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Online since: October 2009
Authors: Da Yu Zheng, Xiang Yi Guan, Xin Chen, Zhong Lin Zhang
Study of Flat Belt Drive Mechanics
Zheng Da-yu1,a,Guan Xiang-yi2, Chen Xin
1,Zhang Zhong-lin3
1College of Civil and Refrezeration, Harbin University of Commerce, 1, Xuehai Rd., Harbin, China
2College of Light Industry, Harbin University of Commerce, 1, Xuehai Rd., Harbin, China
3College of Mecho-tronics Engineering, Harbin Engineering University, Nantong Str., Harbin, China
a
zhengdy@hrbcu.edu.cn
Keywords: Flat Belt Drive; Inertia Force; Dynamic Equilibrium Equations; Slip Angle
Abstract.
TABLE I the v-belt calculation results Flat Belt drive transmission parameter k=0.8kN k=28kN inertia consideration method Engineering method inertia consideration method Engineering method β1=β2 1.703 1.694 1.710 1.694 Tmax (Nm) 2.03 2.22 1.84 2.22 Besides the calculation comparing, the friction forces results are needed to compare the results with different stiffness and with or without considering the inertia influence.
Belt length natural coordinate s (mm) Belt length natural coordinate s (mm) Fig. 3 k=28kN friction diagram Fig. 4 k=0.8kN friction diagram represents the belt analysis method considering the inertial, … represents the belt analysis method of engineering design (without considering inertia) From fig. 3 we can see clearly, considering the inertial influence, the slip angle tends to be bigger and the friction valued tends to be smaller.
Conclusions In summing up, it is concluded that:1) the flat belt drive dynamic equilibrium equations considering the tangential and radial inertia leads to the calculations to obtain bigger slip angle in the contact between the belt and pulley, to get smaller maximum transmission momentum carried out by the driving and driven pulleys through the belt; 2) Considering the inertia the stiffness of the flat belt is affecting the results in the way that flexible belt with small stiffness makes the slip angle to be smaller and the friction to be bigger; 3) The method presented in this paper is suitable for the high speed belt drive and the belt which is quite flexible, if not, the inertia can be ignored, one can just apply the engineering method for the belt drive calculation.
[7]Zheng Dayu, A New Method for calculating V-belt Equivalent Friction Coefficient, J. of China Mechnical Engineering,2004,15(13),1157-1159
TABLE I the v-belt calculation results Flat Belt drive transmission parameter k=0.8kN k=28kN inertia consideration method Engineering method inertia consideration method Engineering method β1=β2 1.703 1.694 1.710 1.694 Tmax (Nm) 2.03 2.22 1.84 2.22 Besides the calculation comparing, the friction forces results are needed to compare the results with different stiffness and with or without considering the inertia influence.
Belt length natural coordinate s (mm) Belt length natural coordinate s (mm) Fig. 3 k=28kN friction diagram Fig. 4 k=0.8kN friction diagram represents the belt analysis method considering the inertial, … represents the belt analysis method of engineering design (without considering inertia) From fig. 3 we can see clearly, considering the inertial influence, the slip angle tends to be bigger and the friction valued tends to be smaller.
Conclusions In summing up, it is concluded that:1) the flat belt drive dynamic equilibrium equations considering the tangential and radial inertia leads to the calculations to obtain bigger slip angle in the contact between the belt and pulley, to get smaller maximum transmission momentum carried out by the driving and driven pulleys through the belt; 2) Considering the inertia the stiffness of the flat belt is affecting the results in the way that flexible belt with small stiffness makes the slip angle to be smaller and the friction to be bigger; 3) The method presented in this paper is suitable for the high speed belt drive and the belt which is quite flexible, if not, the inertia can be ignored, one can just apply the engineering method for the belt drive calculation.
