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Online since: August 2013
Authors: Ka Tian, Ya Nan Wang, Shi Ming Wang
Introduction Following energy crisis and environmental degradation constantly aggravated throughout the world, the ocean which has abundant resource got the attention of the world, various countries in the world had put into a large number of manpower and material resources to research and development ocean resource, our country also made unremitting endeavor.
Applied Mechanics and Materials, v 300-301, p 338-343, 2013 [2] Li zhen Zhang, Xiao sheng Yang, Shi ming Wang, et al.
Hubei Agricultural Sciences, 2011, 50(01):161-164
Polinder, Modelling and test results of the Archimedes wave swing, Proc. of the Institution of Mechanical Engineers, Part A, Journal of Power and Energy, 220-8, 2006, pp. 855-8G8 [4] Clean energy from power buoy of ocean power technologies [EB/OL]. [2008-11-07].
Online since: August 2013
Authors: Xiang Zhu, Yong Sheng Tang, Fei Xiang Li, Yao Zhao
Structural Strength Analysis of Main Crane Pedestal of the Jack-up Wind Turbine Installation Vessel Xiang Zhu1,2, a, Yongsheng Tang2 , Feixiang Li1 and Yao Zhao1 1 School of Naval Architecture & Ocean Engineering, Huazhong University of Science & Technology, Wuhan 430074 , P.R.China 2 Hudong-Zhonghua Shipbuilding (Group) Co.
The material used in the main hull and main crane pedestal is AH36 high strength steel.
Table 1 Material properties of the structure Name Pedestal Structure Ship Structure Density [Kg/] 7850 7850 Young’s Module [N/] 2.1e5 2.1e5 Poisson’s Ratio [-] 0.33 0.33 Yield stress [N/] 355 355 Boundary conditions For the considered model, the fixed boundary conditions at the cut end of the hull structure are applied as presented in Fig. 3.
This table shows all stress results to be within the maximum allowable stresses according to the material types, except that the stress concentration at the section of hull and pedestal’s link region in Load case 3 and 5.
Yan, Whole hull’s structural strength analysis of offshore wind turbine installation vessel, Journal of Ship Mechanics. 1-2 (2012) 136-145
Online since: March 2024
Authors: Pongsert Sriprom, Pornsawan Assawasaengrat, Thanasuta Limsakul, Penpichcha Bunprasert, Wasan Chokelarb
Experimental NaA zeolite was synthesized by the hydrothermal crystallization process using sodium aluminate and sodium metasilicate pentahydrate as a precursor material.
Djemal: Materials Science Forum Vol. 636-637(2010), p. 1389
Banerjee: Journal of Heat Transfer Vol. 137 (2015), p. 091013.
Online since: October 2015
Authors: Hyun Chul Kim, Tran Anh Vo, T.H. Dung
Because of these spatial and temporal gradients, in combination with thermal properties of the material used, shape and size of a machine will change in time.
Therefore, we mainly focused on two crucial factors that relate to temperature effects, i.e. material selection, loop structure.
In addition to this, it can save considerably material consumption.
Acknowledgement This research was supported by the MSIP(Ministry of Science, ICT and Future Planning), Korea, under the Global IT Talent support program (NIPA-2014-H0904-14-1001) supervised by the NIPA(National IT Industry Promotion Agency).
Spence, Kinematic and geometric error compensation of a coordinate measuring machine, International Journal of Machine Tools & Manufacture 40
Online since: October 2009
Authors: Yun Xia Hao, Suo Xian Yuan
Workpiece material: 45 steel specimen (Ф30mm, h5mm).
Wang: Materials Processing Technology, Vol. 192-193 (2007), pp.276-280
Tian: The Study of Lapping Mechanism and Surface Quality on Solid Abrasive Lapping (MS., Changchun University of Science and Technology, China 2005, pp.20-25
Tian: Journal of Changchun Institute of Optics and Fine Mechanics, Vol. 24(2001) No.01, pp.25-27.
