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Online since: May 2011
Authors: Jia Zhang, Shu Bin He, Guo Liang Wang, Shu Ying Qu
Model Design Requirements and Selection The requirement of model design is that the model should verify the stiffness and deformation demand under horizontal dynamic load and minimize the material consumption.
The main material includes: Broad, 1thick, 55 wide; Batten, 2×2(), 2×4(), 2×6(), 2×8(); Modulus of elasticity is 104, strength under press is 30; Adhesive: 502 glue.
To facilitate the analysis of software, some assumption are needed as follows: (1)Material is continuous and uniform
Fig. 6 The picture of loading Conclusions Innovation is dominant power in the future development, and also the soul of science and technology.
Journal of Anhui Architecture Industry University (in Chinese), Vol. 5(2009), pp. 17-21 [2] Xinqiang Tang, Tiandi Chen, Yingping Zeng: Structure Model Experiment and Model Design(in Chinese).
Online since: September 2011
Authors: Guo Lei Si, Feng Yu Yang, Wen Jie Wang, Yu Hui Liu
At the same time, mechanical spring can not only bring metal material consumption, but also produce vibration, Noise, and influent hydraulic valves the stability and reliability of system, and the structure of the magnetic spring is Simple, it can replace the function of mechanical spring, so we study and design the permanent magnetic spring type relief valve used in the hypersonic cruise missiles, which have large application and research value.
The magnetic hydraulic relief valve (as shown in Fig. 5) consists of: 1. valve body (non-magnetic material), 2. main valve core, 3. main valve seat, 4. magnet (NdFeB), 5. valve seat (non-magnetic material), 6. adjusting ring(non-magnetic material)
Mead : Internat Journal of Mathemat Education in Science and Technology, Vol.37 (2006) No.3, p.321
Online since: April 2011
Authors: Shi Zhong Wei, Yu Cheng Zhou, Yu Lin Shi, Liu Jie Xu
Production and Grain Refinement of ASTM A668D Steel Heavy Main Shaft for Crusher Zhou Yucheng1,a, Wei Shizhong1,b, Shi Yulin2 and Xu Liujie1 1Henan Engineering Research Center for Wear of Materials, Henan University of Science & Technology, Luoyang, Henan, 471003,China; 2CITIC Heavy Industries Co., Ltd., Luoyang, Henan, 471039,China azycwlm@163.com, bwsz@mail.haust.edu.cn Keywords: grain refinement; heat treatment; modification; main shaft Abstract.
Introduction Crusher is widely used in mining, smelting, building materials, roads, railways, water conservancy, chemical industry and many other departments.
[3] Yan Xiaofeng, Zhang Hongtao, Wang Ruizhen, Pang Ganyun: Journal of Iron and Steel Research, Vol.12 (2000), No.2, P.49-53
Online since: April 2014
Authors: Ke Lun Wei, Shao Bo Zhang, Bi Jian Xiao
The concrete strength grade for twin-tower building with enlarged base is C40, foundation includes soft soil layer and bedrock layer, material properties of which shows in the table 1.
Table 1 Material properties for calculation model of twin-tower building with enlarged base Material for calculation model Density(kg/m3) Elastic modulus(GPa) Twin-tower building with enlarged base 2500 32.5 Soft soil layer 1800 0.5 Bedrock layer 2600 50 Material for calculation model poisson's ratio Damping ratio Twin-tower building with enlarged base 0.2 0.05[3] Soft soil layer 0.35 0.05 Bedrock layer 0.25 0.05 Element selection.
Journal of Building Structures, 2009(5): 102-107
Sichuan Building Science, 2005(4): 88-90
Online since: May 2013
Authors: Yi Long Hao, Shi Tao Wang, Qin Wen Huang, Yu Bin Jia
Shock reliability of comb accelerometer Jia Yubin 1, a, Wang Shitao 1,b, Huang Qinwen 2,c ,Hao Yilong1,d 1National Key Laboratory of Micro/Nano Fabrication Technology, Institute of Microelectronics, Peking University, Beijing,100871, China 2National Key Laboratory of Science and Technology on Reliability Physics and Application Technology of Component, The 5th Electronics Research Instituteof the Ministry of Industry and Information Technology, Guangzhou 51061,China aJiayubin600@sohu.com, bwangshitao@ime.pku.edu.cn c97123012@163.com dylhao@ime.pku.edu.cn Keywords: Accelerometer, shock, reliability, stress, strain, beam.
The transient area of the beam of bearing proof mass in the accelerometer structure is the same one, and vibration equation is written as (1) Where is the density of beam material, A is the area of the beam, andE is Young’ modulus of the material.The half-sine pulse waveform is used here to approximate the shock experienced by the comb accelerometer, as it is one of the most common shock waveform and provides an excellent description of the acceleration curve.
The shock amplitude is , the shock frequency is ,, the shock time is, and silicon material density is , Young’ modulus of silicon material is, the length of double-clamped beam (bearing beam) is l =357μm, the width b=60μm,the thickness h=6.4μm.
