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Online since: December 2011
Authors: Hong Sen Yan, Wen Chao Li
Key Laboratory of Measurement and Control of Complex Systems Engineering, Ministry of Education, Southeast University, Nanjing 210096, China.
2 Department of Transportation, Jiangsu University, Zhenjiang 212013, China
a zeropoint@ujs.edu.cn
Keywords: Knowledgeable manufacturing cell; Job-shop; Constraint guided; Self-learning
Abstract: The job-shop-like knowledgeable manufacturing cell scheduling is a NP-complete problem and there has not been a completely valid algorithm for it until now.
There are kinds of knowledgeable manufacturing cells in KMS such as the modules of manufacturing agents, material transportation equipment agents, industry field bus agents and scheduling decision agents etc.
IEEE Transactions on Knowledge and Data Engineering, 2006, 18(1):47-62
System Engineering—Theory & Practice, 2010, 30(6):1067-1076(in Chinese)
There are kinds of knowledgeable manufacturing cells in KMS such as the modules of manufacturing agents, material transportation equipment agents, industry field bus agents and scheduling decision agents etc.
IEEE Transactions on Knowledge and Data Engineering, 2006, 18(1):47-62
System Engineering—Theory & Practice, 2010, 30(6):1067-1076(in Chinese)
Online since: June 2013
Authors: Ovidiu Buiga
Gears are widely applied in real-world engineering application from different fields and in various working conditions, and gear design is still an ongoing activity.
diameter; x5 = 5; Brbb2 – the width of the radial ball bearing of the output shaft; x12 = 10); g37,38(x) the maximum von Misses equivalent stresses experienced by the shafts must not exceed a certain value (σabIII1 = 90 MPa for 42MoCr4 and σabIII2 = 65 MPa for C45); g39,40(x) – constraints about the fatigue life safety factors on the input/output shafts (ca = 1.5); g41,42(x) – the torsional strains in the both shafts must be below a threshold value; g43-45(x) – the bending stresses on the shafts in sections u1/0, u1/10 and u2/4 must be below certain threshold values to enable the correct functioning of the gearings and the bearings (δa = 0.025·m); g46-49(x) – the deflection at the supporting point in sections u1/4(u2/0) and u1/7(u2/8) for input/output shaft must not exceed certain allowable value (φa = 0.008 rad); g50,51(x) – the service life of the radial ball bearings must exceed a specified value; g52-55(x) the shearing and crushing stresses must not exceed a specified value on the keys
For example at ≈7 gearboxes produced, 1 is for free considering the material.
Zeyveli, A genetic approach to automate preliminary design of gear drives, Computers & Industrial Engineering, 57 (2009) 1043–1051
Antonsson, Springer Handbook of Mechanical Engineering, Springer, 2009
diameter; x5 = 5; Brbb2 – the width of the radial ball bearing of the output shaft; x12 = 10); g37,38(x) the maximum von Misses equivalent stresses experienced by the shafts must not exceed a certain value (σabIII1 = 90 MPa for 42MoCr4 and σabIII2 = 65 MPa for C45); g39,40(x) – constraints about the fatigue life safety factors on the input/output shafts (ca = 1.5); g41,42(x) – the torsional strains in the both shafts must be below a threshold value; g43-45(x) – the bending stresses on the shafts in sections u1/0, u1/10 and u2/4 must be below certain threshold values to enable the correct functioning of the gearings and the bearings (δa = 0.025·m); g46-49(x) – the deflection at the supporting point in sections u1/4(u2/0) and u1/7(u2/8) for input/output shaft must not exceed certain allowable value (φa = 0.008 rad); g50,51(x) – the service life of the radial ball bearings must exceed a specified value; g52-55(x) the shearing and crushing stresses must not exceed a specified value on the keys
For example at ≈7 gearboxes produced, 1 is for free considering the material.
