bluuebunny/crossref_metadata_2025 huggingface dataset:
Experimental Research on Gravel Soil Shear Strength
Authors: Teng Wei Fu , Wang Wei
Published: January 2015

With the rise in the water level of the Three Gorges Project, accurately measuring the shear strength parameters of the Three Gorges Project shore landslide has important implications for the safety of the Three Gorges Project’s surrounding area. Due to the material of reservoir area slope is complex, are mostly loose accumulation, these loose accumulation are mainly composed by landslide deposits, eluvia material, alluvial matter, landslides, strong weathered, and material composition is soil with gravel or fragments stone, the conventional small specimens test has been impossible. Badong County has long rainy season, abundant rainfall, mudslides, landslides and other geological disasters are frequent, so measuring reservoir landslide shear strength of Badong County is particularly important. Therefore, this paper takes the gravel soil of piled crushed landslide of the third senior middle school in Badong County as the research object, through lab large-scale direct shear test to research the gravel soil strength parameters’ variation of the soil samples with different coarse soil content under different moisture conditions.
Simulation of the Pressure-Bearing Capacity Test Model in Architectural Decoration Design
Authors: Guo Li Mei , Xiao Ai Min
Published: January 2015

in architectural decoration process, pressure-bearing capacity test is the foundation of design, and is very important. To this end, a pressure-bearing capacity test method in architectural decoration design is proposed based on improved genetic algorithm. The selection, crossover and mutation operators in genetic algorithm are improved respectively. Using its fast convergence characteristics eliminate the pressure movement in the calculation process. The abnormal area of pressure-bearing existed in buildings which can ensure to be tested is added, to obtain accurate distribution information of the abnormal area of pressure-bearing. Simulation results show that the improved genetic algorithm has good convergence, can accurately test the pressure-bearing capacity in architectural decoration.
The Study on Early Cracking Mechanism of Cast-in-Place Board
Authors: Xu Jing Wei
Published: January 2015

The early age cracking of cast-in-place board has been a common phenomenon in engineering; however, the theoretical research on this kind of problems develops far behind the engineering practice on the early cracking of cast-in-place board. So it is necessary to explore the early cracking of concrete research problems from various aspects at present.
Study on Shaking Table Model Test Design Scheme of Mechanical Response of Ground Fissure Strongly under Seismic Load
Authors: Liu Ming Ming
Published: January 2015

Through this research, the design dynamic similitude relations, model material, model of soil box, loading system, measurement system of "Y" type and numerical simulation of the realization of the dynamic model test, the finite element will be prepared for the shaking table model test study on the mechanical response of ground fissures under strong earthquake.
Development of New Microalloyed Steel by Alloying with Tungsten
Authors: Zhao Jing Wei , Jiang Zheng Yi
Published: January 2015

The effects of tungsten (W) addition on the microstructure, impact toughness and tensile properties of a microalloyed cast steel were systematically investigated. The results indicate that W alloying in microalloyed cast steel plays a positive role in inhibiting dendrite during casting process, and the yield strength, ultimate tensile strength and fracture strain can be simultaneously improved after W addition. Both microalloyed cast steels with and without W additions show very low impact energies, indicating W addition has no significant effect on the impact toughness. The present work provides a possibility to develop new W-containing microalloyed steels with improved mechanical properties.
The Passenger Transfer Characteristic Analysis of Shenyang Subway Based on Comparative Analysis Method
Authors: Qian Xiao
Published: January 2015

In order to better play an important role in the subway transit system to achieve its dominant position, it is necessary to establish a good feeding system and interface transfer system. On the basis of the current study urban passenger transfer characteristics, the study of urban rail transport passenger transfer is essential. Shenyang Subway Line 1 eased the pressure on the ground transportation of city to a large extent from the completion of construction to be put into use. In this paper, inquirer survey method, induction contrast method and comparative analysis method are selected to investigate the traffic of the each site in Shenyang subway lines, and analyze the characteristics of the passenger transfer, so that the subway planning operator can be gradually improved and the operational organization can be better guided.
Research on the Design of Community Landscape Planning under Eco-House Perspective
Authors: Zhou Xu Dan , Zhao Chun Li , Qi Yue , Qi Hao , Jiang Da Wei
Published: January 2015

