spinning 2 Experimental 2.1 Materials and equipments.
Journal of Environmental Health Science and Engineering. doi: 10.1186/2052-336X-11-24
Materials Letters,Volume 62, Issue 29, 30 November 2008, Pages 4470–4472

J Materials and Design. 50 (2013)702-712
Computational Materials Science 47(2010)857-866
Journal of Materials Processing Technology. 153–154(2004) 816–820
Journal of Materials Processing Technology. 162–163 (2005)540–545
Journal of Materials Processing Technology. 210(2010)3–23.

The earth-dwelling caves deeply hidden in the layers of loess are a living place dug from the underground “infinite body” of primary soil, which is different from those ground buildings of volume space made from building materials.
Except primary loess, people hardly use other building materials in constructing earth-dwellings, which not only saves natural resources but makes little environmental pollution as well.
Using immature soil as building material to get local material and adopting the method of subtraction in construction, works cost is only spent on the “labor” without material considered.
Acknowlegements This work was financially supported by the China Natural Science Foundation (50978233) and the China “11th-Five-Year” Support Planning Program for Science & Technology (2006BAJ04A02).
[2] Liping Tong and Zidong Zhao: Journal of Zhengzhou University (Natural Science Edition)(in Chinese), Vol. 39 No.4 (2007), pp.174-177 [3] Qinghua Zhou: New Architecture (in Chinese), Vol. 22 No.4 (2005), pp. 26-28 [4] Ruoqi Zhou and Qibo Liu: Environmental Protection (in Chinese), Vol. 30 No.2 (2003), pp. 21-13 [5] Liping Tong and Cuiping Han: Sichuan Building Science (in Chinese), Vol. 35 No.2 (2009), pp.71-74

Effect of Acid Washing of SiC Particles on Dispersing and Friction Properties of Ni-P-SiC Composite Plating Norifumi Miyanaga 1, a, Shigeaki Minamikawa 2,b, Jun Tomioka 3,c 1 Faculty of Science and Engineering, Kanto Gakuin University, Japan 2 Graduate School of Kanto Gakuin University, Japan 3 Faculty of Science and Engineering, Waseda University, Japan amiyanaga@kanto-gakuin.ac.jp, bm16J1009@kanto-gakuin.ac.jp, ctomioka@waseda.jp Keywords: SiC composite plating, Acid washing, Dispersing properties, Friction properties Abstract.
Introduction Electroless nickels have been used in practical applications as a versatile material for anti-wear.
Takano: Properties of Electroless Ni-P-SiC Composite Coatings, Journal of the Surface Finishing Society of Japan, Vol. 41 (1990), p. 407
Miura: The Adhesive Wear Resistance of Ni-SiC Electrodeposited Composite Coatings, Journal of the Metal Finishing Society of Japan, Vol. 37 (1986), p. 73
Sugimoto: Effect of Matrixes on Wear Characteristics of SiC Composite Coatings, Journal of the Surface Finishing Society of Japan, Vol. 42 (1991), p. 84

Progress in structural materials for aerospace systems.
Journal of Materials Processing Technology, 2006,171(3):399-404
[3] Chayong S, Atkinson H.V., Kapranos P, Thixo-forging 7075 aluminum alloys, Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing,390 (2005) 3-12
Materials Letters, 2006,60(12):1475-1479
Materials Science Forum 765 (2013) 321-325 [11] J.

Based on these similarities model material would be prepared, then elastic modulus similitude ratio of model material could be determined.
If simple improve density of material will caused gravity distortion.
Acknowledgements This work was supported by the National Science and Technology Support Plan of China (Grant No.2011BAK12B07), the Scientific and Technological Research Project in Gansu province (Grant No.
JK2010-12), the Natural Science Foundation of Gansu Province (Grant No. 1112RJZA009).
References [1] Li Zhenbao, Li Xiaoliang (2010), Technology for Earthquake Disaster Prevention,5(4):439-450 [2] Jiang Xinliang, XuBingwei, Li Zhu (2010), Journal of Vibration Engineering,23(2):225-229 [3] Li Yue, Jiang Xin-liang(2010), Engineering Mechanics,27(1):73-80 [4] Jiang Liangwei,Yao Lingkan,WangJian (2009), Journal of Transport and Engineering,25(2):1-7 [5] Zheng Yingren, Ye Hailin, Huang Runqiu (2009), Chinese Journal of Rock Mechanics and Engineering,28(8):1714-1724 [6] Li Xiuzhen, Kong Jiming(2010), Journal of Sichuan University (Engineering Science Edition),42(5):243-249 [7] Sun Zaiming, Yuan Jing, Sun Qiang (2010), Railway Engineering, 12:0081-0084

Hybrid nanofluid is a combination of a base fluid (i.e. water, ethylene glycol, mixture of ethylene glycol and water) with two different types of nanoparticles (i.e metal oxides, metals, carbon materials).
Noori, An analytical solution for boundary layer flow of a nanofluid past a stretching sheet, International Journal of Thermal Sciences. 50 (2011) 2256-2263
Zhu, Effects of wall slip and nanoparticles' thermophoresis on the convective heat transfer enhancement of nanofluid in a microchannel, Journal of Thermal Science and Technology. 11 (2016) JTST00017-JTST00017
Alsaedi, Magnetohydrodynamics flow of nanofluid with homogeneous-heterogeneous reactions and velocity slip, Thermal Science. 21 (2017) 901-913
Devi, Numerical investigation of hydromagnetic hybrid Cu–Al2O3/water nanofluid flow over a permeable stretching sheet with suction, International Journal of Nonlinear Sciences and Numerical Simulation. 17 (2016) 249-257

It is well know that there are two kinds of materials, reinforcement and concrete, in the towering reinforced concrete chimney.
Strain rate of reinforcement and concrete was setted by the Cowper - Symonds model [10], namely (10) In Equation (10), is the yield stress of material, ε is the strain rate of materials, C and P are the strain rate parameters of Cowper- Symonds, is the initial stress which applied on the material, Ep is the plastic hardening modulus of material, is the effective plastic strain of material, β is the parameters of plastic kinematic hardening model.
Material is in the state of hardening model when β is zero.
And the materials at the blasting gap can get the function of failure criterion by modifying the K-file.
And the differences between the numerical simulation results and the actual results are the reason that there are deviations between the material parameters for numerical simulation and the actual mechanical properties of materials.

In our research, with old discard plastics and plant fiber as the main raw materials, wood-plastic composites were prepared, and applied in building templates.
Experment Main raw materials.In the waste plastics, polyethylene (PE) is the main composite.
Optimization of compounding formula.Using recycled waste polyethylene plastic and wooden fiber as the main raw materials, with part new PP and various additives as additives, the compounding formula was optimized.
Conclusion With the recycled waste polyethylene plastic and wooden fiber as the main raw materials, the wood-plastic composites building templates were produced, and the compounding formula and the extrusion process parameters was optimized.
Guo, Process factors and performances of recycled plastic wood fiber composites, Journal of Beijing Forestry University 27 (2005) 1-5