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Online since: October 2006
Authors: Akii Okonigbon Akaehomen Ibhadode
∆Ro/Ro (4)
By considering uniform stresses in region ABCD in Fig.1(e), and applying Tresca yield
criterion, the magnitude of the radial stress σr is given by
σt = σy - 2k (5)
where k is the shear flow stress of the workpiece material and
σy = F/(π(Ro + ∆ROF)
2) ≈ F/(πRo2) (6)
is the axial stress in the region of the workpiece in contact with the container wall for small
values of die expansion (under load) ∆ROF.
Dean T.A. and Hartley P. (1996): Proceedings of the Institution of Mechanical Engineers Part B: Journal of Engineering Manufacture, Vol.210 NB6 pp.565 - 578
Hansel M. and Rebhan T. (1992): Proceedings of the Institution of Mechanical Engineers, Part B, Journal of Engineering Manufacture Vol. 206 NB2, pp. 143 - 150
[6] Ibhadode A.O.A. (1997): American society of Mechanical Engineers, Journal of Manufacturing Science and Engineering.
Dean T.A. and Hartley P. (1996): Proceedings of the Institution of Mechanical Engineers Part B: Journal of Engineering Manufacture, Vol.210 NB6 pp.565 - 578
Hansel M. and Rebhan T. (1992): Proceedings of the Institution of Mechanical Engineers, Part B, Journal of Engineering Manufacture Vol. 206 NB2, pp. 143 - 150
[6] Ibhadode A.O.A. (1997): American society of Mechanical Engineers, Journal of Manufacturing Science and Engineering.
Online since: June 2013
Authors: Jing Long Wang, Dong Li Yang
Introduction
With the development of the oilfield and the deepening of dynamic analysis, geological dynamic analysts need to query the various static and dynamic data and material based on types of oilfield development every day.
References [1] Kun Zhou, Chengzhu JIN, Jinhui Xiong, Yushan Zhao, Yuzeng Yao : the Forum of Geology and Mineral Resources, Vol.21 (2006), p.51 [2] Bilong Wen, Xueshuang Liu, Songzao Zhang: Journal of Harbin University of Commerce (Natural Sciences Edition), Vol.25 (2009), p.175 [3] Bilong Wen, Xiangrui Guan, Kai Zhou: Journal of Qiqihar University, Vol.23 (2007) , p.35 [4] Feng Wang, Mingyi Cui: Journal of Henan Normal University, Vol.32(2004) [5] Kun Yang, Quanli Xu: Geomatics & spatial information technology , Vol28(2005)
References [1] Kun Zhou, Chengzhu JIN, Jinhui Xiong, Yushan Zhao, Yuzeng Yao : the Forum of Geology and Mineral Resources, Vol.21 (2006), p.51 [2] Bilong Wen, Xueshuang Liu, Songzao Zhang: Journal of Harbin University of Commerce (Natural Sciences Edition), Vol.25 (2009), p.175 [3] Bilong Wen, Xiangrui Guan, Kai Zhou: Journal of Qiqihar University, Vol.23 (2007) , p.35 [4] Feng Wang, Mingyi Cui: Journal of Henan Normal University, Vol.32(2004) [5] Kun Yang, Quanli Xu: Geomatics & spatial information technology , Vol28(2005)
Online since: June 2008
Authors: Lei Jiang, Cong Li, Xun Cheng Wu
Jiangc
College of Automobile Engineering, Shanghai University of Engineering Science,
Shanghai 201620, China
a
licong@ae.buaa.edu.cn, bwuxuncheng@yahu.com.cn, cjianglei@buaa.edu.cn
Keywords: Simulation; Numerical model; Processor; Fuel cell
Abstract.
The material of reactor is stainless.
