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FCC equilibrium catalyst is used for the bed material in the tests, whose mean diameter is 67 μm，packing density ρs is 940 kg/m2·s and particle density ρp is1500 kg/m2·s.
China Powder Science and Technology, 2001, 7（3）：6-10
Chemical Engineering Science, 1999, 54: 5541-5546
Chemical Engineering Science,2007, 62:3473 – 3493
Journal of Sichuan University (Engineering Science Edition),2005,37（5）:46-50．

3-D Optimization of Self-balanced Torsion Bar Diameter and its Fillet Radius by FEM Linfeng Wu1 Xiaochun Yin2 and Zhonghua Liu3 1Department of Mechanics & Engineering Science of Nanjing University of Science & Technology Nanjing, China and Department of Mechanical Engineering of North China Institute of Water Conservancy and Hydroelectric Power Zhengzhou, China 2,3Department of Mechanics & Engineering Science of Nanjing University of Science & Technology Nanjing, China 1e-mail: wulinfeng@ncwu.edu.cn Keywords: Theory,Diameter optimization of torsion bar,Fillet radius optimization Abstract.
Results and Analysis The finite element model was calculated and the stress and strain contours were got as fig.3.Max tangential strain occured in cantilever end of transmission crank from Fig.3(a).Due to the symmetrical structure of the system and the anti-symmetrical load,the deformations of the two end had the same(transmission of element nodes,slightly different size).Max tangential strain was 0.014268m (it was equivalent overall angle ),and strain was in the opposite direction.Min strain occured in the middle of torsion bar and strain increased from the middle to the two ends.And the max value occured in the fillets.Max von Mises stress was 280MPa from Fig.3 (b),which was less than yield strength value of 785MPa in the material given.The whole designed structure was safe.The larger stress lies in:①the contact surfaces between torsion bar and the bearing inner ring;② the contact surfaces among torsion bar,crank,and roller spline;③Torsion bar fillets.The lower stress lies in:①non-contact
Acknowledgement The results reported here were obtained while the author was on study leave at Nanjing University of Science & Technology.The author would like to thank Professor YIN Xiaochun and his coworkers for their assistance in making the convertor system available and for this work and their help in the preparation of the manuscript.
Liu: Numerocal Simulations of Thermal-mechanical Stress of Convertor Loop with Complicated Multi-contactsurfaces by 3-D Nonlinearing Finite Element, Journal of Mechanical Strength.
Wang: the Determination of the Strain Dynamic Loading Factor in the Bracket Circle of the Combined Blown Converter,Journal of Mechanical Strength, Vol.15, (1993) No.3, pp.7~10

Interfacial tension can also be calculated by formula (9) :    （9） In the formula, ,, is the polar and non-polar component of surface free energy of material A respectively. , is that of material B respectively . 1.2 Preparation of tested materials and sample Nano-aluminum,particle size (d50) is 140 nm, made by Xi'an Modern Chemistry Research Institute.
Since the process temperature has the most significant effect on the rheological properties of polymer materials , choosing  30,40,50,60 ℃ as the test point, effect of temperature on the rheological properties of three kinds of suspensions is discussed. 
Research status and development trends of nanometer materials in the application of propellants and explosives[J].Chinese Journal of Explosives and propellants，24（4）(2001),61-65 [2] Jayraman K， Anand K V， Chakravarthy S R，et al.
Chinese Journal of Explosives and propellants，25（4）(2002),35～38 [4] JIAO Dong-ming，YANG Yue-cheng，QIANG Hong-fu,et al.
Translated by Xu Yuan-ze, Zhao De-lu, Wu Da-cheng, Beijing: Science Press, 1981,45-102

Experiments Materials and mix proportions.
To carry out this study, local materials are utilized.
The cementitious materials used for this investigation are Chinese standard(GB175-99) [10] P·I 42.5R Portland cement(standard compressive strength of higher than 42.5MPa at the age of 28d) and one-level fly ash.
The cementitious materials ingredients, coarse aggregates and fine aggregates are mixed for about 1 min, and then the water is added in 1 min slowly.
ACI Material Journal 1994;November-December:577-586

Science 306 (2004) 666-669
Phosphorene excites materials scientists.
American Journal of Science 26 (1883) 465-472
Advanced Materials 20 (2008) 3924-3910
Advanced Materials 23 (2011) 4923-4928.