Zeyveli, A genetic approach to automate preliminary design of gear drives, Computers & Industrial Engineering, 57 (2009) 1043–1051
Antonsson, Springer Handbook of Mechanical Engineering, Springer, 2009
Online since: August 2009
Authors: Z.J. Li, X.J. Yang, G.W. Cai, X.S. Liu
Liu
College of Mechanical Engineering, Guangxi University, Nanning 530004, People's Republic of
China, E-mail: glenlzj@126.com
Keywords: Francis turbine-generator, nonlinear vibration, frequency reliability
Abstract.
Fig.2 Diagram of the main shaft system of Francis turbine-generator units Turbine guide bearing Turbine runner Lower guide bearing Generator rotor Upper guide bearing Thrust bearing 34U 32U 24U 14U 17U 7 6 4 3 2 1 15U 13U 6U 2U 1U Z Y X 30U 3U 4U 12U 18U 33U 5U 7U 8U 9U 10U 11U 16U 19U 20U 21U 22U 23U 25U 26U 27U 28U 29U 31U 35U 5 OBy the finite element method, the dynamic equations of the main shaft system of Francis turbine-generator unit can be expressed as [8]: 0X 11 1 2 0 0 T T 3 0 1 2 0 T 3 0 12 0 13 0 M ( ) [ g g cos t J g sin t cos t sin t cos t sin t ] ε ε ε ε ε ε ε ε ε ε + − = ε − + + Ω − Ω + + Ω − Ω + Ω + Ω − MU K K U F MU MU MU MU MU U K U MU U K U MU U K U K U K U CU && & + (1) where M , C , K are respectively the 35th-order mass matrix, damping matrix and stiffness matrix of the system, which are related to the structural parameters and the material
Acknowledgement The research was supported by the National Natural Science Foundation of China (No.50565001), Guangxi Natural Science Foundation of China (No. 0991055) and Director Project of Guangxi Key Laboratory of Manufacturing System & Advanced Manufacturing Technology (No. 07109008_003_Z).
Cai: Chinese Journal of Mechanical Engineering Vol. 18(2) (2005), p. 302 [2] C.G.
Zhang: Journal of Hydroelectric Engineering Vol. 25(4) (2006), p. 139 (In Chinese)
Fig.2 Diagram of the main shaft system of Francis turbine-generator units Turbine guide bearing Turbine runner Lower guide bearing Generator rotor Upper guide bearing Thrust bearing 34U 32U 24U 14U 17U 7 6 4 3 2 1 15U 13U 6U 2U 1U Z Y X 30U 3U 4U 12U 18U 33U 5U 7U 8U 9U 10U 11U 16U 19U 20U 21U 22U 23U 25U 26U 27U 28U 29U 31U 35U 5 OBy the finite element method, the dynamic equations of the main shaft system of Francis turbine-generator unit can be expressed as [8]: 0X 11 1 2 0 0 T T 3 0 1 2 0 T 3 0 12 0 13 0 M ( ) [ g g cos t J g sin t cos t sin t cos t sin t ] ε ε ε ε ε ε ε ε ε ε + − = ε − + + Ω − Ω + + Ω − Ω + Ω + Ω − MU K K U F MU MU MU MU MU U K U MU U K U MU U K U K U K U CU && & + (1) where M , C , K are respectively the 35th-order mass matrix, damping matrix and stiffness matrix of the system, which are related to the structural parameters and the material
Acknowledgement The research was supported by the National Natural Science Foundation of China (No.50565001), Guangxi Natural Science Foundation of China (No. 0991055) and Director Project of Guangxi Key Laboratory of Manufacturing System & Advanced Manufacturing Technology (No. 07109008_003_Z).
Cai: Chinese Journal of Mechanical Engineering Vol. 18(2) (2005), p. 302 [2] C.G.