[1] Amplest J C, Mann R F ,Weir R D: Can J Chem .Eng Vol. 66(6) (1998), p. 950 [2] Kaoru Takeishi: Applied Catal A Vol. 260 (2004), p. 111 [3] WANG S Z, ISHIHARA T, Takita Y: Appl Catal A Vol. 228 (2002), p. 167 [4] GalvitaVV, SeminGL, Belyaev V D, etal: Appl Catal A Vol. 216 (2001), p. 85 [5] Troy A .Semelsberger: Journal of Power Soures Vol. 29 (2004), p.1047 [6] Troy A .Semelsberger: Journal of Power Sours , Vol. 12 (2005), p.87 [7] Yohei Tanaka: Appl Catal B, Vol. 57 (2005), p.211 [8] Qijin Zhang: Appl Catal A, Vol. 288(2005), p.169 [9] Qijin Zhang: Catalysis Letters, Vol.102 (2005), p.197 [10] Licong, Li Xinghu,Song Lingjun: Chinese journal of power sources.
The material of reactor is stainless.
[1] Amplest J C, Mann R F ,Weir R D: Can J Chem .Eng Vol. 66(6) (1998), p. 950 [2] Kaoru Takeishi: Applied Catal A Vol. 260 (2004), p. 111 [3] WANG S Z, ISHIHARA T, Takita Y: Appl Catal A Vol. 228 (2002), p. 167 [4] GalvitaVV, SeminGL, Belyaev V D, etal: Appl Catal A Vol. 216 (2001), p. 85 [5] Troy A .Semelsberger: Journal of Power Soures Vol. 29 (2004), p.1047 [6] Troy A .Semelsberger: Journal of Power Sours , Vol. 12 (2005), p.87 [7] Yohei Tanaka: Appl Catal B, Vol. 57 (2005), p.211 [8] Qijin Zhang: Appl Catal A, Vol. 288(2005), p.169 [9] Qijin Zhang: Catalysis Letters, Vol.102 (2005), p.197 [10] Licong, Li Xinghu,Song Lingjun: Chinese journal of power sources.
Online since: October 2014
Authors: Kamarul Arifin Ahmad, Harijono Djojodihardjo, Mohammad Jafari
Here, the material of the beam is considered to be made of stainless steel.
Journal of Sound and Vibration, (2000) [7] S.S.
Sun, Vibration control for a flexible-link robot arm with deflection feedback, International Journal of Non-Linear Mechanics, (2003) [9] P.
Sabatini, Second Order Effects Of The Flexibility on the Control of a Spacecraft Full-Coupled Model, IAA-AAS-DyCoSS1-10-08, in Advances in Astronautical Sciences, Ed.P.Bainum, J-M.Contant and A.Guerman, published by Univelt (2012)
Reyes, Vibration frequencies for a uniform beam with one end spring- hinged and subjected to a translational restraintat the other end, Journal of Sound and Vibration, 48(4) (1976) 565-568
Journal of Sound and Vibration, (2000) [7] S.S.
Sun, Vibration control for a flexible-link robot arm with deflection feedback, International Journal of Non-Linear Mechanics, (2003) [9] P.
Sabatini, Second Order Effects Of The Flexibility on the Control of a Spacecraft Full-Coupled Model, IAA-AAS-DyCoSS1-10-08, in Advances in Astronautical Sciences, Ed.P.Bainum, J-M.Contant and A.Guerman, published by Univelt (2012)
Reyes, Vibration frequencies for a uniform beam with one end spring- hinged and subjected to a translational restraintat the other end, Journal of Sound and Vibration, 48(4) (1976) 565-568
Online since: May 2011
Authors: Duo Zhong Pan, De Min Wei
The construction mechanics researches the time effect, safety, geometrical and material nonlinearity during the construction progress.
Journal of Structural Engineering, Vol. 118(1992), p. 944
Journal of Wuhan University of Technology (Transportation Science & Engineering), Vol. 30(2006), p. 496.
Journal of Tongji University, Vol. 32(2004), p. 1295.
Journal of Structural Engineering, Vol. 118(1992), p. 944
Journal of Wuhan University of Technology (Transportation Science & Engineering), Vol. 30(2006), p. 496.
