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Online since: August 2014
Authors: Yong Feng Xu, Jun Xie, Jie Yan, Jing Yu Zhang, Meng Chen
There are 30 section models for the bar to choose from:{5, 6.3, 8, 10, 12.6,14a,14b,16a,16,18a,18,20a,20,22a,22,25a,25b, 25c,28a,28b,28c, 32a,32b,32c,36a,36b,36c,40a, 40b, 40c}.See the geometric properties of section models in reference [6]. the modulus of elasticity of material E=200Gpa,the allowable tensile stress of material [σ]=120Mpa, the specific gravity of material ρ=77kN/m3 , the largest allowable value of the lateral displacement [δ]=50mm.Working condition1:distributed load born by all beam elements q1=14kN,distributed load born by left column elements q2=1kN;working condition2:distributed load born by all beam elements q1=14kN,distributed load born by right column elements q3=1kN.The optimized result is in Table 1: Table1 Optimal Result of Frame Structure Choosen unit number Basic genetic algorithm Fibonacci genetic algorithm Combined shape genetic algorithm (1), (2) 14b 14b 14a (3), (5) 12.6 12.6 12.6 (4) 5 5 5 (6), (7) 16a 16a 16a (8), (10) 12.6 10 10 (9) 14b 6.3 6.3 (16),
Acknowledgements This work was financially supported by the Construction & Technology Research Guiding Program of Construction Department of Hebei Province(2012-2038) and Science & Technology Research and Development guiding project of Zhangjiakou City(1221007B).
Ye: Journal of Liaoning Institute of Technology, Vol. 26 (2006), P. 311 [3] P.F.
Guo: Journal of Liaoning Institute of Technology, Vol. 23(2002), P. 1
Guan: Mechanics of materials (Higher Education Press, China 1994).
Online since: October 2014
Authors: Pawel Stefaniak, Radosław Zimroz, Monika Hardygóra, Walter Bartelmus
The data collected in the system covers variety of data (vibration acceleration, rotational speeds, electrical currents, infrared thermography, instantaneous bulk material stream, etc.) and other important parameters related to design, environmental and degradation processes.
Zimroz, Novel approaches for processing of multi-channels NDT signals for damage detection in conveyor belts with steel cords, Key Engineering Materials 569-570 (2013) 978 – 985
Labib, A decision analysis model for maintenance policy selection using a CMMS, Journal of Quality in Maintenance Engineering 10(3) (2004) 191-202
Prendergast, Implementation and benefits of introducing a computerised maintenance management system into a textile manufacturing company, Journal of Materials Processing Technology 153-154 (2004) 226-232
Zimroz, Adaptive bearings vibration modelling for diagnosis Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 6943 LNAI, pp. 248-259.
Online since: September 2011
Authors: Qi Lin Zhang, Hui Zhu Yang, Zhi Guo Chang
The main features of the software system are characterized as follows: a) to sum up materials, and to generate automatically detailed drawings, material lists, and CNC programming; b) to customize the content and detail degree of drawing and the format of CNC programming; c) to satisfy the requirements of the all stage of structure design and process stage.
Fig. 3 The flow chart for drawing The categories of drawings and documents provided by the software system include: plan drawing, elevational drawing, axonometric drawing, material list, node design documents and so on.
Acknowledgements This paper is contribution to the national science and technology research project 'Planning and building standard research for rural residence', sub-project 'Design technology and software development of structure and construction for rural residence' (2008BAJ08B06).
References [1] Charles Mcauley: Programming AutoCAD 2000 Using ObjectARX, China Machine Press, 2000,152-165 [2] CHEN Ying-shi, Journal of Tongji University, Shanghai, China, vol28, No3, P297-300.
“(in Chinese), [3] Sang-Ho Lee and Yeon-Suk Jeong, Automation in Construction, Volume 15, Issue 2, March 2006, Pages 212-228 [4] Weiyin Ma etc., Computer-Aided Design, Volume 36, Issue 10, 1 September 2004, Pages 903-928 [5] Chao Caixia, Wei Yongle, Journal Of Mechanical Transmission, 2009, 33(3) [6] Information on http://www.amscontrols.com/
Online since: December 2012
Authors: Bao Ji Ma, Yu Lian
Triangle measuring method was not affected by the influence of the material structure, only for position sensitive.
Because the tested object is the metal materials, so the eddy current sensor is sensitive to grinding wheel.
Red copper was chosen as the cathode material, because it is insulated fully with grinder.
Acknowledgements The work is supported by industrialization projects (09JC15) of the education department of Shaanxi and industrial research project (2009K07-08) of science and technology department of Shaanxi Province in China.
In Chinese [8] Bing Lin, Chunhe Zhang, Yansheng Xu: Journal of TianJing University, vol.32, No.1, (1993).