[2] Jiang Lili, Tang Jieying, Chinese mechanical engineering (Z), 212-214, (2005) [3] Lv Jinnan, Tang Jieying, Chinese Journal of functionals and devices, Vol.14, No.1 p. 103-106, 2008 [4] Xingguo Xiong, Yu-Liang Wu, and Wen-Ben Jone, IEEE International Symposium on Defect and Fault Tolerance of VLSI Systems, p.314-322 (2008)
Online since: February 2016
Authors: Svetlana Litvinchuk, Leonid A. Igumnov, Aleksandr Ipatov, A.A. Belov
Introduction Wave propagation in saturated porous media is an important issue of engineering sciences, such as geophysics, geomechanics, seismic prospecting, bioengineering etc.
The theory of two-phase porous material, which consists of elastic skeleton and fluid, was introduced by Biot [1, 2].
Default poroelastic material constants are: , , , ,, , , , that corresponds to Berea sandstone (rock).
The poroviscoelastic media modelling is based on Biot’s theory of porous material in combination with the elastic-viscoelastic corresponding principle.
Durbin, Numerical inversion of Laplace transforms: an efficient improvement to Dubner and Abate’s method, The Computer Journal. 17, (1974) 371–376.
Online since: August 2014
Authors: Cosmin Codrean, Viorel Aurel Şerban, Ion Mitelea, Dragoş Buzdugan, Ramona Lǎzar
., Brazing Alloys by Rapid Solidification, in "Encyclopedia of Materials Science and Engineering, First Supp
Cahn, Ed., Pergamon Press, 1989, [3] Rabinkin, A., Wenski, E., Ribando, A., Brazing Stainless Steel Using a New MBF-Series of Ni-Cr-B-Si Amorphous Brazing Foils, Welding Journal, Vol.77, Nr.2, 1998, p.66-75
[4] Codrean C., Mitelea I., Şerban V.A., Structural Morphology of Transformation by Vacuum Oven Brazed Joints with Amorphous Alloys , Advanced Materials Research, 23, 2007, p. 221-224
Online since: August 2013
Authors: Alica Bartošová, Janka Ševčíková, Maroš Soldán
CrVI adsorption using black nickel mud as adsorbent Maroš Soldán1, Alica Bartošová1, Janka Ševčíková1 1Faculty of Materials Science and Technology, Slovak University of Technology, Paulínska 16, 917 24 Trnava, Slovak Republic, e-mail: maros.soldan@stuba.sk Keywords: black nickel mud, adsorption, chromium.
References [1] SHAOBIN WANG - ANG, H.M. - TADÉ, M.O.: Chemosphere 72, 11, 2008, str. 1621-1635 [2] BRUNORI, C. - CREMESINI, C.- MASSANISSO, P.- PINTO, V.- TORRICELLI, L.: Journal of Hazardous Materials 117, 1, 2005, str. 55-63 [3] SOLDÁN, M. - ČAPLOVIČ, Ľ. – SOLDÁNOVÁ, Z. - BALOG, K.: Mineral resources and environment: International conference.
Online since: August 2011
Authors: Zhi Xiong Huang, Yong Zhou, De Liang Jin
Effect of Coupling Agent Modify Filler on the Electrical Properties of Sheet Molding Compounds De-liang Jin 1, a*, Zhi-xiong Huang 1, band Yong Zhong1, c 1School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070 athkjdl@yahoo.com.cn, bzhixiongh@whut.edu.cn, c258754716@qq.com ,* correspondence author Keywords: sheet molding compound; coupling agent; filler; dielectric properties Abstract.
After deposited at 32 ℃ for 24h, SMC molded material were obtained.
At last, SMC molded material was pressured at the compression pressure of 5Mpa, for 15s at 145℃ [5].
Vol. 62 (2002), p. 571-577 [4] W SUN, J H WANG, X S ZHENG: JOURNAL WUHAN UNIV TECHNOLOGY Vol. 30 (2008), p. 32-35 [5] P CHENG, S P LIU, M Y ZHANG: ACTA POLYM SIN Vol. 4 (1997), p. 492-495 [6] Young Ik Seo, Young Jung Lee, Dae-Gun Kim: Appl.
Online since: March 2013
Authors: G. Murali, D. Amaranatha Reddy, R. Venugopal, Vijayalakshmi Raguru
[7] Ping Yang, Mengkai Lu , Dong Xu, Duorong Yuan, Chunfeng Song, Suwen Liu, Xiufeng Cheng, Luminescence characteristics of ZnS nanoparticles co-doped with Ni2+ and Mn2+, Optical Materials 24 (2003) 497–502
Kulkarni, Luminescence quenching in ZnS nanoparticles due to Fe and Ni doping, JOURNAL OF MATERIALS SCIENCE 34 (1999) 6087 – 6093 [9] Hoax Tang, Guoyue Xu, Luqian Weng, Lijia Pan, Ling Wang, Luminescence and photophysical properties of colloidal ZnS nanoparticles, Acta Mater. 52(2004)1489- 1494.