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The Study of the Correlation between Ground Motion Input and Artificial Boundary Condition Yi Wu School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang, 621010, Sichuan, China w-em@163.com Key words: seismic; ground motion input; artificial boundary; correlation Abstract.
The material properties are as follows: shear module =5.292E9; Yang’s module =1.323E10; poison’s ratio =0.25; mass intensity =2700; speed of shear wave =1400; speed of P-wave =2425; base size ; element size ; time step .
References [1] CHEN Hou-qun: Journal of Hydraulic Engineering, Vol. 37(2006), p. 1417-1423(in Chinese) [2] LIU Jing-bo, WANG Zhen-yu, DU Xiu-li, DU Yi-xin: Engineering Mechanics, Vol. (2005), p. 4-5(in Chinese) [3] Liu Jingbo, Li Bin: Science in China, Ser.
E, Vol. 35(2005), p. 966-980(in Chinese) [4] Wang Zhenyu; Liu Jingbo: Chinese Journal of Rock Mechanics and Engineering, Vol. 23(2004), p. 1169-1173(in Chinese) [5] Zhao Mi: STUDY ON THE VISCOUS-SPRING BOUNDARY AND THE TRANSMITTING BOUNDARY [D].
Randolph: Journal of Engineering Mechanics, Vol. 120(1994), p. 25-42 [15] Wang Songtao, Cao Zi: Modern Seismic Design Methods (China Architecture and Building Press, China 1997) (in Chinese) [16] Liu Jingbo, Lu Yandong in: A direct method for analysis of dynamic soil-structure interaction based on interface idea, edited by Zhang Chuhan, Wolf J P, Dynamic Soil-Structure Interaction.

The material is assumed to be elastic throughout the analysis, and the viscous damping is ignored.
Journal of Mechanics, 2004, Vol. 20(2): 113-122
Journal of Constructional Steel Research 82 (2013) 142–152
Finite particle method for progressive failure simulation of truss structures, Journal of Structural Engineering ASCE, 2011, 137(10): 1168-1181
Journal of Constructional Steel Research, 2013, Vol. 84:72–81

(2)The soil nailing wall is used in the design, the soil nails is 9m in length, with a 16mm diameter, the horizontal and vertical space is both 2000 mm, the elevation angle to the ground is 10°, and the material of the rods are steel bar
Acknowledgement The authors gratefully acknowledge support from the Beijing Municipal Natural Science Foundation through grant 8102027.
China Civil Engineering Journal, 2003 [2] Kristin M.
J.Korean Geotech.Soc,2001,17(14):71-86 [8] Voster T E B,Klar A,Soga K,Estimating the effects of tuneling on existing pipelines Journal of geotechnical and geoenvironmental engineering, 2005, 131(11): 1399-1410 [9] Li Da-yong, Gong Xiao-nan, Zhang Tu-qiao.
Journal of Rock Mechanics and Geotechnical Engineering.2001

They were used as reference to measure the removed material. 275 points inside the machined area were taken into account to calculate the layer thickness of removed material.
According to them, the surface quality depends on the machining mode and even for brittle materials a ductile-mode machining is possible.
The minimum possible roughness is defined by the microstructure of the work piece material [12].
Quereda.: Development of surface finish during the polishing of porcelain ceramic tiles, Journal of Materials Science 40 (2005), p. 37-42
Xu: Micro-structure detection of a glossy granite surface machined by the grinding process, Journal Of Materials Processing Technology 129 (2002) p.403-407

Most of the materials testing equipment are not suitable for precisely defining the NST of steels.
Two types and four kinds of materials were investigated.
- The reliability of the NST tests made on four kinds of materials is regarded satisfactory
Adamiec, M Kalka, Brittleness temperature range of Fe-Al alloy, Journal of Achievements in Materials and Manufacturing Engineering (JAMME). 18 (2006) Issues 1-2, September-October 2, 43-46
Kömi, Physical Simulation for Evaluating Heat-Affected Zone Toughness of High and Ultra-High Strength Steels, Materials Science Forum. 762 (2013) 711-716.

ACI Materials Journal. 2001, 98(4).
Materials and Structures. 2015, 48(4), 753-770.
Materials Science Forum. 2017, 893, 363-368.
Materials Science Forum. 2017, 893, 410-415.
Materials and Structures. 2015, 48(4), 753-770.

Introduction Sediment soils, such as lacustrine silt and marine silt, formed in still water or slowly flowing water are very complex natural geological materials and usually composed of micro particles whose diameters are generally of μm level.
,Shiwakoti, N.Omukai,etc: Journal of the Japanese Geotechnical Society of Soils and Foundations, Vol.43(6) (2003), p.69
Jing Liu: Micro/nano scale heat transfer, Science Press, Beijing, China.
Prada, A. and Civan, F.: Journal of Petroleum Science and Engineering, Vol.22(4) (1999), p.237-240
Tian Qi, Kuanghe Xie, Anfeng Hu, and Zhiqing Zhang: Journal of Zhejiang University(Engineering Science) (in Chinese), Vol .41(6) (2007), p.1023-1028.

Materials and Methods Sediment Sampling and Pretreatment Ten sediment and natural water samples in 10 different sites (Maduo, Xinghai, Guide, Xigu, Zhongwei, Shizuishan, Wuhai, Linhe, Wulateqianqi and Baotou, numbered from Y1 to Y10, as shown in Fig.1) along the upper reaches of the Yellow River were collected in October, 2008 and 2009, respectively.
Journal of Environmental Sciences, 21(2009), p. 291-295
Journal of Environmental Sciences, 22(2010), p. 347-354
Journal of desert research, 23(2003), p. 86-94
Ecology and Environmental Sciences, 19(2010), p. 1901-1905.

Design and Experimental investigation on high efficient Horizontal micro electrical discharge machine Xia yun Shua, Hong hai Zhang Pb School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, PR China Pa shuxiayun@mail.hust.edu.cn, Pbhonghaizhang@tom.com Key Words: Micro-EDM, Electro Discharge Machining, Electrode fabrication, WEDG Abstract.
Since the metal removal per discharge is very small for every pulse, discharge occurs at a particular location where the electrode materials are evaporated or ejected in the molten phase then a small crater is generated both on the tool electrode and work piece surfaces.
Journal of Materials Processing Technology, 2004, 149(1): p.328-333
Wuhan: Huazhong University of Science and Technology, 2008 [5]Zhang H H, Shu X Y, Zhang F. et al.
Journal of Microelectromechanical Systems.2002, 43(11): p.102-111

In: Materials Science Forum.
In Materials Science Forum (Vol. 1039, pp. 269-273).
Advanced Engineering Materials, 14(5), B231-B239
Journal of nanoparticle research, 12(5), 1531-1551
Journal of Raman Spectroscopy, 44(10), 1416-1421.‏