Search results

Introduction Materials are classified in various types for metallic springs based on the application.
Fig. 1 Metallic open coil spring Composite materials are suitable for these applications, its wide area in which glass fiber reinforced polymer(GFRP) is one of the classification under polymer matrix composites(PMC).
References [1] Premamoy Ghosh Polymer Science and Technology: Plastics, Rubbers, Blends and Composites Tata McGraw - Hill Education (2010) 3rd Edition
Al – Qureshi Automobile Leaf Springs From Composite Materials , Journal Of Materials Processing Technology 118(2001) pp.58 – 61
[4] R.K.Rajput Strength of materials: Mechanics of solids S Chand & Co Ltd (2007) 4th Rev.

STUDY ON THE MECHANICAL PROPERTIES OF MAGNESIUM OXYSULFATE WHISKER/ABS COMPOSITES Jiang Yuzhi 1,a , Li Yanbo 1 ,Han Yuexin 2 ,Yin Wanzhong 2 1.Materials Science & Engineering College, Shenyang Ligong University, Shenyang 110168, China; 2.
So , the application of MOS in composites cause researchers'wide attention.In domestic fields,there were some reports about magnesium salt-modified PP[3],MOS-modified PVC[4],but there was little research about MOS/ABS composite mechanical properties.In this study,MOS and modified-MOS were added into the ABS matrix,respectively,then ,after mixing,making sample and mechanical properties testing,SEM was used to study the morphology of distribution,the effect of MOS modification to dispersion and mechanical properties of composite.The influence of the amount of using MOS to mechanical properties was explored,and better results were gained. 2.Experiment 2.1 Raw materials.In this experiment,the major raw materials are MOS and ABS.The MOS diameter,less than 1.0µm;the ratio of length to diameter ,about 100;purity, 98.17%.
ABS matrix materials (granulated product),made in Jilin petrochemical corporation,China. 6 1 5 4 3 2 10 20 30 40 50 60 70 0 1000 2000 3000 4000 5000 CPS 2¦È (a) SEM of MOS (×1000) (b) XRD atlas Fig.1 Morphology and XRD atlas of MOS 2.2 Sample preparation 2.2.1 MOS modification.
Contro the temperation of XCV-100 flate vulcanizing machine in a certain range,put some materials in mold,according to the standard GB/T 16421-1996,make the testing sample.The specimen size:the distance between measured marking,10mm;clamp distance,20mm;thickness,1mm;cross-sectional area, 2.0 mm2. 2.3 Peformance test standard of composite.
[3] Guoliang Tao,Fanghong Gong,Yonghong Ding:submitted to Journal of China Plastic(2003) [4] Jiang Yuzhi, Li Yanbo:submitted to Journal of Shenyang Ligong University( 2009) [5] Jiang Yuzhi, Han Yuexin, Yin Wanzhong.submitted to Journal of Metal Mine( 2008)

Safety Analysis of Cross Section of Sea Embankment and Viaduct Guangchao Pei 1, a, Xiaomin Zhang1, Jinyang Li2, b and Dongfeng Li1 1College of Mechanics and Materials, Hohai University, Nanjing 210098, China 2Chengdu Engineering Corporation, Chengdu 610072, China a554676146@qq.com, b807312289@qq.com Key words: Sea Embankment, Viaduct, Pile Foundation, Construction Sequence, Consolidation Abstract.
Such as, sea embankment with riprap materials mostly, huge weight may cause the uneven settlement of bridge pile foundation, at the same time, the bridge pile foundation also generates horizontal inhomogeneous deformation, may affect the normal work of the bridge.
When the yield function F > 0, which indicates that material yield.
Calculating section [6] as shown in Fig. 1 Fig. 1 The cross section of embankment and bridge computing section (unit: m) The Basic Data and Calculation Schemes Basic data are shown in Table 1 and the Cambridge model data are in the following Table 2 Table 1 Linear elastic material parameters Name of materials Weight （KN/m3） Elastic modulus（MPa） Poisson ratio Internal friction angle Cohesion （KPa） Dike body 18.6 10.3 0.35 Silt clay 16.4 2.44 0.35 11.5 14 Clay 16.7 2.66 0.35 11 17 Granite 23 500 0.2 Pile body concrete 24 30000 0.167 Table 2 Cambridge model material parameters Name of materials Osmotic coefficient（m/s） Parameter of modulus of resilience Silt clay 2 1 0.79 1.0E-07 1.395 0.022 0.22 1.2 Clay 3.2667 1 1 2.65E-07 1.264 0.1 1 1 Calculation schemes: The first construction scheme: sea embankment construction was completed in 90 days, bridge started construction, when the construction of pile is completed, foundation continued to consolidation 90 days
Tsinghua University press (2004) (in Chinese) [5] Fangzhen LI and Zhibo Chen: Soil Eng. and Foundation Vol.26 (2012), p.36 [6] Huiling LI: Journal of Earth Sciences and Environment Vol.34 (2012), p.103 [7] Jianhua Wang, Shaowu Gao and Jianfei Lu: Chinese Journal of Computational Mechanics Vol.20 (2003), p.169 [8] Qingwen Ren.

