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Online since: April 2012
Authors: Wan Ahmad Wan Yusoff, Syed Najib Syed Bahari
Over the past three decades, the science of catalyst deactivation has been steadily developing, while literature addressing this topic has expanded considerably.
The washcoat provides a high surface area material on which to distribute the active component.
Park, International Journal of Automotive Tech., Vol.10, No.6, pp.753-759, 2009
Online since: March 2006
Authors: Yu Wen Qin, Jin Long Chen, Xin Hua Ji, Yi Fu
Thus, ησ θα ηβ ww w t M = − cos )24( (9) from which ff ww wffff www w bttE tbttE tM M 2 3 2 cos 2 4 ασσ σασ θασ β η + = + = (10) Substituting equations (3) (6) (8) and (10) into equation (2) then gives ) 2( 2 2 3 2 2 ff ww www f wwf ub bttE tEt tEt P ασσ σ ασ σ + − = (11) After replace the last part in the bracket by B which is the function of beam dimensions and material properties, the complete mechanism solution of critical load for web buckling can be reduced to a simple closed form as )2( 2 2 Bt Et P ww f f ub − = σ ασ (12) For routine practical application
Narayanan, ed., Elsevier Applied Science Publishers Ltd., London,England, p:77-102 [3] Roberts, T.M., and Chong , C.K.(1981): Collapse of plate girders under edge loading.
Journal of Structural Engineering, february,1997, ASCE.
Online since: June 2013
Authors: Wen Xiang Zheng, Ming Sun, Wan Dong Han
Experimental Research on Critical Force of Crushing and Sorting Coal Mine Gangue Wenxiang Zheng 1.2, Ming Sun 1, Wandong Han 1 (1.High Vocational and Technical College,nner Mongolia University of Science and Technology,Baotou Inner Mongolia 014010; 2.College of Mining Technology of TaiYuan University of Technology,Taiyuan Shanxi 030024 ) 1666736703@qq.com Keywords: Coal and Gangue; Crushing and Sorting; Irregular Rock; Normal Distribute; Hypothetical Test; Critical Force Abstract.
Experimental Arrangements In WED - 50 type pressure testing machine and to design of the coal gangue mixed material fragmentized separation on the experiment, the acquisition of more than 500 piece of irregular coal, gangue block the static crushing experiments and dynamic crushing experiment [5-6]. testing crucially coal , waste rock size, fractures and loading methods affects on the crushing force .
[5] Baochen Liu.The size of the effect of the compressive strength of rock[J].Chinese Journal of Rock Mechanics and Engineering,1998,17( 6): 611-614
Online since: January 2013
Authors: Feng Tian, Jian Yang, Yan Jun Zhang, Zhen Jie Du, Wan Yu Gao, Sheng Jun Liu, Ming Xi Hu
The Structural Design and Experimental Research of multi-level Cushioning Packaging Storage Box Mingxi Hu1,a, Shengjun Liu1,b, Yanjun Zhang 1,c, Zhenjie Du1,d, Feng Tian﹡1,e, Jian Yang1,fand Wanyu Gao﹡1,g 1Institute of Medical Equipment, Academy of Military Medical Sciences, Tianjin, 300161, China ahumax@126.com , blsj_tj@yahoo.com.cn , camms7@126.com, dyangduhan@yeah.net, etianfeng62037@yahoo.com.cn, f jianyang03@gmail.com, gweizhuangsuogao@126.com Keywords: multi-level Cushioning; Packaging; fragility value Abstract: Aiming at the damage of package caused by emergency rescue and other severe transportation environment, a multi-level cushioning packaging storage box is proposed in this paper, the precise instrument is fixed in the box, which achieves the box-instrument integration.
Impact force is the biggest at the moment when airdrop touches down the ground, cork base, box cover and box body are made of glass fiber reinforced modified low-density polythene material by rotational molding, which has the function of absorbing vibration and cushion, when airdrop touches down the ground, the impact first acts on the cork base, the cork base performs the first force-absorption and cushion, then the impact is transferred to rubber absorber, the absorber performs the second force-absorption and cushion, then the impact is transferred to box body, the box body performs the third force-absorption and cushion, then the impact is transferred to ball steel wire rope spring, the ball steel wire rope spring performs the fourth force-absorption and cushion, then the impact is transferred to inner frame, the hydraulic damper fixed on the inner frame performs the fifth force-absorption and cushion, which is the most important in this packaging storage box, instrument fixed frame
Optimization design of MDOF package cushioning system made of polyethylene[J], Journal of Vibration and Shock, Vol.31 No.3 2012:69-72 [2] Ge Ren-wei, Ou Yang-yong.