Online since: May 2014
Authors: Ying Hong, Li Ze Tang
Experiment Materials Chitosan (Sinopharm Chemical Reagent Co.
Escherichia coli, Staphylococcus aureus were provided by Hunan Normal University College of life science.Kraft paper(quantitative 150g/m2) was provided by Packaging Technology Laboratory of Hunan University of Technology.
Tan, Research Progress of Quaternary Ammonium Salt Coupled Chitosan Antibacterial ,J.New Chemical Materials.39(2011)13-15
Journal of Hunan University of Technology,25(2011)6-8
Guan,The Influence Factors of Chitosan Antibacterial Activity ,J.Chinese Journal of Applied Chemistry, 17(2000)558-561.
Online since: February 2012
Authors: Gang Wang, Hong Chen, Fang Wang
Analysis on Static Stiffness of Synchronization Torsion Bar Based on Finite Element Method Wang Gang1,a, Wang Fang2,b, Chen Hong3,c 1Department of Science & Technology, Xi’an Technological University, Xi’an 710032, China 2,3School of Mechatronic Engineering, Xi’an Technological University, Xi’an 710032, China a47139259@qq.com, bwangfang0608@sina.com, crainbaby@163.com Keywords: Synchronization torsion bar, Torque, Finite element, Static stiffness.
According to mechanics of materials, torque of cross-section can be written by (2)
Here material of bar is 45 steel, so E represents elastic modulus and is 220GPa, µ represents poisson ratio and is 0.32.
References [1]Rodríguez S.A, Quiceno F.A and Coronado J.J, “Investigation of the Failure of an Automobile Torsion Bar,” Journal of Failure Analysis and Prevention, vol.10, 2010, pp.11-17
[5]Park Yong-Bok, Yang Dong-Yol, “Analysis of Torsional Deformation by Rigid-plastic Finite Element Method Using Recurrent Boundary Conditions,” Journal of Materials Processing Technology, vol. 182, 2007, pp. 303-311.
Online since: May 2007
Authors: Hua Nan Wang, Yi Zuo, Lin Cheng, Yu Bao Li, Yuan Yuan Wang, Gang Zhou
Materials and Methods 10Ca(OH)2+6H3PO4→Ca10(PO4)6(OH)2+18H2O Calcium hydroxide and orthophosphoric acid were dissolved in water, ethanol, glycol and ethylacetate separately to prepare the hydroxyapatite crystals at a Ca/P molar ratio of 1.67.
The presence of CO32- in hydroxyapatite structure influences the decomposition, sinterability, solubility and biological reactivity when CHA is used as an implantation material.
Med., 1994, 5, 363 [6] Zuo Yi, Li Yubao, et al., Journal of Materials Science and Technology, 2003, vol.19, No.6: 628-630
[7] Anna sarczyka, Zofia Paszkiewicza, Czesława Paluszkiewicz, Journal of Molecular Structure, 744-747 (2005) 657-661.
Online since: September 2015
Authors: Dong Won Jung, D.H. Kim, Hao Yu
In this study, the forming material is HTS, and Table 1 shows the mechanical properties of the HTS.
Acknowledgement This research was supported by Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Education(NRF-2014R1A1A4A01009199).
W. kim, Journal of the Korean Society for Precision Engineering Vol.26, No.8, (2009), p.96-103
Lindgren, Journal of Materials Processing Technology, Vol.186, (2007), p.77–81
Jung : Advanced Materials Research Vol.1016, (2014), p.75-79.
Online since: July 2011
Authors: Wei Xu, Shan Shan Li, Shao Wen Du
Materials and test program SK A70 asphalt is used to produce foam asphalt at 150℃.
Therefore, cement is another binder material in foam asphalt mixture besides asphalt binder.
Y , Wu Z and Abadie C. (2003) Louisiana experience with foamed recycled asphalt pavement base materials.
International journal of pavement engineering, 2007,8(2):99-100
Journal of Tongji University(Natural Science); 2009(01):47-50
Online since: November 2012
Authors: Gang Yi Cai, Shi Xing Zhang, Yu Ping Zhu
Material and experimental The experiment samples were taken from 2A12 T4 aluminum plate.
Acknowledgements This work was supported by Natural Science Foundation of China under Grant No. 51075120 and Henan University of Technology of China under Grant No. 2009XGG006.
[2] Zhu Zhangxiao, Yao Kefu: Engineering Materials(4th Edition), Tsinghua University Publishing Press (2009) in Chinese
[5] Li Huizhong, Zhang Xinming: The Chinese Journal of Nonferrous Metals, 2009, 6:133-135
[6]Zeng Sumin: The Chinese Journal of Nonferrous Metals, 1999, 9:79-86