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Introduction Al-Mn alloys have excellent electrical conductivity, thermal conductivity, and corrosion resistance, have good weld ability and process able, and are widely used in packaging materials, heat exchange materials, photographic materials, decorative materials, welding materials and so on.
Experimental The experimental materials are Al-Mn alloys (8wt%Mn) with 0 ~ 8.11wt%Si as additive.
References [1] Borge Forbord, Hakon Hallem and Nils Ryum: Materials Science and Engineering.
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Tribological properties of laser surface texturing and coating duplex-treated surface Jie Jianga, Dang-Sheng Xiongb, Jian-Liang Lic and Yan Shi d Department of Materials Science & Engineering, Nanjing University of Science and Technology, Nanjing, 210094 ajack0332@163.com, bxiongds@163.com, cjianliangli@163.com, dshiyan1262006@126.com Keywords: tribological properties; laser surface texting; coating.
Since these conditions are beyond the limits of general fluid lubricant, one have to find new lubricating materials and explore new lubrication method.
The ball-on-disk matches was used and Al2O3 ceramics ball (Φ materials Ra0.05 μm, 1.27 mm) was the up sample, while 1Cr18Ni9Ti austenitic stainless steel disks after laser texturing and plasma molybdenizing/plasma nitriding treatment were used as the lower sample.
When the MoS2 lubricant is added to improve friction and wear properties of materials, especially at high temperatures, the low friction coefficient and wear rate is obtained.
Etsion: Tribol Int, Vol. 38 (2005), p. 219 [12] M.S.Shi, Solid Lubricant Materials (Chemical Industry Publications, Beijing 2000).

The experimental materials are Ti-48Al-2Cr-2Nb, so the paper sets this material as an example.
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Nguyen, Preliminary Study of Risk Factors in Marine Construction Projects in Saudi Arabia, International Journal of Sciences: Basic and Applied Research. 47 (2019) 99–116
Jain, Ocean structures : construction, materials, and operations., FL: CRC Press, Boca Raton, 2017
Yoshikawa, Buckling phenomenon for straight and curved pipe under pure bending, Journal of Marine Science and Technology. 20 (2015) 94–103
Saadoon, Effect of Loading Level and Span Length on Critical Buckling Load, Basrah Journal for Engineering Sciences. 16 (2016) 15–21
Dewolf, Mechanics Of Materials, fourth ed., McGraw-Hill publication, Singapore, 2006.

Faroukit, Jairam Manjunathaiaht, Sungchul Jee: Variable feed-rate CNC interpolators for constant material removal rates along Pythagorean-hodograph curves.
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Temperature control measures and feedback analysis in rapid construction of Guandi RCC dam Wei Zhou1, a, Xiangyang Jing 1, b and Xinghong Liu 2, c 1 State Key Laboratory of Water Resource and Hydropower Engineering Science, Wuhan University, Hubei Province, China 2 School of Civil and Architectural Engineering, Wuhan University, Hubei Province, China a zw_mxx@163.com, b xy_jing@126.com, c liuxhphd@163.com Keywords: high RCC dam, temperature control, pipe cooling, FEM, thermal stress Abstract.
Acknowledgements This work was supported by the National Natural Science Foundation of China (No.50909078).
I: Temperature and Aging, ASCE, Journal of Structural Engineering.
ASCE, Journal of Structural Engineering.
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The curved bridge bearing is torsional, simulated througn the node degree of freedom constraints. take into account material non- linear effects in solving. 3.
Nonlinear finite element analysis in reinforced concrete [m]Xi’an: Science and Technology Press, 1993. 91-108 [4]WANG Xin-min.
Theoretical Analysis of Curved Beam with Fixed Simple Ends[J].Journal of Shenyang Jianzhu University(Natural Science),2005.Vol.21.NO.3 189-191 [6]CHENG Jin,SHEN Xu-dong.
Three-dimensional Simulation Analysis of Prestressed Concrete Curved Beam Bridges During Construction [J] Journal of Highway and Transportation Research and Development, 2007.Vol.24.NO.4: 108-112 [7]JIN Ju, WANG Jiao-tao.Effect of Radius Variation on Deformation of Construction of Short and Medium Span Curved Beam Bridge[J].
Journal of Hebei University of Technology, 2007, Vol.36.

Simulation of Tree Motion Based on Vega Prime Zhanli Li1, a, Min Zhang1,b 1 College of Computer Science and Technology, Xi an University of Science and Technology, Xi an, Shaanxi, 710054 P.R.China alizl@xust.edu.cn, bmihlin@163.com Keywords: simulation, 3D modeling, motion, Vega Prime, Creator Abstract.
The force is decided by unit length and unit area of the material.
References [1] Chun Zheng and Tao: Virtual reality system of ancient architecture based on Vega Prime (Engineering Journal of Wuhan University, China 2001)
[2] Zhanli Li: Research on Real-time Animation of Trees Swaying in Wind (Journal of System Simulation, China 2008)
[3] Jie Chen and Hong Liu: Modeling 3D Tree Based on Growth (Journal of System Simulation, China 2006)

Summary In practice, the parameters, such as material characteristics, geometric size, boundary condition and so on, of structural systems are random because of the influence from the manufacturing environment, engineering level, installation condition etc..
Acknowledgements This work was financially supported by Fundamental Research Project of Education Ministry (N120303001）and Science and Technology Project of Shenyang Municipal( F12-082-2-00) References [1] Lyon R H, Dejong R.
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[6] Zhao Wei, Zhang Y M: Transfer reliability sensitivity of vibration transfer path systems, Journal of Aerospace Power, Vol.27(5)(2012), p.1080~1086
(Science Press, Beijing 1999).

This design process needs a mass of time and material resources.
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