Online since: December 2013
Authors: Qing Zou, Tao Wang, Qi Chao Zhang, Yong Li Zhang, Jian Ning Yao, Jia Qi Wu
Structures Analysis and Optimum Design of the Large Stroke Two-axis Fast Tool Servo Jiaqi Wua, Qing Zoub, Tao Wang, Qichao Zhang*,c, Yongli Zhang, Jianning Yao School of Mechanical Science and Engineering, Jilin University, Changchun, China a280177291@qq.com, bzouqing@jlu.edu.cn, czhangqichao2012@163.com Keywords: FTS; Flexible Hinge; Two Degrees of Freedom; Optimization Design.
According to the design requirements of this device and antimagnetic of voice coil motor drive, 0Cr17Ni4Cu4Nb with the allowable stress of 631MPa, elastic modulus of 191GPa, Poisson's ratio of 0.3 is chosen as the material of flexible hinge.
[3] Ho-Sang Kim,Kwang-11 Lee, Kyoung-Min Lee, Young-Bong Bang, Fabrication of free-form surfaces using a long-stroke fast tool servo and corrective figuring with on-machine measurement[J].International Journal of Machine Tools & Manufacture, 2009(49):991-997
Online since: May 2025
Authors: Izabela Skrzypczak, Marta Słowik
Acknowledgement The research leading to these results has received funding from the commissioned task entitled 'VIA CARPATIA Universities of Technology Network named after the President of the Republic of Poland Lech Kaczyński,' under the special purpose grant from the Minister of Education and Science, contract no.
Reinhardt, Fracture Mechanics of an Elastic Softening Material Like Concrete, Heron. 29 no. 2 (1984)
Shah, Fracture Energy Approach for Predicting Cracking of Reinforced Concrete Tensile Members, ACI Structural Journal. 91 (1994) 69-78.
Online since: September 2014
Authors: Sheng Li, Xiao Long Jin, Yang Yan
The material of the beam was steel and the size was 600×50×10 mm.
Hefei, University of Technology of Science and Technology of China, 2007
[4] Q.W.Zhang: Damage feature extraction and novelty detection for bridge health monitoring.Journal of Tongji University, 2003,31(03), pp 258-262
Online since: October 2013
Authors: Ke Chen, Lei Wang
For continuous box girder, β depends on the bridge span, geometry, material properties, and section form.
Acknowledgements This study is funded by Science & Technology Project (No. 2010H20) Department of Transport, Zhejiang Province, China.
Huang, Journal of Chongqing Jiaotong University, Vol. 27, 5 (2008)
Online since: January 2014
Authors: Ting Ting Liu
Introduction Energy is an important material foundation of modern economic development.
Annual heating energy consumption calculating table during working days Building name Function Structure area (m2) Normal heating hours a day On-duty heating hours a day Type Annual heating energy consumption calculation (GJ) No.5 Dormitory 1784 24 0 I = 60×20960.2×0.73×93×24×3.6×10-6 = 7377 No.6 Dormitory 1528.2 24 0 I No.7 Dormitory 1294 24 0 I No.9 Dormitory 533 24 0 I No.10 Dormitory 8881 24 0 I No.13 Dormitory 6500 24 0 I No.15 Transformer room 440 24 0 I No.8 Teaching building 2361.6 14 10 II Normal heating:= 60×28056.8×0.73×93×14×3.6×10-6 = 5760 On-duty heating: ×93×10×3.6×10-6 = 777 No.11 Training building 3411 14 10 II No.12 Teaching building 2471 14 10 II No.14 Bathroom 714.3 14 10 II No.1 Office 6903.9 14 10 II No.2 Teaching building 6342 14 10 II No.4 Science and technology 4182 14 10 II No.3 Dining room 1671 14 10 III Sum 13914 Energy saving rate evaluation of time and zone control heating.
Journal of HV&AC,2013,43(6):109-112
Online since: July 2014
Authors: Zheng Hua Huang, Qi Lin Zhang
Nowadays, as roof and metope material is becoming more and more light, both top chords and bottom chords of plane tubular truss may subject to tension or compression.
Acknowledgements This work was supported by Science and Technology Commission of Shanghai, Shanghai ,China.
Journal of shanghai jiaotonguniversity.Vol.28,Supplement. 1994 (in Chinese) [5]Bouwkamp, J.
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