Online since: October 2009
Authors: Xiao Mei You, Lei Meng, Ji Shuang Dai, Bang Chun Wen
When the uneven stress and material defects of the shaft are superposed, that is the main affecting factor of spindle bending.
At the same time, we know that the maximum stress of the wheel hub does not exceed the yield limit of material and the impeller is still within the scope of elastic deformation after completing interference fit.
The maximum stress of the concentration region does not exceed the yield limit of material.
Liu: Mechanical Science and Technology, Vol. 1 (2004), pp.15
Wu: Journal of Mechanical Strength, Vol. 28 (2006), pp.282
Online since: May 2014
Authors: Fumiyoshi Minami
Development of Fracture Assessment Standards in Japan with Weibull Stress Fumiyoshi Minami 1, a 1 Materials and Manufacturing Science, Graduate School of Engineering, Osaka University 2-1, Yamada-Oka, Suita, Osaka 565-0871, JAPAN aminamil@mapse.eng.osaka-u.ac.jp Keywords: ISO 27306, WES 2808, equivalent CTOD ratio, Weibull stress, constraint loss correction Abstract.
In this model, the Weibull stress, σW, defined by Eq. 1 is used as the fracture driving force of ferritic materials
[5] ISO 27306: 2009, Metallic materials – Method of constraint loss correction of CTOD fracture toughness for fracture assessment of steel components
Okabayashi, Journal of Construction Steel, 3 (1995) 387–394 (in Japanese)
Ohata, International Journal of Offshore and Polar Engineering, 21 (2011) 129–140
Online since: December 2013
Authors: Di Ming Lou, Ze Wei Zhu, Pi Qiang Tan, Zhi Yuan Hu
Acknowledgements This project Demonstration and Study of Particle Aftertreatment Technology for Diesel Vehicles was financially supported and sponsored by Shanghai Municipal Science and Technology Commission (11dz1204300).
[3] Carlo Beatrice, Silvana Di Iorio, Chiara Guido et al.: Experimental Thermal and Fluid Science.
[8] Lou Diming, Ren Jin, Tan Piqiang et al.: Chinese Journal of Automotive Engineering.
(in Chinese) [9] Di Ming Lou, Cong Shao, Zhi Yuan Hu et al.: Advanced Materials Research.
[13] Mingliang Fu, Yunshan Ge, Xin Wang et al.: Science of the Total Environment.
Online since: July 2011
Authors: Long Zheng Tong, Yun Yun Duan, Bo Wu, Ling Jing Hu
Although the diagnosis can be confirmed with high accuracy post-mortem when the available brain material can accept histopathological examination [2], it is difficult to clinically diagnose the early AD in vivo through the patient history, collateral history from relatives, and clinical observations, based on the presence of characteristic neurological and neuropsychological features and the absence of alternative conditions [3, 4].
Materials and methods Subjects.
Acknowledgements This study was supported by the National Natural Science Foundation of China (Grant No. 81071128) and the Natural Science Foundation of Beijing, China (Grant No. 7102017).
International Journal of Psychiatry Medicine, (2006) , 36 (4): p. 401–412
Science, (2000), 289 (5478): p. 457–460
Online since: February 2014
Authors: Su Mei Liu, Yun Tao Song, Kun Lu, Zhong Wei Wang
The material selection of ts panels and its cooling pipes is 3003 al after comparison[2].
Material Distribution According to above, the solid parts involved in this analysis, include all panels, cooling pipes and cover plates, are made of aluminum, while the fluid inside cooling pipes is helium.
Physical properties of material property units helium formula aluminum density [kg/m3] 2719 Specific heat [J/kg·K] 871 Thermal conductivity [W/m·K] 202.4 viscosity [kg/m·s] - Numerical Models and Methods The reynolds number involved in this analysis is about 3×105, which is in full turbulent flow region.
Acknowledgements This work was financially supported by the National Basic Research Effort (973) Foundation (2008CB717906) and Special Fund of Ministry of Science and Technology (2008GB102000).
Wang: Thermal Analysis and Experiment Research on CTB Thermal Shield of ITER FEEDER (Chinese Journal of Vacuum Science and technology, China 2009 )
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