With the advent of the knowledge economy and the rapid development of information technology era, people's demand for the living environment has been far more than mere material comfort. In this paper, good landscape design for residential quarter not only provides appropriate living conditions for dweller, satisfies people's yearning for home, improves the quality of urban environment, but also is the main prerequisites which measure the green quality and management of the community. Landscape planning and design of residential environment exists failed plant landscape design, weak user-friendly design, ignoring landscape such as issues. We have identified the principles of landscape planning and design community, and allocation of green plants. It is the important weights that real estate developers sell their items, which is an important success factor that the real estate developers operate company, and people will pay more and more attention to the landscape design.
Extension Method to Creative Design of Highway Rock Slope Greening
Authors: Zhu Wei Wei , Tan Yang Yang
Published: January 2015

To study the creative design method for slope greening, introduced extension theory and method, took the method of new concept slope design as breakthrough point, and analyzed the feasibility and method of highway rock slope creative design using extension method. Case analysis shows that applying extension method to new concept slope design is appropriate and feasible; it can reduce the dependence on experience, inspiration and other individual ability of the creative design process. This method is expected to be used in the whole new concept highway design after further studying.
Design of Konjac Planting Machine
Authors: Chen Yi Ming , Lv Xiao Rong
Published: January 2015

In order to improve the konjak planting scale and operation efficiency, the paper designed a special application of konjac seeder in conjac plantation, the konjac planter can complete ditching, land shaping, seeding, soil covering and other operations, especially solving the problem how to make the after seed sowing isometric placement in the ditch and ensure the key problem buds are inclined .In this paper, based on the UG software, completed the simulation of 3D model design for the konjac seed metering and land shaping device two working parts.
Improvement of Drum Loose Dampening Feeder
Authors: Li Zhe Kun , Wang Zhi Jun , Xu Yong Kang , Wang Sheng Zhi , Li Wen Yuan
Published: January 2015

Based on the analysis of the structures of Drum Loose Dampening Feeder, we found some problems and carried on researches, put forward some improvements in accordance with the actual applications, and achieved significant effects.
Nonlinear Dynamic Analysis of Drill String System for Horizontal Oil Well with Different Positions of Stabilizers
Authors: Zhao Meng , Zhu Xiang Zhe , Wang Chun Lei
Published: January 2015

For the horizontal well of petroleum drilling engineering, the horizontal section of drill string was selected as a research object. Collision and friction between drill string and well wall, displacement response on the drill bit and other boundary conditions were considered in this simulated modeling. By using finite element analysis software ANSYS, the dynamic characteristics of horizontal section of drill string were calculated and discussed. The effect of different positions of stabilizers on the vibration characteristics of drill string were studied specially. The calculated results show that the installation positions of stabilizers have remarkable effects on the dynamic characteristics of drill string. It will change the lateral vibration and whirling motion of drill string remarkably. Furthermore, the reasonably installation of the stabilizers can decrease the amplitudes of lateral vibration and transient torque. Those results may provide some guidance for the vibration analysis of drill string system.
Application of Variable Damping Hydraulic Buffer in Braking Large Mass Impact Loading Problem
Authors: Tang Zhi Yin , Wu Gang , Lu Jun Yong , Li Yan Fei , Li Xiang
Published: January 2015

Aimed at braking large mass impact loading problem, a mathematical model of the multi-orifice hydraulic buffer has been established, with the use of hydrodynamics theory, hydraulic theory and engineering structural mechanics theory. Damping characteristic curves under different operating conditions have been analyzed. The problem that traditional hydraulic buffer damping characteristics could not match to different mass impact loading well has been found. By analyzing the influence of buffer cylinder structural parameters on buffer damping characteristics, a variable damping buffer has been proposed, and the problem has been verified with simulation.
Multi-Stage Centrifugal Pump Impeller Hydraulic Model Modification and Performance Analysis
Authors: Xu Yao Gang , Song Wen Wu
Published: January 2015

The multi-stage centrifugal pump run instability at the original design point, and the running operating point deviated far from the design point during the run. In order to better meet the multi-stage centrifugal pump operational requirements, through hydraulic model modification, changing the multi-stage pump design point, while the performance curve before and after the modification can be interchangeable in the flow of 150m3/h~320m3/h. The original program used 3 blades impeller. Taking into account the matching problem with pressurized water chamber, modification plan used 5 blades impeller. Analysis on the internal flow field before and after the modification was made. Through comparison the internal and external characteristics of the two plans, the analysis found that in the double volute pressurized water chamber, the flow field symmetry of 5 blades is better than the 3 blades’. The flow field symmetry can be well balanced radial force, and help to improve the instability phenomenon in operation.
Modal Analysis on the Simulation of the Missile Launchers Based on ABAQUS
Authors: Huang Cong , Jiang Yi , Zhang Heng
Published: January 2015

