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3-D Phase Object Reconstruction Using Beam-Deflection Iterative Tomography

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Chinese Journal of Lasers 1996年第2期 150-156页

作者： GAO Yiqing (nanchang institute of Aeronautical technology , nanchang 330034,China)

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关键词： beam-deflection tomography computer tomographic technique image reconstruction temperature measurement

Modification of the Recovery Behavior of TiNi Shape Memory Alloy(SMA)by Chemical Heat Treatment

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材料热处理学报 2004年第5期25卷 122-125页

作者： WANGGao-chao YANGGang HUANGYi-bin MINSi-lin CollegeofMaterialsScienceandEngineering NanchangInstituteofAeronauticalTechnologyNanchangChina

In order to improve the linear recovery behavior, TiNi shape memory alloy springs were samariumed at 550°C for 4 hours with SmH3 as samarium source, in a vacuum furnace. The phase of samariumed layer was determined by X-ray diffractometer (XRD). The fracture surface of TiNi SMA spring was investigated by scanning electronic microscope (SEM). The experimental results indicate that a thick samariumed layer composed of NiSm intermetallics existed on the fracture surface. Additionally, a new idea of linear recovery behavior in shape memory alloy (SMA) has been proposed, and its properties have been defined. The reversion measurements show that the linear recovery properties of TiNi SMA were obviously improved. The temperature range of the linear reversion (Tw) was enlarged from 4°C to 8’C, The ratio of linear reversion was increased from 54% to 75%, the proportion of linear reversion (PL) was increased from 56% to 70%, and the proportion of non-linear reversion (Ps) was decreased from 44% to 10%, but the proportion of total reversion (PT) has a little decrease. These results were attributed to the strengthening effect of NiSm intermetallics.

关键词： TiNi形状记忆合金化学热处理钐线性反转

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中国摩托车轻合金车轮整体铸造的发展与展望

特种铸造及有色合金 2002年第1期22卷 20-21页

作者：张元仕顾新南昌航空工业学院

概述了我国摩托车轻合金车轮铸造的现状 ,对车轮生产中采用的各种铸造方法进行了分析比较 ,认为低压铸造是我国摩托车轻合金车轮铸造的首选方法。

关键词：摩托车车轮铸造方法低压铸造

ANALYSIS OF WATER QUALITY IN SHALLOW LAKES WITH A TWO-DIMENSIONAL FLOW-SEDIMENT MODEL

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Journal of Hydrodynamics 2007年第4期19卷 501-508页

作者： JI Yong ZhANG Jie YAO ei ZHAO Di-hua nanchang institute of technology Nanchang 330099 China College of Environmental Science and Engineering Hohai University Nanjing 210098 China Nanjing Hydraulic Research institute Nanjing 210098 China

The governing equation for sediment pollutions was derived based on the turbulent diffusion of pollutants in shallow lakes. Coupled with shallow water equations, a depth-averaged 2-D flow and water quality model was developed. By means of the conservation law, a proposed differential equation for the change of sediment pollutants was linked to the 2-D equations. Under the framework of the finite volume method, the Osher approximate Riemann solver was employed to solve the equations. An analytical resolution was used to examine the model capabilities. Simulated results matched the exact solutions especially well. As an example, the simulation of CODMn in the Wuli Lake, a part of the Taihu lake, was conducted, which led to reasonable results. This study provides a new approach and a practical tool for the simulation of flow and water quality in shallow lakes.

