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And it can greatly save manpower, material resources and time; effectively shorten the development cycle.
The residual strain produced due to welding caused the material near the weld zone to reach its plastic state.
[3] Jian-hua WANG, Hao LU, Prediction of welding deformations by FEM based on inherent strains, Journal of Shanghai Jiao tong University, Vol.
Bhide, et al., Evaluation of 2D, 3D and applied plastic strain methods for predicting buckling welding distortion and residual stress, Science and Technology of Welding and Joining, 2006, (11): 707-716
Goldak, Consistent strain fields in 3D finite element analysis of welds, Journal of Pressure Vessel Technology, 1990, 112(August): 309-311

International Journal of Hydrogen Energy, 32: 2367-2373 [5].
International Journal of Hydrogen Energy 32:287-2880
Materials Science and Engineering C 25:553 - 559
Journal of Solid State Chemistry 177:134-138
Journal Of American Chemical Society ,121-4526 .

Acknowledgements This work is supported by the Program for Zhejiang Leading Team of S&T Innovation (No. 2009R50008), Zhejiang Provincial Natural Science Foundation of China (No.
Liu: International Journal of Advance Manufacturing and Technology, Vol. 17 (2001) p. 189-195 [6] N.
Yanagiuchi: International Journal of Machine Tools and Manufacture, Vol. 49 (2009) p. 876-84 [7] J.B.
Teng: International Journal of Machine Tools & Manufacture, Vol. 46 (2006) p. 869-876 [11] Z.Y.
Yao: Key Engineering Materials, Vols. 426-427 (2010) p. 441-446

Proliferation Effect of Mandibular Condylar Chondrocytes Given the Static Tension-Stress and/or TGF-β1 in Vitro Zhiqiang Wang 1a, Zhihe Zhao 1b, Jinlin Song2c , Yubo Fan 3d , Songjiao Luo1e 1 College of stomatology, Sichuan University, Chengdu, P.R.China 2 College of stomatology, Chongqing University of Medical sciences, Chongqing, P.R.China 3 Bioengineering Departments, Beihang University, Beijing, P.R.China awangzhiqiang1974@sina.com,b zhaozhihe1963@yahoo.com.cn,c zhiqiangw1974@sohu.com, d zhaozhihe1963@126.com,e zhaozhihe1963@163.com Keywords: static tensile-stress; TGF-β1; flow cytometry; proliferation Abstract.
Materials and Methods Experiment methods.
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Acknowledgements The Financial support for this work by the National Natural Science Foundation of China (No.50974108) is gratefully acknowledged.
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Journal of Sound and Vibration, pp. 17-26, July 2011
Mechanics of concise materials.Higher Education Press, Beijing, pp. 150-193, 2006.

Using the new design method, not only the structural materials are used more efficiently, but also the construction cost of the shell is reduced.
Acknowledgements This project is financially supported by National Natural Science Foundation of China (51078289).
Journal of Civil Engineering. 2000, 33(6):105-108 (In Chinese) [2] Barsoum, R.S and Gallagher, R.H.
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Journal of Constructional Steel Research. 2003, 59(1):63-90 [4] Guo, X.N, Luo, Y.F, and Shen, Z.Y.

The structural material is stainless steel, and its right end is fixed.
Acknowledgement The authors would like to thank for the support by Natural Science Foundation of China under the grant 50875212 and Specialized Research Fund for the Doctoral Program of Higher Education of China under the grant 200806990019.
Holnicki-Szulc: Key Engineering Materials.
Yanchevsky: International Journal of Solids and Structures.
Lykotrafitis: Journal of Elasticity.

Mold design and process experiment of open die cold extrusion of spline shaft Liu Yingchun Weifang University of Science and Technology, ShanDong WeiFang, china; liuych@163.com Key words: spline shaft; Open die extrusion; The mold; Local upsetting Abstract: in view of the 125 cc motorcycle transmission of spline shaft, spline is discussed in open die extrusion die structure characteristics and the influence of the spline forming mold springback problem, put forward the choice among the formability of open die extrusion into the die Angle, can avoid squeezing into the mold mouth occurs when local upsetting. 1.
The introduction Now with the method of open die cold extrusion forming of spline shaft has got wide attention both at home and abroad, the advanced technology has many characteristics, such as saving material, high quality, high efficiency.
The formability of spline open die extrusion experiment 3.1 the formability and calculation are put forward Spline when open mold squeeze in into the mold mouth is easy to appear the phenomenon of local upsetting, this is because the billet extrusion P per unit area is greater than the yield strength of material sigma S.
[3] diao seal, Zhang Kaifeng LY12 hemispherical pieces of the dynamic explicit finite element simulation of deep drawing process [J] journal of metal forming technology, vol. 1, 20200
[5] Wan Min Yang Yuying, Li Shuoben mechanics modeling and numerical analysis of conical part stamping process [J] shaping engineering journal, vol. 7, No. 4 Dec., 2000

Xu: Journal of Transducer Technology, Vol.23 (2004) pp.86-88
Zhou: New Carbon Materials,Vol.16 (2001), pp.73-78
Yu: Chinese Journal of Electron Devices, Vol.27 (2004) No.3, pp.527-532 (in Chinese)
Gou: Material Dymanic (Science Publishing Company, China 2005)

The DPs is composed by function parameters which mean what to do, structure parameters which represent how to do and constraints which are restrictions about material, physical rules and other attributes of the structures.
What kinds of Constraint equations are established is determined by the features of structures, which could be function, material and geometry.
[2] G.Q.Zhang, W.G.Zhang and Y.F.Zhong: Journal of Computer Aided Design & Computer Graphics, Vol.17 (2005), p. 328-332
[3] H.J.Somg and Z.H.Lin: Chinese Journal of Mechanical Engineering, Vol.39 (2003), p. 83-87
[4] X.T.Wei, J.R.Tan and S.C.Wang: Mechanical Science and Technology, Vol.18 (1999), p. 1013-1015