Journal of Tongji University, Vol. 32(2004), p. 1295.
Online since: November 2013
Authors: Wen Luo, Jian Long Cao, Hai Tao Long
In this paper, on the basis of reasonable determining material thermal parameter, using the finite element software ABAQUS to analyze the effect of sectional dimensions, number of sides by fire and fire duration of rectangular concrete columns under the action of fire on sectional temperature field, that provides a certain basis for reasonable fire resistant design of reinforced concrete member.
Coupling Thermal and Mechanical Effect on structural Fire Safety[J].Fire Safety Science, 2007, 16( 1) : 60 ~ 66
Fire Safety Journal, 2009, 44 ( 5 ) : 741~748
China Civil Engineering Journal, Vol.26, No.3, 1993:47~54
JOURNAL OF TONG JI UNIVERSITY (NATURALSCIENCE), 2004, 32(9): 1121 − 1125
Coupling Thermal and Mechanical Effect on structural Fire Safety[J].Fire Safety Science, 2007, 16( 1) : 60 ~ 66
Fire Safety Journal, 2009, 44 ( 5 ) : 741~748
China Civil Engineering Journal, Vol.26, No.3, 1993:47~54
JOURNAL OF TONG JI UNIVERSITY (NATURALSCIENCE), 2004, 32(9): 1121 − 1125
Online since: March 2004
Authors: Zi Chen Chen, Chun Liang Zhang, Zhe He Yao
t sinmet sinF)t(F
2
1 ��=�= . (1)
The equation of motion for the inertial vibration feeder is as follows:
)()()()( 11
11
1 tFtxktxctxM =++ &&& . (2) Journal Title and Volume Number (to be inserted by the publisher) 799
where M=m+m1.
Fig.5 and Fig.6 show that the vibration transmissibility and the work efficiency of the inertial vibration feeder can be improved markedly by choosing right feedback variables and appropriate feedback gain for the hybrid vibration c1 c2 k2 m m1 F(t) k1 x1(t) x2(t) m2 e fa(t) � /� n 20log|P(j �)/F(j �)|(dB) Journal Title and Volume Number (to be inserted by the publisher) 801 isolation system.
As shown in these figures, the vibration displacement of the Inertial vibration feeder (control object) PID controller dt d � Kp Kd Ki w wd e Fuzzy logic� controlleU� MUX �edt dt de e ,, Error N Z P N L M S Z M S S P S M M K1 e Error N Z P N L M S Z M S S P S M M K2 dt de Error N Z P N L M S Z M S S P S M M K3 �edt Journal Title and Volume Number (to be inserted by the publisher) 803 inertial vibration feeder (m1) in the state of hybrid vibration isolation is more than two times as that in the state of passive vibration isolation, and the work efficiency is improved markedly.
Acknowledgement This work is supported by the National Natural Science Foundation of China (No. 50075078).
Chen: Proceedings of the 3rd International Conference on Material Handling & International Conference on Freight Pipeline (Shanghai, China 1999)
Fig.5 and Fig.6 show that the vibration transmissibility and the work efficiency of the inertial vibration feeder can be improved markedly by choosing right feedback variables and appropriate feedback gain for the hybrid vibration c1 c2 k2 m m1 F(t) k1 x1(t) x2(t) m2 e fa(t) � /� n 20log|P(j �)/F(j �)|(dB) Journal Title and Volume Number (to be inserted by the publisher) 801 isolation system.
As shown in these figures, the vibration displacement of the Inertial vibration feeder (control object) PID controller dt d � Kp Kd Ki w wd e Fuzzy logic� controlleU� MUX �edt dt de e ,, Error N Z P N L M S Z M S S P S M M K1 e Error N Z P N L M S Z M S S P S M M K2 dt de Error N Z P N L M S Z M S S P S M M K3 �edt Journal Title and Volume Number (to be inserted by the publisher) 803 inertial vibration feeder (m1) in the state of hybrid vibration isolation is more than two times as that in the state of passive vibration isolation, and the work efficiency is improved markedly.