关键词： sediment falling velocity turbulence flow and water quality model finite volume method approximate Riemann solver shallow water equation advection-dispersion equation

A TWO-SCALE SECOND-ORDER MOMENT PARTICLE TURBULENCE MODEL FOR GAS-PARTICLE FLOW

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Journal of Hydrodynamics 2006年第6期18卷 659-665页

作者： ZENG Zhuo-xiong ZHOU Li-xing Department of Engineering Mechanics Tsinghua University Beijing 100084 China Department of Mechanical Engineering Nanchang Institute of Aeronautical Technology Nanchang 330034China

A two-scale second-order moment two-phase turbulence model was developed and used to simulate gas-particle flow in a sudden-expansion chamber and a channel. The simulation results were in agreement with the experimental results, and the results were compared with those of the single-scale second-order moment two-phase turbulence model. Several improved features show that the two-scale model is to a certain extent better than the single-scale model, which may be attributed to the fact that particle turbulence is well characterized by the two-scale turbulence model.

关键词： gas-particle flow second-order moment model,two-scale fluctuation

DEVELOPMENT OF COMPUTER SIMULATION SOFTWAREON PHASE TRANSFORMATION DURING QUENCHING

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Acta Metallurgica Sinica(English Letters) 2000年第2期13卷 618-622页

作者： L. Chen, W. Xia and X. J. Chen Department of Materials Science and Engineering, nanchang institute of Aeronautical technology, nanchang 330034, China

A computer software to simulate the phase transformation during quenching is designed based on Avrami equation and Scheil additivity principle of incubation period. The isothermal transformation diagrams of supercooled austenite are described by cubic spline functions. This software is possess of a good graphic interface of Windows style, can simulate the whole process in austenite decomposition during continuous cooling. If the cooling rate was given, the fraction of various microstructures transformed of austenite decomposition during continuous cooling at any temperature can be calculated. The simulation results are checked with the quenching experiment of 45 steel. The results indicate that the simulation results are comparatively close to the experimental results.

关键词： quenching phase transformation computer simulation software

The Government Duty in Promoting Corporation Social Responsibility

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The Government Duty in Promoting Corporation Social Responsi...

2011 International Conference on Management Science and Intelligent Control(ICMSIC 2011)

作者： Bin LIU School of Business Administration.nanchang institute of technology nanchang institute of technology NIT nanchang China

Under the influence of economy globalization,corporation social responsibility is spreading fast all over the *** the economy developing process of our country,due to the self-interest and market competition,a lot of corporations are disobeying the code of conduct and are damaging seriously the public *** the connotation of the corporation social responsibility,this paper analyses the reasons leading to the miss of the corporation social responsibility for the corporations in our *** the concrete condition of our country,this paper is aimed to put forward the roles of government in promoting the development of corporation social responsibility.

关键词： corporation social responsibility promotion government duty

来源： cnki会议评论

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内时塑性一致切线刚度法及在胀形中的应用

塑性工程学报 2004年第1期11卷 9-12页

作者：江五贵扶名福南昌航空工业学院材料科学与工程系南昌330034 南昌大学南昌330029

介绍了位移基有限元方法 ,并在位移基有限元中嵌入了无屈服面内时本构理论 ,并提出了相应于平面应力问题的直接代入法。在求解所得到的非线性方程中 ,由于得到的非线性方程在解的邻域内高度病态 ,Newton方法收敛性得不到保证 ,采用全局... 详细信息

介绍了位移基有限元方法 ,并在位移基有限元中嵌入了无屈服面内时本构理论 ,并提出了相应于平面应力问题的直接代入法。在求解所得到的非线性方程中 ,由于得到的非线性方程在解的邻域内高度病态 ,Newton方法收敛性得不到保证 ,采用全局收敛的二分法可以得到很好的解。利用推导出的位移基内时本构有限元模拟了半球形冲头胀形问题 ,并把它的解与Mises屈服模型的解进行了比较 ,两者吻合较好 ,表明了本文方法是正确与可靠的。本文在位移基有限元中成功地嵌入了内时本构模型 ,并成功地模拟了半球形冲头胀形问题。同已有的本构模型相比 ,本文模型非常简明 ,并且易于应用。

关键词：内时位移基有限元切线刚度胀形

Research on the Logistics Outsourcing Based on E-commerce

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Research on the Logistics Outsourcing Based on E-commerce