Hanada: Materials Science and Engineering A,Vol. 346 (2003), p. 65-74
DeVan : International Journal of Refractory Metals & Hard Material, Vol.18 (2000), p.237-243
Mrowec: Materials Science and Engineering, A Vol. 267(1999), p.267-276
Tsakiropoulos and Materials Science and Engineering A Vol. 441 (2006) p. 26- 38
Hanada: Materials Science and Engineering A Vol. 364 (2004) p.151-158.

The magnetic head is made of high magnetic conductive material, and it can be navigated by the magnetic force under the action of external magnetic field.
Other parts of the proposed needle are made of diamagnetic material and are insensitive to magnetic field.
Sze: Journal of Vascular and Interventional Radiology Vol. 12 (2001), pp. 1441-1444
Huang: accepted by Proceedings of 2011 International Conference on Biotechnology, Chemical and Materials Engineering (2011)
Meng: Journal of Engineering Design Vol. 15 (2008), pp. 191-197, in Chinese.

University of Electronic Science and Technology of Chengdu developed a finite element analysis for screw [8].
Pre-processing Meshing die Meshing blank Defining material Defining forming direction Setting foundry conditions Viewing analysis results Submitting calculation Generating analysis reports Start End Blank model Die model Material parameter Report template Analysis report Post-processing Fig. 1 Procedure of finite element analysis for sheet metal forming Data exchange interface.
Journal of Plasticity Engineering, 1999, 6 (1): 20-24
Mechanical engineering materials, 2008, 2: 81-84
Journal of System Simulation, 2012, 3: 69-73.

Fig.3 Schematic diagram of four bols flexible Fig.5 Change of angle displacement membrane a) Misalignment angle b)Lateral misalignment c) Axial displacement d）General form Fig.4 Shaft misalignment 2.3 Diaphragm stress analysis Diaphragm materials is 40CrNi2MoA, mechanical properties is σb=1960MPa, σs=1605MPa, [σ]=802MPa, μ=0.3, E=200GPa, ρ=7900kg/m3 and safety factor is n = 2.
Maximum stress area Fig. 6 The place of maximum stress in membrane References [1] Liufang SHENTU, Xiangyan ZHANG, The Design of the Joint Coupler, Mechanical Science and Technology, 2004(1):43-45 [2] Liufang SHENTU, Xiangyan ZHANG, The Study on the Ability of Compensating Axial Displacement of the Joint Coupler, Machine Design and Research, 2003(2):41-43 [3] Hongwen Liu.
Material Mechanics (the five version).
Journal of Mechanical Design and Research , 2000(1):78-80 [6] Liufang Shentu, Hongtao Tang, Chengxuan Wang.
Journal of Mechanical Strength 1998 (4): 276-279 [7] Yuejin SHANG, The guidelines of finite element theory and ANSYS application, Tsinghua University Press, Beijing, 2005

In the Customized Design Module, clients can choose all the parameters from the material library based on their needs without any models in an easy and operational way.
Design Element Management Module.Flower-typed pictures are one of the main material in the Customized Design Module, which supports numerous flower-typed picture database.
All the information concerned the system are recorded including products, materials making, orders and clients’ information.
[5] Yan Tang, Zhenhua Ye et al.: Journal of Zhejiang Sci-Tech University2008, 25 (5), p. 531—534
[8] Yuying Duan, Pinghua Xu et al.: Journal of Beijing Institute of Clothing Technology(Nature Science Edition)2011, 31 (1), p. 65—69.