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Online since: May 2011
Authors: Xiao Ping He, Hai Lin Wang
Test condition: the speed is (1450±50) r/min, the material of balls is GCr15 bearing steel, the diameter of balls is 12.7 mm, and the start temperature is home temperature.
Acknowledgment This work was financially supported by National Nature Science Foundation of China (No.10602019).
Webster: Proceedings of the Institution of Mechanical Engineers, Part J (Journal of Engineering Tribology) Vol.222(2008), p.315 [4] K.
Acknowledgment This work was financially supported by National Nature Science Foundation of China (No.10602019).
Webster: Proceedings of the Institution of Mechanical Engineers, Part J (Journal of Engineering Tribology) Vol.222(2008), p.315 [4] K.
Online since: October 2011
Authors: Ji Ying Zhu, Wei Li, Rui Xia Shen
Solid anaerobic digestion (SAD), that can dispose high solid content wastes of 20%-50%, has been one important choice for many countries in solving solid waste with its incomparable advantages, such as wide raw material sources, low water and energy consumption, operation process stability and little bad smell emission.
Acknowledgements This work was financially supported by Chinese National Natural Science Foundation (51008185), and Youth Support Project of Shandong University of Technology (4072110011).
Chang: Journal of Ecology and Rural Environment, Vol. 24-2(2008), p.76 (in Chinese) [2] S.
Acknowledgements This work was financially supported by Chinese National Natural Science Foundation (51008185), and Youth Support Project of Shandong University of Technology (4072110011).
Chang: Journal of Ecology and Rural Environment, Vol. 24-2(2008), p.76 (in Chinese) [2] S.
Online since: September 2012
Authors: Bing Guo
The structure parameters is set beforehand: elastic modulus of soil nail at the first two rows En is 200×106kPa and the steel diameter d1 is 20mm; elastic modulus of steel tube at the last three rows E12 is 100×106kPa and the steel tube diameter d1 is 20mm; elastic modulus of material used as mixing pile, EM, is 100MPa, poisson ratio, μM, is 0.30 and unit-thickness area AM is 0.05m2;normal stiffness and shear stiffness of interface element are 40000 kN/m and 100kN/m;ground overload is 50kN/m.
Journal of Zhengzhou University (Engineering Science)26(3):26-33
Journal of Zhengzhou University (Engineering Science)26(3):26-33
Online since: November 2012
Authors: Ling Cao
Design and Optimization of Elastic Diaphragm in Miniature High-Temperature Pressure Sensor
Ling Cao
Department of Mechanical and Electrical Engineering, Baoji University of Arts and Sciences, Baoji 721016, Shaanxi, P.R.
Meanwhile, the maximum stress of the diaphragm which can withstand is far lower than the material yield strength as the diaphragm area smaller, so the diaphragm can not easily breakage and deformation when pressure applied on it.
Deng: Journal of Northwestern Polytechnical University, Vol. 26 (2008) No.6, p.782.
Meanwhile, the maximum stress of the diaphragm which can withstand is far lower than the material yield strength as the diaphragm area smaller, so the diaphragm can not easily breakage and deformation when pressure applied on it.
Deng: Journal of Northwestern Polytechnical University, Vol. 26 (2008) No.6, p.782.
Online since: January 2011
Authors: Jing Song Shan, Zhong Yin Guo
Study On Joint Deflection of Existing Joint Plain Concrete Pavement Upon Adoption of Hot Mixture Asphalt Overlay
Jingsong Shan 1,aand Zhongyin Guo2
1School of Transportation Engineering, Tongji University, Shanghai of China, Postal code 201804
Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation (Shandong University of Science and Technology), Qingdao of China, Postal code 266510
2School of Transportation Engineering, Tongji University, Shanghai of China, Postal code 201804
acyhsjs@163.com
Keywords: Joint plain concrete pavement, Asphalt overlay, Joint deflection, Spring element, Shear stress, Deflection criterion
Abstract.
The equation (2) and (3) can be given by; (2) (3) where: =shear stress ks =elastic coefficient of spring Δ =defferential movements of corresponding nodes at the joint =shear strain between the slabs b =average distance of nodes Introducing (3) into (2) yields (4) By the transpose of ks, equation (4) becomes (5) When the value of ks is close to equation (5), the material property of joint is similar to cement concrete slab and no differential movements occur at the joints under traffic loading.
Sun: China Civil Engineering Journal, Vol. 34, (2001) p. 45 [4] X.
The equation (2) and (3) can be given by; (2) (3) where: =shear stress ks =elastic coefficient of spring Δ =defferential movements of corresponding nodes at the joint =shear strain between the slabs b =average distance of nodes Introducing (3) into (2) yields (4) By the transpose of ks, equation (4) becomes (5) When the value of ks is close to equation (5), the material property of joint is similar to cement concrete slab and no differential movements occur at the joints under traffic loading.
Sun: China Civil Engineering Journal, Vol. 34, (2001) p. 45 [4] X.