[7]Zheng Dayu, A New Method for calculating V-belt Equivalent Friction Coefficient, J. of China Mechnical Engineering,2004,15(13),1157-1159
Online since: April 2011
Authors: Mao Tian Luan, Zhong Chang Wang, Yong Ma
Experimental Study on Dynamic Compaction-Plastics Drain Board
Method in Backfill Subgrade Reinforcement
Ma Yong, Luan Maotian a, Wang Zhongchang b
Institute of Geotechnical Engineering, School of Civil Engineering, Dalian University of Technology, Dalian, 116024, China
amtluan@dlut.edu.cn, bwazoch@163.com
Key words: Backfill soil, Dynamic compaction-PDB method, Pore water pressure, Bearing capacity
Abstract.
Lots of scholars have proposed correction coefficients of Menard Formula and optimal values of plastics drain board for certain engineering examples [2].
Design of dynamic compaction test Engineering geology condition The engineering lies in the west side of the second harbor basin in Jinzhou Port, and the flat field is sea reclamation area.
Test scheme design Dynamic compaction-PDB method is adopted in the subgrade reinforcement engineering of Jinzhou Port 207B berth.
Chinese Journal of Geotechnical Engineering, Vol. 22(2000), p. 18-22
Lots of scholars have proposed correction coefficients of Menard Formula and optimal values of plastics drain board for certain engineering examples [2].
Design of dynamic compaction test Engineering geology condition The engineering lies in the west side of the second harbor basin in Jinzhou Port, and the flat field is sea reclamation area.
Test scheme design Dynamic compaction-PDB method is adopted in the subgrade reinforcement engineering of Jinzhou Port 207B berth.
Chinese Journal of Geotechnical Engineering, Vol. 22(2000), p. 18-22
Online since: May 2011
Authors: Shao Qin Zhang, Zhi Ye Su, Yan Fen Zhong
Introduction
As we all know, the retaining wall is a very important kind of structure in civil engineering.
As a typical representative of the retaining wall, the gravity retaining wall is widely used in housing construction, hydraulic engineering, railway, mining and other projects, due to its convenience and reliability.
It is believed that the optimal method based on ANSYS will be more popular in engineering structure design in the future.
Vol.1 (2001), p.15 ( In Chinese) [3] Guimin Ji and Lingfeng Lin: Foundation engineering design.
(In Chinese) [5] Zhihua Zeng and Weijian Yu: Structural and multidisciplinary optimization of engineering applications and theoretical seminars (2009).
As a typical representative of the retaining wall, the gravity retaining wall is widely used in housing construction, hydraulic engineering, railway, mining and other projects, due to its convenience and reliability.
It is believed that the optimal method based on ANSYS will be more popular in engineering structure design in the future.
Vol.1 (2001), p.15 ( In Chinese) [3] Guimin Ji and Lingfeng Lin: Foundation engineering design.
(In Chinese) [5] Zhihua Zeng and Weijian Yu: Structural and multidisciplinary optimization of engineering applications and theoretical seminars (2009).
Online since: November 2014
Authors: Wan M. Zailimi Wan Abdullah, Hishamuddin Jamaluddin, Roslan Ab Rahman, Khisbullah Hudha, Mohamad Hafiz Harun, Mohd Hanif Harun
Study the Potential Application of Smart Fluid Material and Force Tracking Control of Magnetorheological Damper
Mohd Hanif Harun1,2, a, Wan M Zailimi W Abdullah1,2 b , Hishamuddin Jamaluddin1,c, Roslan Ab Rahman1,d , Khisbullah Hudha3,e , Mohamad Hafiz Harun4,f
1Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia
2Faculty of Mechanical Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya,
76100 Durian Tunggal, Melaka, Malaysia
3Faculty of Engineering, Universiti Pertahanan Nasional Malaysia, Kem Sungai Besi,
Kuala Lumpur, Malaysia
4Faculty of Engineering Technology, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya,
76100 Durian Tunggal, Melaka, Malaysia
ahanif@utem.edu.my, bzailimi@utem.edu.my, chishamj@fkm.utm.my, droslan@fkm.utm.my, ehudha69@gmail.com,f mohamadhafiz@utem.edu.my
Keywords: Smart material; magnetorheological (MR) fluid; polynomial model; suspension damper.
