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Online since: February 2013
Authors: Yan Jin Guan, D.Q. Zhang, L.B. Jiang, C. Wang, Z.F. Yuan, G.C. Zhang
Guan2*,b 1Shandong Electric Power Research Institute, Jinan 250002, China 2Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan 250061, China 3Jinan Central Hospital Affiliated Shandong University, Jinan 250013, China azhangduqing@163.com, bguan_yanjin@sdu.edu.cn Key words: insulator string, dynamic wind, windage yaw, finite element analysis (FEA) Abstract: The windage yaw of suspension string under dynamic wind was analyzed with the method of finite element (FEM).
Journal of Chongqing University (Natural Sciences Edition), Vol.29(2006), p.100
Online since: June 2004
Authors: Mehran Mehregany, Christian A. Zorman, Srihari Rajgopal, J. Dunning, Xiao An Fu
Zorman Department of Electrical Engineering and Computer Science Case Western Reserve University, Cleveland, Ohio 44106, USA Keywords: MEMS, micromachining, poly-SiC, Young's modulus, stress, stress gradient Abstract.
Introduction SiC is an attractive material for microelectromechanical systems (MEMS) intended for operation in harsh environments [1].
The spread in the Young's modulus data is likely due to variations Journal Title and Volume Number (to be inserted by the publisher) 3 in beam dimensions within a particular device as a result of lateral variations in the lithographic patterning and SiC etching steps.
These measurements demonstrate the favorable properties of poly-SiC as a desirable MEMS material.
Online since: June 2014
Authors: Mohammed Riabi, Bachir Achour
Bedjaoui, Computation of Friction Factor in Pipe, Larhyss Journal, 5 (2006) 197-200
Civil Engineering and Science, 1(1) (2012) 36-41
Achour, Design of Pressurized Vaulted Rectangular Conduits Using the Rough Model Method, Advanced Materials Research, 779-480 (2013) 414-419
Online since: December 2012
Authors: Xiang Yun Huang, Min Hui Zhou, Chao Yong Shen
In analysis, elastic-perfectly plastic model was thought for Q345 steel material.Vertical displacement was load on the top of upper steel frame when the bottom of lower steel frame was restrained.
Fig.7 Plastic strain distribution of specimen on condition 2 Fig.8 Plastic strain distribution of specimen on condition 3 Fig.9 Comparison of Force-displacement curves of specimen on condition 1~3 Fig.10 Elastic stiffness of specimen on condition 1 and Hook model in Sap2000 Parameters of calculation model in Sap2000 program identify The new type of anti-tension device has a very important feature, it will not offer any restrains to the upper structure above the isolation story, which can move freely in the horizontal direction or downward in the vertical direction, in the Sap2000 FEM program, the characteristic of the nonlinear link element named as Hook meets well with the new device in this paper, but the shortcoming of Hook is that material nonlinearity can’t be considered.
Acknowledgments This work was supported by National Basic Research Program of China ((973 Program) Project number 2011CB013606),((973 Program) Project number 2012CB723304)and by National Science and Technology Support Projects(Project number 2009BAJ28B03 and 2012BAJ07B02).
Journal of Civil Architectural & Environmental Engineering, 2012, 34(1):29-34
Online since: February 2012
Authors: Wen Chin Chen, Yi Chia Tai, Kai Ping Liu
[3] University Science,(1989)
Mishing, in: Diffusion Processes in Advanced Technological Materials, edtied by D.
[5] Chun-Fu Zhong and Zhi-Wu Li,(2010), “Design of Liveness-Enforcing Supervisors ViaTransforming Plant Petri Net Models of FMS,” Asian Journal of Control, Vol. 12, No. 3, pp. 240-252 [6] J.
Online since: July 2011
Authors: Jun Qing Liu, You Ning Xu, Hai Zhao
In the present work, cerium-manganese ferrite particles were via a simple precipitation method using Fe(NO3)3×9H2O, Mn(NO3)2, Ce(NO3)3×6H2O as starting materials and sodium carbonate as a precipitant agent.
The Arabian Journal for Science and Engineering.
Online since: May 2011
Authors: Shu Fang Zhou, Jing Jing Wang, Chuan Shan Zhao
Preparation and Water Resistance of the New Water Epellent Agent of Paper Lunch Boxes Shufang Zhou,Chuanshan Zhao and Jingjing Wang Key Lab of Paper Science and Technology of Shandong Province, Shandong Institute of Light Industry, Jinan, 250353, China zsf-happy@163.com Keywords: sizing synergist; water repellent agent; water resistance; contact angle; paper lunch boxes Abstract: In this paper, a kind of sizing synergist,AKD,cationic rosin(CRS) and oil resistance agent were mixed in different proportions, we make it as a kind of new water repellent agent ,and for internal sizing.