Acknowledgement This work is supported by the National Natural Science Foundation of China (No. 50075078).
Chen: Proceedings of the 3rd International Conference on Material Handling & International Conference on Freight Pipeline (Shanghai, China 1999)
Online since: March 2014
Authors: Lian Yan Du
Column design on learning English paradise website
Audio video
Learning center
English songs
English film
English news
English story
English conversation
English game
Writing learning
Vocabulary learning
Grammar learning
Listening speaking
Synchronism coach
Electronic teaching plan
Testing center
Item bank center
Online test
Answer center
Assisted learning
Material download
Friendly links
E-books
Customer center
Learning forum
Site search
Back-stage
management
User management
File management
System data backup
System configuration
Information maintenance
Security management
Fig. 1.
Acknowledgement This work is supported by social science fund project of Liaoning province (L13DYY024).
Yao, "On the Performance Improvement of IVoD Service in P2P Networks," Journal of Fuqing Branch of Fujian Normal University, vol. 32, no. 5, pp. 29-36, 2012
Chen, et al., "Modeling and application of moderate prefetching strategy based on video slicing for P2P VOD systems," The Journal of China Universities of Posts and Telecommunications, vol. 19, no. 2, pp. 57-660, 2012
Yang, "Design and implementation of streaming media VOD websites based on PHP," Journal of Lanzhou University of Technology, vol. 22, no. 2, pp. 18-20, 2006.
Acknowledgement This work is supported by social science fund project of Liaoning province (L13DYY024).
Yao, "On the Performance Improvement of IVoD Service in P2P Networks," Journal of Fuqing Branch of Fujian Normal University, vol. 32, no. 5, pp. 29-36, 2012
Chen, et al., "Modeling and application of moderate prefetching strategy based on video slicing for P2P VOD systems," The Journal of China Universities of Posts and Telecommunications, vol. 19, no. 2, pp. 57-660, 2012
Yang, "Design and implementation of streaming media VOD websites based on PHP," Journal of Lanzhou University of Technology, vol. 22, no. 2, pp. 18-20, 2006.
Online since: September 2013
Authors: Yang Dong Hu, Xian Li Wu, Wei Jie Gao
Introduction
Methanol to olefins (MTO) is a kind of chemical technology of producing ethylene, propylene and some other products, which uses methanol made by coal or natural gas as main material [1].As a technology of low carbon olefins production with non-oil resource synthesis, this technology develops rapidly .There are two series of catalysts widely used in MTO including ZSM-5 and SAPO [2,3].
With the use of a new generation of modified SAPO zeolite catalyst, Dalian Institute of Chemical Physics, Chinese Academy of Sciences and Sinopec have developed the DMTO and SMTO processes respectively-both have been put into production successfully.
Vol.29 (1999), p.191 [4] Jie Zhu, Yu Cui, Yuanjun Chen, Huaqun Zhou, Yao Wang and Fei Wei: CIESC Journal Vol.07 (2010), p.1674 (In Chinese) [5] Chen Li, Jixia Li, Jun Li and Haibin Yu: Chemical Industry and Engineering Process Vol.S1 (2010), p.315 (In Chinese) [6] Dongming Zhang: Chemical Industry Vol.06 (2012), p12 (In Chinese) [7] Ali Taheri Najafabadi, Shohreh Fatemi, Morteza Sohrabi and Maede Salmasi: J.
Vol.30 (2012), p. 267 [10] Ping Zhu, Xiao Feng and Shan Li: Journal of Xi’an JiaoTong University Vol.01 (1998), p.95 (In Chinese) [11] Minfei Lu, Xiao Feng: Petrochemical Technology & Application Vol.05 (2007), p.420 (In Chinese) [12] Xianli Wu, Yangdong Hu and Lianying Wu:CIESC Journal Vol.05 (2013), in press(In Chinese)
With the use of a new generation of modified SAPO zeolite catalyst, Dalian Institute of Chemical Physics, Chinese Academy of Sciences and Sinopec have developed the DMTO and SMTO processes respectively-both have been put into production successfully.