Zhang: Journal of Hydroelectric Engineering Vol. 25(4) (2006), p. 139 (In Chinese)
Online since: April 2015
Authors: Yun Bo Xu, Fei Peng, Xiao Wei Ju, Yong Mei Yu, Di Wu, Xiao Dong Tan, Xiao Long Yang, Zhi Ping Hu
Microstructure and Tensile Deformation Behavior of a Hot-rolled Directly Quenched and Dynamically Partitioned Steel Containing Proeutectoid Ferrite
Xiaodong Tan1, a*, Yunbo Xu1, b, Xiaolong Yang1, c, Zhiping Hu1, d,
Fei Peng1, e, Xiaowei Ju2, f, Yongmei Yu3, g and Di Wu1, h
1State Key Laboratory of Rolling Technology and Automation, Northeastern University, No. 11, Lane 3, Wenhua Road, Heping District, Shenyang, Liaoning 110819, China
2CERI LONG PRODUCT CO., LTD., A-18 Tongjinan Road Beijing Economic-Technological Development Zone, Beijing 100176, China
3School of Mechanical Engineering, Shenyang University of Chemical Technology, No. 11 Street, Shenyang Economical &Technological Development Zone, Shenyang, Liaoning 110142, China
atanxiaodong163@163.com, byunbo_xu@126.com, ce21303086@163.com,dhzp535368926@126.com, epengfeiral@126.com, fjuxiaowei@ceri.com.cn, gyongmei_yu@126.com, hwudi@mail.neu.edu.cn
Keywords: HDQ&DP steel, Proeutectoid ferrite, Microstructure, Mechanical property
Experimental Material and Procedure The steel with the chemical composition reported in Table 1 was produced using a vacuum induction furnace.
(a) (b) Fig. 6 Mechanical properties of the tested specimens Fig. 7 shows the engineering stress-strain curves and corresponding work hardening rate curves accompanying with true stress-strain curves of the tested specimens.
(b) (a) Fig. 7 Engineering stress-strain curves and work hardening rate curves accompanying with true stress-strain curves of the tested specimens Conclusions HDQ&DP processes were applied to a low carbon steel.
Experimental Material and Procedure The steel with the chemical composition reported in Table 1 was produced using a vacuum induction furnace.
(a) (b) Fig. 6 Mechanical properties of the tested specimens Fig. 7 shows the engineering stress-strain curves and corresponding work hardening rate curves accompanying with true stress-strain curves of the tested specimens.
(b) (a) Fig. 7 Engineering stress-strain curves and work hardening rate curves accompanying with true stress-strain curves of the tested specimens Conclusions HDQ&DP processes were applied to a low carbon steel.
Online since: November 2012
Authors: Yoshinori Sato, Fumika Andou, Yoshihiro Hagihara, Hiromasa Kato, Nobuhito Yoshihara, Hiroaki Okawai, Takatoshi Murase, Toshiro Iyama, Masahiro Mizuno, Shinya Tsukamoto, Naohiro Nishikawa, Takekazu Sawa
Development of Electric Rust Preventive Machining Method
- Improvement of Electric Rust Preventive Chip Sedimentation System -
N Nishikawa1, a, Y Sato1, F Andou1, T Sawa2, Y Hagihara1, H Kato1, N Yoshihara1, H Okawai1, T Murase1, T Iyama1, M Mizuno1 and S Tsukamoto3
1Faculty of engineering, iwate university, 4-3-5 ueda, morioka, iwate, 020-8551, Japan
2Department of Mechanical Engineering, Tokyo Denki University, 5 Senju-asahicho, Adachi-ku, Tokyo, 120-0026, Japan
3Faculty of engineering, okayama university, 3-1-1 tsushima-naka, okayama, okayama, 700-8530, Japan
ankawa@iwate-u.ac.jp
Keywords: electric rust preventive machining method, environmental harmonic machining, grinding, cutting, machining, machining fluid, effluent treatment, water machining, sludge, chip, iron, rust, water, recycle, turbidity, colour, water quality, sedimentation, electric rust prevention, filtration
Abstract.
Yamanaka, Cutting fluid and Grinding fluid, Saiwaishobo Co.Ltd., Japan, 1982, pp.244-264 [3] TECHNICAL RESEARCH INSTITUTE Japan Society for the Promotion of Machine Industry, Material Processing Data File Text Vol:15 (Grinding), TECHNICAL RESEARCH INSTITUTE Japan Society for the Promotion of Machine Industry, Japan, 2002, pp.32-33 [4] N.
VI Key Eng.