Experimental Materials Softwood pulp:water ratio is 73%,AKD, CRS, domestic water repellent agent, sizing synergist, imported oil resistance agent, PAE (Laboratory homemade),Al2(SO4)3 Motor stirrer:JJ-1, Thermostatwaterbath, PTI Rapid-Kothen:Model PK-3A,Contact angle measurement apparatus: JC2000C1, Synthesis of water repellent agent A kind of sizing synergist,AKD,CRS and oil resistance agent were mixed in different proportions,as the new water repellent agent.
The choice and use of water repellent agent and oil resistance agent for paper boxes(In Chinese)[J].Journal of China Packaging Industry , 1999, (65) [2] Bobu E.Old and new aspects on the AKD sizing system[J].
Online since: January 2014
Authors: Xiao Qing Ren, Fan Liang Kong, Tao He, Lu Bin Hang
Based on ANSYS large diameter metallic high-speed rotating disk modal analysis KONG Fanliang1, a,HE Tao1, b,HANG Lubin1, c ,REN Xiaoqing1, d 1 Address: Shanghai University of Engineering Science, China, 201620 a email: kfl1989@126.com, bemail: hetao_cn@126.com c email:hanglb@126.com, d email:renxiaoqing_cn@126.com Keywords: ANSYS; high speed disc; modal analysis; natural frequency; inherent vibration Abstract: The modal analyses for rotating disk with pre-stressed in different high speeds were made respectively based on the finite element software of ANSYS.
During the disc rotating at high speed, its large diameter, instable material and other factors, it tend to produce large-vibration, big noise, and even direct fracture, which leads to decreased reliability of the disc's work and bring unnecessary losses for company.Therefore, in order to ensure its stable and reliable structure, reducing vibration and noise, in addition to the structure on the disc stiffness strength design, it's absolutely necessary to analyze the disc's vibration modal.
ω2n +a 1ω2(n-1) +a 2ω2(n-2) +⋯+a n-1ω2 +a n=0. ⑤ K-ω2γMμγ =0. ⑥ So ⑤ and ⑥ combined, then natural frequencies and mode shapes vector or modal vectors of N high-speed rotating disk can be obtained. 2 high-speed rotating disk modal analysis 2.1 Finite element model By ANSYS finite element analysis software application of a large-diameter metallic high-speed rotating disk to establish an accurate physical model.The geometric parameters: a diameter of 700mm, the hole diameter of 100mm, and a thickness of 8mm.In order to save computing time, it is necessary to simplify the disc remove the smaller chamfer and fillets[2].Material model is EX=1.96Gpa,PRXY=0.35,ρ=1200kg/m3 .After the model is completed, using solid185 meshing on the disc, model after meshing shown in Figure 1.Try to make the thickness of the grid divided accuracy of analysis can not only meet, not to make the model too much, take up too much computer resources and
Influence analysis of stress stiffening effect of rotating whee-l disc on its modal characteristics [J] Journal of engineering design , 2009,16 (4): 292-307 [6] Ling Ling, Wang Yunmao, Wu Baihai.
Online since: August 2013
Authors: Guan Qiang Ruan, Jian Cun Liu, Wen Chao Cheng
The operating system can adapt to all kinds of driver to use, especially for beginners and handicapped people to bring the gospel. 0 Introductions Nowadays, with the development of science and technology, the development of automobile industry is also an unprecedented prosperity [1].
Focus on the editing of the program; it reflects the overall concept of the study, the principle of the system and its analysis as follows: Engine speed--r r>r0 r≤r0 V≥V0 r≥r1 V≥V0 r<r1 V<V0 r<r1 V<V0 r≥r1 P1 P2 P3 P4 P5 V=0 V≠0 analyse Microcontroller Vehicle speed- -V Fig.2 System schematic diagram Where, r and v are collected for the sensor signal value; r, V, R1 is for reference standard value, they are based on the initial set of reference materials and relevant national legal provisions, the specific values ​​need to be adjusted according to the experimental test system after forming to finalize.
,Shanghai Jiaotong University, Shanghai 20030, China), journal of shanghai Jiao Tong uiversity,10.2000
Online since: September 2014
Authors: Yi Yan Chen, Xiao Xiong Zha, Rui Juan Jiang, Sheng Zeng
The new subway cars are made with flame retardant materials.
An investigation into mysterious questions arising from the Dargue underground railway arson case through fire simulation and small-scale fire test[C].Proceedings of the 6th Asia-Oceania Symposium on Fire Science and Technology. 2004: 16-27
Journal of Loss Prevention in the Process Industries, 2008, 21(3): 287-298
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