Vol.29 (1999), p.191 [4] Jie Zhu, Yu Cui, Yuanjun Chen, Huaqun Zhou, Yao Wang and Fei Wei: CIESC Journal Vol.07 (2010), p.1674 (In Chinese) [5] Chen Li, Jixia Li, Jun Li and Haibin Yu: Chemical Industry and Engineering Process Vol.S1 (2010), p.315 (In Chinese) [6] Dongming Zhang: Chemical Industry Vol.06 (2012), p12 (In Chinese) [7] Ali Taheri Najafabadi, Shohreh Fatemi, Morteza Sohrabi and Maede Salmasi: J.
Vol.30 (2012), p. 267 [10] Ping Zhu, Xiao Feng and Shan Li: Journal of Xi’an JiaoTong University Vol.01 (1998), p.95 (In Chinese) [11] Minfei Lu, Xiao Feng: Petrochemical Technology & Application Vol.05 (2007), p.420 (In Chinese) [12] Xianli Wu, Yangdong Hu and Lianying Wu:CIESC Journal Vol.05 (2013), in press(In Chinese)
Online since: October 2011
Authors: Yuan Xun Zhang, Qian Tang, Xian Zhi Ye, Abebe Misganaw
Fig.1 Three dimensional view of twin screw pump
Fig.2 Schematic diagram of twin screw pump tooth profile curves
The following data are taken for the analysis of the twin screw pump:
Table 1 General data of twin screw pump
Material
Rotational speed
Temperature
Pressure
Case
Rotors
1000-3000rpm
Inlet
Outlet
Inlet
Outlet
Cast iron
Stainless steel
≦300K
≦300K
50kpa
0.8-1.6Mpa
Boundary Condition
The fluid motion generated by two rotating screw threads inside a screw pump can be described by the Navier-Stokes equation.
Acknowledgment This research was sponsored by the Natural Science Foundation of China (50875268) and the Key Scientific and Technological Project of Chongqing(2011GGB240)for providing the funding support.
Alves et al, “Fluid flow in a screw pump oil supply system for reciprocating compressors” International journal of refrigeration XXX (2010) 1-10 [3] C Feng, “Thermodynamic performance simulation of a twin-screw multiphase pump,” Proc Instn Mech Engrs Vol 215 Part E, pp157-163, E01900, IMechE 2001
Wang, “CFD Numerical Simulation and Experimental Study of Effects of Screw-Sleeve Fitting Clearance upon Triangular Thread Labyrinth Screw Pump (LSP) Performance,” Journal of Applied Fluid Mechanics, Vol. 3, No. 1, pp. 75-81, 2010
[6] V.Burenin “Screw Pumps for the Oil refining, Petrochemical and Chemical Industries,” Journal of Chemical and Petroleum Engineering, Vol. 38, Nos. 9–10, 2002
Acknowledgment This research was sponsored by the Natural Science Foundation of China (50875268) and the Key Scientific and Technological Project of Chongqing(2011GGB240)for providing the funding support.
Alves et al, “Fluid flow in a screw pump oil supply system for reciprocating compressors” International journal of refrigeration XXX (2010) 1-10 [3] C Feng, “Thermodynamic performance simulation of a twin-screw multiphase pump,” Proc Instn Mech Engrs Vol 215 Part E, pp157-163, E01900, IMechE 2001
Wang, “CFD Numerical Simulation and Experimental Study of Effects of Screw-Sleeve Fitting Clearance upon Triangular Thread Labyrinth Screw Pump (LSP) Performance,” Journal of Applied Fluid Mechanics, Vol. 3, No. 1, pp. 75-81, 2010
[6] V.Burenin “Screw Pumps for the Oil refining, Petrochemical and Chemical Industries,” Journal of Chemical and Petroleum Engineering, Vol. 38, Nos. 9–10, 2002