Yamanaka, Cutting fluid and Grinding fluid, Saiwaishobo Co.Ltd., Japan, 1982, pp.244-264 [3] TECHNICAL RESEARCH INSTITUTE Japan Society for the Promotion of Machine Industry, Material Processing Data File Text Vol:15 (Grinding), TECHNICAL RESEARCH INSTITUTE Japan Society for the Promotion of Machine Industry, Japan, 2002, pp.32-33 [4] N.
VI Key Eng.
Online since: September 2013
Authors: Gang Zhu, Jie Li, Shan Hu Yu, Yong Zhuo Li, Run Qiang Lu, Shi Chao Huo, Xin Xia
., LTD, Guangzhou 510640,China
2Guangdong Automotive Engineering Key Lab, South China University of
Technology,Guangzhou,510640,China
a106lj@163.com, b liyongzhuo123@foxmail.com, c Lightor90@qq.com, *dyushanhu@163.com,
ehsc2481632@126.com, e1096106616@qq.com,gaegzhu@scut.edu.cn
Keywords: FSC racing, pneumatic transmission system, actuators, the control unit
Abstract.
Figure 5 and figure 6 is material and installation schematic diagram.
Thermal engineering (third edition) [M].
(in Chinese) [6] Kate Gleason Formula SAE 2009 Report[EB].Kate Gleason College of Engineering,Rochester Institute of Technology,2008
Figure 5 and figure 6 is material and installation schematic diagram.
Thermal engineering (third edition) [M].
(in Chinese) [6] Kate Gleason Formula SAE 2009 Report[EB].Kate Gleason College of Engineering,Rochester Institute of Technology,2008
Online since: November 2024
Authors: Sayekti Wahyuningsih, Ika Destya Ramadhani, Tsabita Zulfihandari, Dian Maruto Widjonarko, Edi Pramono, Radianita Faradilla
The adsorption properties for most of these new materials remain largely unexplored [3].
Hydrophobic materials are known as non-polar materials with a low affinity to water, which makes them water-repelling.
Journal of Petroleum Science and Engineering, 135, 498–504. doi:10.1016/j.petrol.2015.10.006. 10.1016/j.petrol.2015.10.006 [2] Sosnin, I.
Materials Letters, 263, 127278. doi:10.1016/j.matlet.2019.127278 10.1016/j.matlet.2019.127278 [3] Ralph T.
Hydrophilic and hydrophobic materials and their applications.
Hydrophobic materials are known as non-polar materials with a low affinity to water, which makes them water-repelling.
Journal of Petroleum Science and Engineering, 135, 498–504. doi:10.1016/j.petrol.2015.10.006. 10.1016/j.petrol.2015.10.006 [2] Sosnin, I.
Materials Letters, 263, 127278. doi:10.1016/j.matlet.2019.127278 10.1016/j.matlet.2019.127278 [3] Ralph T.
Hydrophilic and hydrophobic materials and their applications.
Online since: February 2014
Authors: Geng Lie Zhou, Chi Bing Hu, Ya Zhou Wang, Juan Wen Xie
Application and Integration of Control Network and Information Network
Genglie Zhou1,2,a,Chibing Hu2,b,Yazhou Wang2,c and Juanwen Xie3,d
1Department of Software Engineering of Lanzhou Institute of Technology, Lanzhou 730050, China
2Institute of Electrical and Mechanical Engineering of Lanzhou University of Technology, Lanzhou 730050, China
3College of Technology and Engineering.LUT, Lanzhou 730050, China
azhougl266@163.com, bhucb0405@sohu.com, cwang.yzh@163.com, dxjwjzh@126.com
Key words: Fieldbus; Control network; Information network; Network integration; CAN bus; Kiln recorder
Abstract: Enterprise integrated automation is the general trend of industrial control development.
Applied remote monitoring integration technology in the fieldbus control system, through the network remote solving the problems in the process of production, can save manpower, material and financial resources, and has convenient maintenance and maintenance timely characteristics.
Computer Engineering and Design.
Applied remote monitoring integration technology in the fieldbus control system, through the network remote solving the problems in the process of production, can save manpower, material and financial resources, and has convenient maintenance and maintenance timely characteristics.