Metered, Modelling and control of magnetorheological dampers for vehicle suspension systems, PhD Thesis, School of Mechanical, Aerospace and Civil Engineering, University of Manchester (2010)
J. of Structural Engineering. 2(2011) 243-272
PhD, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia (2005
Metered, Modelling and control of magnetorheological dampers for vehicle suspension systems, PhD Thesis, School of Mechanical, Aerospace and Civil Engineering, University of Manchester (2010)
J. of Structural Engineering. 2(2011) 243-272
PhD, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia (2005
Online since: July 2014
Authors: Di Liu
Study on the Anti-seismic Performance of New Swing Structure System based on PUSHOVER
Liu Di1, a
1 College of Architecture and Civil Engineering,Shangqiu Normal University,Shangqiu Henan 476000,China
aLiudi@sqnc.edu.cn
Keywords: Swing Structure System, Pushover, Opensees
Abstract.
Therefore, for a long time, mangy new structural systems, such as energy dissipation structural system, isolated structural system, recoverable functional structure system, etc. have been proposed successively on the basis of several traditional structural systems by domestic and foreign engineering technologist and scientific researchers.
According to the related requirements of the engineering practice and current seismic design of buildings in China, the performance objective of the light swing structural system is selected on the basis of the original frame structure, for further improving and guaranteeing the anti-seismic performance of the structure, namely it will not be destructed severely at 8.5 degree and collapse at 9 degree.
Earthquake Engineering and Engineering Vibration, vol. 21, no. 1(2001), pp.64-73
Engineering Mechanics, vol. 20, no.4(2003), pp.24-32.
Therefore, for a long time, mangy new structural systems, such as energy dissipation structural system, isolated structural system, recoverable functional structure system, etc. have been proposed successively on the basis of several traditional structural systems by domestic and foreign engineering technologist and scientific researchers.
According to the related requirements of the engineering practice and current seismic design of buildings in China, the performance objective of the light swing structural system is selected on the basis of the original frame structure, for further improving and guaranteeing the anti-seismic performance of the structure, namely it will not be destructed severely at 8.5 degree and collapse at 9 degree.
Earthquake Engineering and Engineering Vibration, vol. 21, no. 1(2001), pp.64-73
Engineering Mechanics, vol. 20, no.4(2003), pp.24-32.
Online since: December 2013
Authors: Chong Wen Tong, Siamak Noroozi, Abdul Ghaffar Abdul Rahman, Zubaidah Ismail, Khoo Shin Yee
Impact Force Identification by Using Modal Transformation Method for Automobile Test Rig
Abdul Ghaffar Abdul Rahman1,a, Khoo Shin Yee2,b, Zubaidah Ismail3,c,
Chong Wen Tong2,d and Siamak Noroozi4,e
1Faculty of Mechanical Engineering, University of Malaysia Pahang,
26600 Pekan, Pahang, Malaysia
2Department of Mechanical Engineering, Engineering Faculty, University of Malaya,
50603 Kuala Lumpur, Malaysia
3Department of Civil Engineering, Engineering Faculty, University of Malaya,
50603 Kuala Lumpur, Malaysia
4School of Design, Engineering & Computing, Bournemouth University,
Poole, Dorset, BH12 5BB, UK
adragrahman@yahoo.com, bmikeson.khoo@yahoo.com; khooshinyee@um.edu.my, czu_ismail@um.edu.my, dchong_wentong@um.edu.my, esnoroozi@bournemouth.ac.uk
Keywords: correlation; frequency response function; impact force identification; lightweight structure; modal transformation method; operating deflection shape
Abstract.
