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Chinese Journal of Underground Space and Engineering, 4(3): 453–458. (2008) [3] S.G.
Elasticity of Transversely Isotropic Materials (Dordrecht, Springer 2006)
(Science Press, Beijing 2007).

is the material density. c is the viscous damping coefficient.
The discretization stems directly from the integral form of the governing equation over the CV and is therefore conservative in nature and simple to understand and extend to non-constant material properties or non-linear constitutive relations.
Acknowledgement The paper is supported by the Major Project of the Natural Science Foundation in China, No. 91215301 References [1] A.K.
Journal of Computational Physics 225 (2007) :120-144

(3) Element type: solid95，combin14; Materials properties: EX=1.3e11(Pa)，PRXY=0.26，density=7340kg/m3 (4) In view of the complex structure, element size and timeliness of calculation, the paper selects free mesh, smart size Level 7 and refines the meshing at nodes which are applied loads on or combine with the spring-damper elements, Level 4, Depth 2.
Acknowledgements The authors acknowledge the financial support of the National Natural Science Foundation of China (grant No. 10972150) and the National Key NC Research Project (No. 2009ZX04003-021).
Ding: Chinese Journal of Mechanical Engineering Vol. (2008), pp. 208-214 [6] H.Z.

On the basis of further expert feedback, get the 16 factors affecting public construction project duration , as shown in table 1: Table 1:Public construction project construction duration influential factors factors content S1 The owner can not provide the construction conditions on time S2 Money supply shortage S3 Policy changes S4 Information management backward S5 Required design change by the owner S6 Contract dispute S7 The argued duration is not reasonable S8 Project management confusion S9 The sub-contractor delay S10 Inproper contract model S11 The technical conditions of contractor is not conform to the standard S12 Quality and safety issues S13 Unreasonable design documents, drawings progress delay S14 Poor project geographical conditions S15 The lack of skilled technical personnel and management personnel S16 Material supply is delay or quality problems 2 public construction project schedule control system evaluation model 2.1 Selection of evaluation method
* Fund project: Shaanxi Provincial Department of Education Social science research base research projects(12JZ013) References： [1] People's Bank of Chin, 2012 Monetary Policy Report,2013.2.6 [2] JIN Cui, Concerned with public construction project life cycle cost control problems [J] Construction Economics,2008(6) [3] Mohan R.Manavazhi,Dinesh K.Adhikari.Material and Equipment Procurement Delays in Highway Projects in Nepal[J],International Journal of Project Management.2002,20 :627-632 [4] CHENG Hu, Project Management[M].NanJing.Building Industry Press,2009(9)

Mechanical numerical analysis for L-Shape Traffic Signs Bar with Variable Cross-Section Benning Qu1,a, Ran Guo1,b and Bangcheng Yang1,c 1Kunming University of Science and Technology, Kunming China aqubennin@163.com, bprof.guo@hotmail.com, cyangbc5@163.com      Keywords: L-shape traffic signs bar, variable cross-section, thin-wall cross-section of regular octagon, finite element method Abstract.
Material is Q235 steel with specific gravity γ=78.5 kN/m3, Young's modulus E=206 GPa and shear modulus G=79 GPa.
[3]Hua tang, Li zhao,Research on Mechanics Model of Constructing Traffic Sign, Journal of shihezi University,24(2000)746-748
[4] Hongwen Liu，Advanced Material Mechanics，Higher Education Press, Bejing,1987.

Acknowledgements This work was financially supported by the open fund of Shandong Provincial Key Laboratory of Water and Soil Conservation & Environmental Protection (STKF201205) and the National Natural Science Foundation of China (41301320).
Yang: Applied Mechanics and Materials Vol. 470 (2014), p. 703 [7] R.A.
Fu: European Journal of Operational Research, Vol. 97(1997), p. 480

Multi-objective Optimization of Internal Combustion Engine Valve Springs Based on NSGA-II Youjian WANG1, a, Guang ZHANG1, b Jiangxi University Of Science And Technology, Ganzhou, Jiangxi, 341000,China awanyoujian101@126.com, bzhang101505@163.com, Key words: Combustion engine, Valve spring, Multi-objective, NSGA-II.
g6X=dmin-x1≤0 (11) g7X=x1-dmax≤0 (12) g8X=Dmin-x2≤0 (13) g9X=x2-Dmax≤0 (14) g10X=nmin-x3≤0 (15) g11X=x3-nmax≤0 (16) Engineering optimization example To design an internal combustion engine valve spring, its work load is 680 N, the load change frequency is 25Hz and the working stroke is 16.59 mm, spring wire materials is 50CrVA, allowable stress is 450Mpa, structure design requirements: diameter of coil value range is 20mm≤ D≤ 50mm, spring wire diameter value range is 4.5mm≤d≤8mm, the number of workable coils of the
International Journal of Cotational Intelligence Research, (2006) p. 273-286 [4] MA Gui-fei.

Adopting the wheel hub motor brings many advantages: the more conveniently using the X-by-wire technology, the possibility of the weak rigidity connection between the cabin and the body, and the cabin’s separation from the body in emergence which is shown in Fig.3, the more safety for the driver and the passenger if the high-strength elastic materials were used in the cabin. 1 normal driving 2 forward collision driving Fig.3.
Acknowledgements This work was financially supported by the Hebei Natural Science Foundation (E2012202133).
[2] Xizheng, Zhang; Yongqi, Tang; Yinxu, Wang, in: Model predictive control allocation based coordinated vehicle dynamics control with in-wheel motors, edited by International Journal of Advancements in Computing Technology, v 4, n 3, p 75-83, February 2012

Fast Terminal Fuzzy Sliding Mode Control for a Three-links Spatial Robot Shengbin Hu a, Wenhua Lu b, Damin Cao c, Hairong Xu d School of Air Transportation, Shanghai University of Engineering Science, Shanghai, China ahushbin@sohu.com, blu_wh123@126.com, cdamin83730@126.com, djnxuhairong@163.com Keywords: sliding mode control; terminal sliding mode; fuzzy control; Lyapunov method Abstract.
International Journal of Automation and Computing, 2011, 8(2): 215-220 [2] Shengbin Hu, Minxun Lu.
Applied Mechanics and Materials, 2012, v105-107, p2213-2216 [3] L.

Tunable Nanostructures and Sers Activities of Sputtered Thin Silver Films Chenyue Yina, Lina Xub,*, and Ning Guc State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, People’s Republic of China a yinchenyueay@163.com, b xulina@seu.edu.cn, c guning@seu.edu.cn Keywords: silver nanostructures; sputtering; SERS Abstract: A series of silver films were fabricated on silicon by magnetron sputtering method, which enables us to finely tune silver nanostructures by adjusting sputtering process.
Experiment 2.1 Reagents and materials.
Nahidi: The European Physical Journal Applied Physics.