One of the inevitable problems in the missile launchers is vibration, which can lead to failure of missile launchers. The3D model of the missile launchers is created and the modal analysis is adopted by the ABAQUS. The results show that the missile launchers will have resonance. The vibration mode diagram of the missile launcher’s structure is analyzed and the weakness of the missile launchers was found. The theory for the missile launchers design and manufacture is provided.
Research on Key Energy Saving Techniques of Automobile Painting
Authors: Zhang Qing Liang
Published: January 2015

Based on the domestic automobile body coating technique research, key energy saving techniques in 3 aspects, i.e. painting process, painting equipment and painting management were reviewed respectively. Existing energy conservation problems in Chinese automobile body painting lines were analyzed. The key energy saving of automobile body coating was stated. It was pointed out that energy saving technique of electromechanical system is one of the most potential research direction and development prospect.
Adjustable Cross Wheel Design and Experimental Study
Authors: Wu Li Bo
Published: January 2015

Fixed distance triangular wheel is often mounted on a tool car and achieve up and down stairs function, but because of the different standards in the height and width of the stair steps, it is used with large vibration, and easy to lock, so difficult to promote it’s use. With studies, the paper put forward the adjustable cross wheel structure; the wheel can adjust the steps of stairs by changing the distance, and have better stability in using. Furthermore through the experiment, the paper proves the rationality of the design and finds the problem, proposes the solution method.
Optimal Operation of Boiler Based on Anti-Balance Algorithm
Authors: Li Xin Wei
Published: January 2015

According to the main characteristics of boiler operation process, part parameters of boiler and monitoring data, we not only can tease the relationship between various each physical quantity and the influence on the thermal efficiency of the boiler, but also be reasonable parameters and omit the complex on the minimal influence factors of heat loss, finally we use the counter balance calculation method to calculate heat loss, which is mainly aimed at the greatest effect of excess air coefficient, and we consider other major factors that affect the thermal efficiency of the boiler. According to the definition established physical model, the thermal efficiency of the boiler is optimized.
The Experimental Study and Numerical Simulation of the Gas Flow Field in the Cold Storage of Procambarus Clarkii
Authors: Li Shuo , Wang Shu Cai , Cheng Fang , Xia Gao Bing
Published: January 2015

The gas flow in the cold storage plays a very important role in the effect of cold storages of procambarus clarkii. Only the reasonable gas flow ensures the uniform temperature field.The paper uses the technique of computational fluid dynamics (CFD) to conduct the numerical simulation of the flow field and finds out the law of the distribution of the temperature field,on the basis of which the numerical simulation of non steady state of the freezing process of the frozen products is carried out.The experiments prove that the simulation results can better reflect the reality,and show that CFD tools can play an important role in the design and optimization of cold storages.
Advances in Ground Source Heat Pump Systems Applied in Most Areas of China: A Review
Authors: Wang Xin , Liu Hong , Xue Di Di
Published: January 2015

Because of the advantage on energy saving and environmental sustainable development, the ground source heat pump (GSHP) system has received the widespread attention and application in recent years.However,the difference between cooling load in summer and heating load in winter is obvious in most areas of our country,so it can cause the heat accumulation around ground heat exchanger,which will result in degradation of system performance and increment of system operating costs.To solve the problem of thermal imbalance,it is necessary to research the soil temperature field around the buried pipes in the process of system operation.This paper begins with a review of the studies about the ground source heat pump systems.This is followed by a review of various methods of enhancing the performance of heat pumps based on the thermal imbalance.And then,this paper shows some studies about ground source heat pump systems based on the groundwater seepage.
For Retrofit Applications of Biomass Briquette Industrial Boilers
Authors: Cheng Chao , Fu Guo Min , Lv Wei , Lin Xi Yu
Published: January 2015

Lower biomass briquette fuel Combustion efficiency for Stream-chain Boiler furnace burning dyeing factory,the existing Furnace arch configuration easily lead the front burning,easy to burn coal gate and ignite fuel bin.Proposed through the transformation of traditional industrial boiler feed systems,before and after the boiler arch configuration,add dedusting equipment,add the secondary air system and adjust primary air supply system to improve the boiler,which can effectively improve the combustion efficiency,to solve the question of coal gate back burning bad front wall and ignite fuel bin.Ease dust accumulation and slagging problems in the biomass boiler.
Optimization Design for Beam Structures of Rail Weld CNC Fine Milling Machine Based on Ansys Workbench
Authors: Mao Hua Jie , Shu Min , Li Chao , Zhang Bao Jun
Published: January 2015