Gu, Calculation of dynamic impact loads for railway bridges using a direct integration method, Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit. 222 (2008) 385-398
Gu, Calculation of dynamic impact loads for railway bridges using a direct integration method, Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit. 222 (2008) 385-398
Online since: January 2012
Authors: Feng Chi Wang, Yu Zhou, Man Yuan Zhang, Xiao Jun Yin
Electrical Resistivity of Rubberized Cement-soil in Formidable Environment
Wang Fengchi1, a, Zhou Yu 2,b , Zhang Manyuan 3,c and Yin Xiaojun 4,d
1,2,3,4 School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168 China
acefcwang@sjzu.edu.cn, b471854735@qq.com, c135235944@qq.com, d 252831137 @qq.com
Keywords: Rubberized cement-soil; electrical resistivity; corrosion; freeze-thaw cycle
Abstract.
It makes great contribution to apply the RCS to practical engineering.
D: Coastal Engineering, Vol. 24-2(2005), p.48
Liu: Ground Engineering Transaction, Vol. 28-8(2006), p.1028
Liu: Sichuan University Transaction (Engineering Science Edition), Vol. 42-2(2010), p.46.
It makes great contribution to apply the RCS to practical engineering.
D: Coastal Engineering, Vol. 24-2(2005), p.48
Liu: Ground Engineering Transaction, Vol. 28-8(2006), p.1028
Liu: Sichuan University Transaction (Engineering Science Edition), Vol. 42-2(2010), p.46.
Online since: July 2014
Authors: Fu Liang Mei, Gui Ling Li
State Space Solution of Response for Piles Subjected to Lateral Loads
Fuliang Mei1,a, Guiling Li1,b
1 Institute of Civil & Engineering, Jiaxing College, Jiaxing ,Zhejiang ,314001,China
aFlmei2005@126.com , bLgljx@126.com
Keywords: soil-structure interaction, pile, state space method, foundation reaction method, tri- parameter method
Abstract: A state space method has been put forward for finding the deformations and internal forces of piles subjected to lateral loads.
References [1] H.L.Wu: Composite Stiffness Principle for Thrust Calculation of Piles & Dual-parameter Method: Bejing, China Communications Press, 2000 (in Chinese) [2] K.Yang, R.Liang Journal of Geotechnical and Geo-environmental Engineering, ASCE (2006) [3] M.H.Zhao: Journal of Hunan University (in Chinese)( 1987) [4] Z.Wang, X.N.Gong: Journal of University of Science and Technology of Suzhou (Engineering and Technology) (in Chinese)(2005) [5] W.Z.Li, M.H.Zhao,Y.M.Shen, et al: Central South Highway Engineering,(in Chinese) (2005) [6] J.
,Han J.D.Frost: International Journal fro Numerical and Analytical Methods in Geo-mechanics(2000) [7] H.Matlock, L.C.Reese: Journal of the Soil Mechanics and Foundation division ASCE (1960) [8] Z.H.Dai, P.S.Shen,J.W.Zhang: Chinese Journal of Rock Mechanics and Engineering(in Chinese)( 2004) [9] 9.W.D.Guo ,F.H.Lee: International Journal of Numerical and Analytical Methods in Geo-mechanics( 2001) [10] 10.W.Y.Shen,C.I.Teh:Journal of Geotechnical and Geo-environmental Engineering ASCE(2004) [11] 11.L.Zhang, X.N.Gong,J.L.Yu:Journal of Sichun University(Engineering Science Edition)(in Chinese) (2011)
References [1] H.L.Wu: Composite Stiffness Principle for Thrust Calculation of Piles & Dual-parameter Method: Bejing, China Communications Press, 2000 (in Chinese) [2] K.Yang, R.Liang Journal of Geotechnical and Geo-environmental Engineering, ASCE (2006) [3] M.H.Zhao: Journal of Hunan University (in Chinese)( 1987) [4] Z.Wang, X.N.Gong: Journal of University of Science and Technology of Suzhou (Engineering and Technology) (in Chinese)(2005) [5] W.Z.Li, M.H.Zhao,Y.M.Shen, et al: Central South Highway Engineering,(in Chinese) (2005) [6] J.