Computer Engineering and Design.
Online since: September 2014
Authors: Chen Yang Zhang, Guan Hai Yan, Yong Fei Wang, Sheng Dun Zhao
3D numerical and experimental investigation on semi-solid AlSi9Mg alloy slurry prepared by electromagnetic stirring
Chenyang Zhang1, a, Shengdun Zhao 2, b *, Guanhai Yan 3, c, Yongfei Wang 4, d
1, 2, 4School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, China
3School of Mechanical and Electrical Engineering, Xi’an University of Architecture and Technology, Xi’an, China
azhangchenyangtgzy0817@gmail.com, bsdzhao@mail.xjtu.edu.cn, cyanguanhai@126.com, dyongfeio@126.com
Keywords: semi-solid, electromagnetic stirring, AlSi9Mg aluminum alloy, numerical simulation, microstructure
Abstract.
The preparation of non-dendritic microstructures with fine and spheroidal particles uniformly dispersed in the liquid matrix is regarded as a key factor in SSM processing [4–7].
Experimental procedure and mathematical model 2.1 Material and EMS experimental procedure AlSi9Mg aluminum alloy was used as an experimental material in this study.
Atkinson, Semisolid processing of metallic materials, Mater.
Atkinson, Current Status of Semi-Solid Processing of Metallic Materials, Advances in Material Forming, Springer-Verlag, Paris, France ,2007, pp. 81-98 [9] L.B.
The preparation of non-dendritic microstructures with fine and spheroidal particles uniformly dispersed in the liquid matrix is regarded as a key factor in SSM processing [4–7].
Experimental procedure and mathematical model 2.1 Material and EMS experimental procedure AlSi9Mg aluminum alloy was used as an experimental material in this study.
Atkinson, Semisolid processing of metallic materials, Mater.
Atkinson, Current Status of Semi-Solid Processing of Metallic Materials, Advances in Material Forming, Springer-Verlag, Paris, France ,2007, pp. 81-98 [9] L.B.
Online since: August 2022
Authors: Farah Wahida binti Harun, Azzusyaza binti Azhari, Nor Liyana Zakira binti Zabidi Adi @ Zaibidai Adil, Tengku Shafazila binti Tengku Saharuddin
Hence, heterogenizing HPA is necessary and usually dispersed on support material to overcome these drawbacks.
Materials and Method Materials All reagents were analytical grade and used without further purification such as hydrotalcite (Sigma-Aldrich), microcrystalline cellulose and ethanol 99.5% (Systerma) while formic acid 98- 100% HPLC grade, tungstophsphoric acid hydrate, molybdatophosphoric acid hydrate, tungstosilicic acid hydrate, methanesulfonic acid and sodium sulfate were purchased from Merck.
Berruti, Biomass valorization for fuel and chemicals production – A Review, International Journal of Chemical Reactor Engineering. 6 (2008)
Song, Engineering polyoxometalate-intercalated layered double hydroxides for catalytic applications, Dalton Trans. 49 (2020) 3934-3941
Nascimento, Bentonites modified with phosphomolybdic heteropolyacid (HPMo) for biowaste to biofuel production, Materials, 12 (2019) 1431
Materials and Method Materials All reagents were analytical grade and used without further purification such as hydrotalcite (Sigma-Aldrich), microcrystalline cellulose and ethanol 99.5% (Systerma) while formic acid 98- 100% HPLC grade, tungstophsphoric acid hydrate, molybdatophosphoric acid hydrate, tungstosilicic acid hydrate, methanesulfonic acid and sodium sulfate were purchased from Merck.
Berruti, Biomass valorization for fuel and chemicals production – A Review, International Journal of Chemical Reactor Engineering. 6 (2008)
Song, Engineering polyoxometalate-intercalated layered double hydroxides for catalytic applications, Dalton Trans. 49 (2020) 3934-3941
Nascimento, Bentonites modified with phosphomolybdic heteropolyacid (HPMo) for biowaste to biofuel production, Materials, 12 (2019) 1431