If finite element models for beam structures of the rail weld CNC fine milling machine are built, and static analysis and modal analysis are used to model the beam structure, it can be concluded that the beam has sufficient margin in strength but lower stiffness. The beam structure is optimally designed with orthogonal test. After optimization, the beam body has been obviously improved in stiffness, and reduced lightly in weight.
Vibration Analysis of Transmission System on the Small Aquatic Harvesting Machine
Authors: Zhang Li Zhen , Lei Yi Hong , Kang Jian Liang , Yang Quan
Published: January 2015

With the rapid development of industry, the status of the eutrophication of water is becoming more and more serious. The result is that water blooms and the environment becomes worse. In order to resolve this question ,ShangHai Ocean University designed a small aquatic harvester. According to the vibration problem on the research of the transmission system of the small aquatic harvester , the text has given suggestions on how to reduce the vibration problems after taking theoretical analys from the angle of assembly error.
The Simulation Model Establishment of Single Trailing Arm Suspension Vehicle Based on ADAMS
Authors: Wang Hui , Wang Xiao Zhi
Published: January 2015

Using SGA170 mine car as prototype, this paper establishes simulation model of single trailing arm suspension vehicle steering to trapezoidal mechanism using the ADAMS software, and validates the correctness of the proposed model. It can not only effectively shorten the development cycle, reduce development costs and improve the design precision of products, but also lay a solid foundation for other the simulation software.
Coal-Rock Interface Identification Method Based on Dimensionless Parameters and Support Vector Machine
Authors: Li Yi Ming , Liu Er Meng , Xue Guang Hui , Miao Wu
Published: January 2015

In order to identify the Coal-Rock interface of mechanized caving mining, a new method based on dimensionless parameters and support vector machine is proposed. Detect the acoustic pressure signal of the tail beam of the hydraulic support, extract the dimensionless parameters of acoustic pressure signal peak factor C、pulse factor I、margin factor、skewness factor P、kurtosis factor K and form factor S to construct the feature vectors , as support vector machine training samples to establish classifier for identifying the Coal-Rock interface. The experimental result shows that feature vectors constructed by the dimensionless parameters input support vector machine can automatically identify the Coal-Rock interface. It provides a new thinking and method for the study of Coal-Rock interface identification.
Research on SVDD Network Intrusion Detection of the Optimal Feature Selection for Particle Swarm
Authors: Zhang Xiao Yu , Wei Zhen Wei , Lin Xiao
Published: January 2015

Focusing on the problem about the higher dimensionality of sample set in the intrusion detection, propose an optimized method of support vector data description (SVDD) based on particle swarm optimization (PSO) and apply it to the intrusion detection of network exception. This method adopts PSO to eliminate the superfluous parameters in SVDD and carries out dimension reduction to data; then, establish the super sphere model to detect the network intrusion data and output the results of intrusion detection. Carry out the simulation experiment based on the standard detection data set of KDD CUP' 99, and the result shows that this method, comparing with the traditional SVDD, can effectively improve the detection ratio with a smaller amount of calculation.
A Study on the Key Technology of the Online Measurement Device for Joint Internal Thread
Authors: Zhou Qiang , Shuang Zhang Qiu
Published: January 2015

This paper describes the design and realization of an online measurement device used for Joint Internal Thread. The online measurement device adopts the principle that the shaft section of two dimensional tooth profile of Joint Internal Thread was obtained with the passive contact method. A novel first derivative segmentation method based on the dynamic linear regression was used to classify and identify the two-dimensional tooth profile data. The basic and derived parameter of Joint Internal Thread was then quickly calculated. The tooth height of Joint Internal Thread was used as the traceable standard to calibrate the online measurement device. The comparison between field experiment data and manually measured data shows that the online measurement device is a rational design which works stably, shortens the measurement time largely, and improves the efficiency. The measured results satisfies the accuracy requirement.
Design of Gas Density Monitor System Based on Wireless Sensor Network
Authors: Li Zheng Dong , Feng Guang Hua , Feng Xin , Sun Qiang , Cheng Shi Liang
Published: January 2015

Aimed at the presented serious problem of mine collapse , a monitoring system for coal mine safety based on wireless sensor network is designed. The system overtakes the limitation of traditional system that the situation in mine is unknown in time. With this system, the security manager can real-time monitor the gas density of multi-location .Compared with traditional system, this system is portable and extensible and it also has advantage of physical size and power consumption. This paper describes both the whole system architecture and the structure of single node, furthermore, it also introduces the application method.
Passive Automotive Electronic Identity Pavement Covered Blind Area Problem Analysis
Authors: Li Xiao Na
Published: January 2015