The use of metal or non - metal materials, in accordance with the standards of the implant material and is not sensitive to the human body, 5.
The patterns are categorized into two types of material components, i.e.: metal materials that will be made ​​using the investment casting process and non-metal materials which will be made by injection molding process.
AORN Journal, (2008) 143-158
Journal of Biomechanics, 45(1), (2012) S395
Materials and Design, 30 (2009) 398-413

The material properties of the blood are taken as follows [14]: dynamic molecular viscosity: 0.003 kg/(m.s),  density: 1060 kg/m3.
Bengtsson, D .Bergqvist, Ruptured abdominal aortic aneurysm: a population- based study, journal of vascular surgery. 18 (1993) 74–80
Libby, Braunwald’s Heart Disease: In A Textbook of Cardiovascular Medicine, Elsevier Health Sciences: Amsterdam, The Netherlands 9 (2011)
Favre, Computational comparison of the bending behavior of aortic stent-grafts, Journal of the Mechanical Behavior of Biomedical Materials. 5 (2012) 272-282
Chuter, Computational fluid dynamics within bifurcated abdominal aortic stent-grafts, Journal of Endovascular Therapy. 14 (2007) 138– 143

Study on Packaging Thermal Stress of Micromechanical Silicon Resonant Accelerometer Libin Huang1, a, Yang Gao1, Qingyun Li1, Dongrui Wang1 1School of Instrument Science and Engineering, Southeast University, Nanjing 210096, China 1Key Laboratory of Micro-Inertial Instrument and Advanced Navigation Technology, Ministry of Education ahuanglibin@seu.edu.cn Keywords: micromechanical silicon resonant accelerometer; packaging thermal stress; ANSYS; surface mounting technology (SMT) Abstract: Packaging thermal stress is harmful to the performance of the micromechanical silicon resonant accelerometer.
In order to decrease the packaging thermal stress, correlations of packaging thermal stress with the material properties, curing temperature and geometrical size of adhesive layers of adhesive materials were discussed.
In this paper, the finite element analysis method has been used to reveal the relations among properties of the adhesive material, its curing temperature, geometric parameters of adhesive layers, thermal stress and resonance frequency of the resonator, so as to research the effect of the SMT process on this accelerometer.
Different thermal expansion coefficients lead to different contraction and expansion of the connecting materials, thereby inducing the generation of stresses at the adhesive interface.
Acknowledgments This work was supported by the National Natural Science Foundation of China (No.61101021) and the Jiangsu Provincial Natural Science Foundation of China (No.BK2010401); the Foundation (No.KL201103) of Key Laboratory of Micro-Inertial Instrument and Advanced Navigation Technology, Ministry of Education, China.

Evolutionary Creation of New Molecules Pavel OSMERA1, Imrich RUKOVANSKY2 1Brno University of Technology, Department of Automation and Computer Science, Technicka 2, 61669 Brno, Czech Republic 1EPI Kunovice.
Graphene promises to be a super-material.
Evolution of Complex Systems. 8th Joint Conference on Information Sciences, Salt Lake City, Utah, USA, July 21-25, 2005
In: Proceedings of the Word Congress on Engineering and Computer Science, WCECS 2009, San Francisco, 2009 [8] Rukovansky, I., Weisser, R.
Magnetic dipole moment of electron, Journal of the Electrical Engineering, vol 59, No 8/s, I-4, ISSN 1335-3632, 2008 FEI STU

Since the natural vegetation’s ability in controlling flow erosion is relatively limited, some artificial materials are used to connect the grass’s root with soil particles more closely, such as geotextile, concrete, etc [3].
For example, three-dimensional vegetation net is one kind of these artificial materials.
[2] Ursula Stephan, Dieter Gutknecht: Journal of Hydrology, Vol. 269 (2002), p. 27~43
[5] YU Bang-yi, LV Lie-min: Journal of Sediment Research, (2) (2006), p 22-28, in Chinese
[6] ZHONG Chun-xin, ZHANG Wei: Journal of Hohai University (Natural Science), Vol. 36(2) (2008), p170-174, in Chinese

Materials and Method Experimental apparatus Figure 1 Experimental apparatus This experiment compared the migration and transformation of nitrate under two different conditions, rising water table caused by rainfall and steady water table without recharge, by laboratory experiment.
Materials The two kinds of the soil used in the test are both taken from Changping District of Beijing and the depth is 10-15m from land surface.
（In Chinese） [3] Ruan Xiaohong;Wang Chao; Zhu Liang, Migration and Transformation of Nitrogen in Water Logged Aeration Zone of Soil, Journal of Hohai ,1996,24(2):51-55.
（In Chinese） [4] Wang Chao, Experimental Study of Nitrogen Transportand Transformation in Soils, Advances in Water Science, 1997, 8(2):176-182.
（In Chinese） [5] LI Zhi-ping ; ZHANG Jin-bing; QU Ji-hong ; SHEN Zhao-li ,Influence on Shallow Groundwater by NH-4-N in Polluted River, Earth Science, 2004,29(3):363-368.

Analytical Solution of the Residual Stress when The Inflexion of the Retaining Ring is Near to the Top Qiumei Liu1, a, Junling Zheng2,b 1 Hei Bei United University, Tangshan, Hebei Province, China 2 E&A College of Hebei Normal University of Science&Technology Qinhuangdao, Hebei Province, china aliuqiumei1981@163.com, b541660489@qq.com Keywords: retaining ring residual stress displacement function analytical solution Abstract.
Science in China (Series E), 2004,47(2):229-236 [3] P.
Evaluation and analysis of residual stresses due to foreign object damage Mechanics of Materials, 2007,39(3): 199-211 [4] Ding Haojiang, Huang Dejin, Wang Huiming.
Science Letters: Analytical Solution for Fixed-end Beam Subjected to Uniform Load.
Journal of Zhejiang University Science, 2005,6A(8):779-783 [5] M.N.