,Han J.D.Frost: International Journal fro Numerical and Analytical Methods in Geo-mechanics(2000) [7] H.Matlock, L.C.Reese: Journal of the Soil Mechanics and Foundation division ASCE (1960) [8] Z.H.Dai, P.S.Shen,J.W.Zhang: Chinese Journal of Rock Mechanics and Engineering(in Chinese)( 2004) [9] 9.W.D.Guo ,F.H.Lee: International Journal of Numerical and Analytical Methods in Geo-mechanics( 2001) [10] 10.W.Y.Shen,C.I.Teh:Journal of Geotechnical and Geo-environmental Engineering ASCE(2004) [11] 11.L.Zhang, X.N.Gong,J.L.Yu:Journal of Sichun University(Engineering Science Edition)(in Chinese) (2011)
Online since: July 2014
Authors: Hui Yuan
Application of Fast Mapping Techniques in Sudden Crisis
Hui Yuan1, a
1 School of Civil Engineering and Architecture, Jiangxi Science and Technology Normal University, Nanchang 330013,China
acivil163@163.com
Key words: Emergency situations, Mapping technology, Geological disasters, Accidents.
Conclusion On the one hand, disaster prevention, the engineering survey is the basis for the exploration of the design work, surveying maps and data from the survey, design and construction throughout the entire engineering process.
Disaster management is to provide timely and reliable technical support engineering design, characteristics of the surveyed area decided to implement mapping technology, the method is rapid mapping technology plays a key role.
Landslide control engineering design and construction specifications, 2004, 56-58.
Landslide control engineering exploration specification, 2008, 35-38.
Conclusion On the one hand, disaster prevention, the engineering survey is the basis for the exploration of the design work, surveying maps and data from the survey, design and construction throughout the entire engineering process.
Disaster management is to provide timely and reliable technical support engineering design, characteristics of the surveyed area decided to implement mapping technology, the method is rapid mapping technology plays a key role.
Landslide control engineering design and construction specifications, 2004, 56-58.
Landslide control engineering exploration specification, 2008, 35-38.
Online since: May 2013
Authors: Li Ping Wang, Lin Qing Huang, He Ping Zhong
Analysis on Seismic Behavior of Structures Supported by Foundations with Different Locations
Liping Wang1, a, Heping Zhong2,b and Linqing Huang1,c
1 Architectural and Civil Engineering Institute, Chongqing University of Science Technology, Chongqing 401331, China
2 China CTDI Engineering Corporation, Chongqing 400045, China
awangliping98@163.com, b10788137@qq.com, c738926108@qq.com
Keywords: seismic behavior, structures supported by foundations with different locations, story stiffness, inter-story displacement angle
Abstract.
References [1] Mianshui Rong, Xiaojun Li: Earthquake Research in China Vol. 23 (2007), p. 147 (in Chinese) [2] Hongbing Liu, Zhu Xi: World Information on Earthquake Engineering Vol. 15 (1999), p. 20 (in Chinese) [3] Yingmin Li, Liping Wang, Yao Zhao: Journal of Earthquake Engineering and Engineering Vibration Vol. 30 (2010), p. 11 (in Chinese) [4] Yingmin Li, Liping Wang, Yao Zhao: Journal of Earthquake Engineering and Engineering Vibration Vol. 30 (2010), p. 156 (in Chinese)
References [1] Mianshui Rong, Xiaojun Li: Earthquake Research in China Vol. 23 (2007), p. 147 (in Chinese) [2] Hongbing Liu, Zhu Xi: World Information on Earthquake Engineering Vol. 15 (1999), p. 20 (in Chinese) [3] Yingmin Li, Liping Wang, Yao Zhao: Journal of Earthquake Engineering and Engineering Vibration Vol. 30 (2010), p. 11 (in Chinese) [4] Yingmin Li, Liping Wang, Yao Zhao: Journal of Earthquake Engineering and Engineering Vibration Vol. 30 (2010), p. 156 (in Chinese)