Online since: October 2011
Authors: Xu Yan, Yun Jing Nie, Tie Ying Li
Acknowledgement
This research is supported by National Natural Science Foundation of China (No. 50978178).
Advanced Material Research.vols.163-167(2011), p.701 [3] Zhong Fan, Xianming Liu, Tianbing Hu.
Journal of Building Structures.vol.28(4) (2007), p.134 (in Chinese) [4] Xiaoqiang Cui, Yanlin Guo, Keming Ye.
Advanced Material Research.vols.163-167(2011), p.701 [3] Zhong Fan, Xianming Liu, Tianbing Hu.
Journal of Building Structures.vol.28(4) (2007), p.134 (in Chinese) [4] Xiaoqiang Cui, Yanlin Guo, Keming Ye.
Online since: January 2014
Authors: Liang Li
By the tool deflection compensation, we can make residual material removal knife, take the knife to ensure a thin wall thickness accuracy.
2 Processing Examples and Results
In order to verify NC tool deflection compensation feasibility, we arranged some experiments.
References [1] Hiroyasu IWABE, Masaki MIZUOCIH and Kazuhiro YOKOYAMA, Study on Machining Accuracy of Thin Wall Workpiece by End Mill, Japan Society of Mechanical Engineers Volume 63, No. 605 (1997.1) [2] J.Tlusty, S.Smith and J.Badrawy, Design of a High Speed Machine for Aluminum Aircraft Parts, Manufacturing Science and Technology, Vol.2/1997 [3] S.Smith, D.Dvorak, Tool path strategies for high speed milling aluminum workpiece with thin webs, Mechatronics 8 (1998) 291-300 [4] Hauki OBARA et al, A Method to Machine Three-Demensional Thin Parts, Initiatives of Precision Engineer ing at The Beginning of Millennium 2001 [5] Kline,WA, Devor, RE, and Lindberg, R, , The Prediction of Cutting Forces in End Milling with Application to Cornering Cuts, International Journal of Machine Tool Design and research, 22(1):7-22. (1982)
References [1] Hiroyasu IWABE, Masaki MIZUOCIH and Kazuhiro YOKOYAMA, Study on Machining Accuracy of Thin Wall Workpiece by End Mill, Japan Society of Mechanical Engineers Volume 63, No. 605 (1997.1) [2] J.Tlusty, S.Smith and J.Badrawy, Design of a High Speed Machine for Aluminum Aircraft Parts, Manufacturing Science and Technology, Vol.2/1997 [3] S.Smith, D.Dvorak, Tool path strategies for high speed milling aluminum workpiece with thin webs, Mechatronics 8 (1998) 291-300 [4] Hauki OBARA et al, A Method to Machine Three-Demensional Thin Parts, Initiatives of Precision Engineer ing at The Beginning of Millennium 2001 [5] Kline,WA, Devor, RE, and Lindberg, R, , The Prediction of Cutting Forces in End Milling with Application to Cornering Cuts, International Journal of Machine Tool Design and research, 22(1):7-22. (1982)
Online since: September 2014
Authors: Xue Qing Tang, Pei Cheng Wu, Shou Cai Ma
Introduction
Light steel has been more and more applied to adding storey and reinforcement project as a kind of new material, because of its good mechanical performance, as well as the characteristics of high strength and light weight.
Acknowledgement This work was financially supported by the the science and technology projects of Housing and construction department of Gansu province in 2012--- “Design research of strengthening and seismic on the light steel storey adding structure, which based on concrete structure”(project number JK2012-17).
Journal of Vibration and Shock, Vol.2(1985)
Acknowledgement This work was financially supported by the the science and technology projects of Housing and construction department of Gansu province in 2012--- “Design research of strengthening and seismic on the light steel storey adding structure, which based on concrete structure”(project number JK2012-17).
Journal of Vibration and Shock, Vol.2(1985)
Online since: September 2012
Authors: Chu Hui Liu
MACHINING SECURITY EVALUATION
(a) acceptable (b) unacceptable
Fig.4 Probable machining problem of initial joint hole
As shown in Fig.4 (b), if orientation error of a wing-fuselage joint is too big, part of its initial connecting hole will have no material to be machined in FMP.
Journal of Zhejiang University SCIENCE A, 10(11):1624-1630
Journal of Zhejiang University SCIENCE A, 10(11):1624-1630
Online since: October 2014
Authors: Kuang Cheng Li, Zheng Liu, Huai Bin Yang, Yan Liu
When a certain temperature, if the plate material and structure of the battery is determined, then based on Nernst equation, the balance emf E of the lead-acid battery depended on electrolyte activity a(H2SO4) and water activity a(H2O), that is shown in Formula 6[7]
Master of Dissertation of University of Electronic Science and Technology of China,2003
Ekdunge, A simpli moed model of the lead/acid battery, Journal of Power Sources 1993:251-262
Master of Dissertation of University of Electronic Science and Technology of China,2003
Ekdunge, A simpli moed model of the lead/acid battery, Journal of Power Sources 1993:251-262