With the development of Internet technology, the application of automotive electronic identification is more and more wide. Under net environment and bicycle vehicle conditions, this paper mainly analyzes the forming mechanism of blind spot on the blind area due to the electromagnetic wave multi-path rays, calculate formation mechanism of blind area within range of passive automotive electronic identity, and calculate results and compare actual reading test results, by comparing further prove the validity of the analysis.
Modeling of Single Flow Zinc-Nickel Battery for System Efficiency Improvement
Authors: Li Yan Xue , Dong Ming Chui , Zhao Peng Cheng , Han Ying Duo
Published: January 2015

In operating of a flow battery, a certain flow rate should be maintained in order to guarantee its performance. But the pump consumed power may cause significant losses for the overall battery system. In this paper, a fresh electrical model is proposed for the novel single flow zinc-nickel battery. The model consists of both battery stack part and pump power part, which consequently not only predicts accurately the battery electrical output, but also estimates the pump consumed power at different electrolyte flow rate. Based on the validated model, the influence of pump power on flow battery’s system efficiency can be evaluated at different operating modes. At last, possible means to further improve the system efficiency of battery is discussed.
Research on Automatic Identification of MCS Based on Infrared Satellite Cloud Image of FY2D
Authors: Duan Lian , Wu Jun Jie , Liu Fan
Published: January 2015

The mesoscale convective system (MCS) has a great influence on the Aviation flight, this article used infrared satellite cloud image data detected by FY2D and eigenvalue method to research MCS’ identification to accurately identify the MCS cloud. Firstly, satellite image binarization processing and edge detection ,to extract the large boundary gray gradient cloud. Then, calculating cloud’s geometric center coordinates , cloud size ,centroid coordinates, the average TBB values, ellipticity and some other eigenvalue and eigenvector. Finally, selecting those which meet to the MCS identification criterion to realize the automatic identification of MCS.
Parametric Design and Kinematics Simulation of the Roller Gear Indexing Cam Mechanism
Authors: Gong Qing Shan , Wu Yue Min , Liu Shan Shan , Zhou Hong Xun
Published: January 2015

The working profile of the roller gear indexing cam is sophisticated space curved surface. It is difficult to get the 3D model with conventional cartography. In this paper, a parameter molding method of the roller gear indexing cam based on VB and UG is provided. A system is compiled.The Simulation and Kinematics Analysis of the roller gear indexing cam mechanism can be done after the parameters are completely set. It hopes that the flaw and other problem in design can be found though this simulation and kinematics analysis, which is facilitate the designer to improve the design in time.
The Matrix Method for Solving the Finite Differential Form Euler Equation of Column Stability
Authors: Hu Zhang Yong , Liu Qi
Published: January 2015

Euler equation of column stability can be expressed by the finite differential form. According to the real requirements of column stability, coefficient matrices the differential equations are solved by the matrices calculation method. Then, the critical stress of column stability of constant section of the simply supported beams is obtained. The results are compared with the analytical results. The error analysis is also presented, which includes the error reasons and measures for diminishing the error. The proposed method has positive meaning for the variable section beams.
Analysis and Design of New Drive System Based on Electromagnetic Dynamic
Authors: Zheng Yu Sheng , Xie Teng , Zhao Jian
Published: January 2015

This paper designs a new type of electro-magnetically actuated system, it uses alternating electromagnetic force to drive two permanent magnet sliders reciprocating movement, though the role of crank connecting rod mechanism output torque, moreover, the feasibility of electromagnetic power drive system and realizes the effectively control of the drive system are analyzed in this paper. Firstly, we use the construction model established by the ADAMS software to process dynamics and kinematics simulation analysis. Then, the data is used to design control system. Finally, the results show that the system is feasible and practical.
Research on Automatic Detection System of Statistics in the Machining Error Analysis
Authors: Li Wan Jun , Niu Min
Published: January 2015

The research is to automatically testing and analyzing machining accuracy for the finished product by Pneumatic Measuring technology including the technology of data acquisition and the theory of disposition of data .To build a feasible system to analyze the machining error using Pneumatic measuring instrument to measure the parts by sensor to change the atmospheric pressure. A data acquisition card is used to gather and save the data. By programming software to write internet applications to statistical analysis for data, draw normal distribution figure, scatter diagram and histogram. To analyses the graph gains estimate the machining error and improve the performance for machine. By the experimental tests verify the feasibility and validity of the system.
Electric Effects on the Pre-Mixing Process in DBD Assisted Combustions
Authors: Xu Chun Hui , Li Liang
Published: January 2015

A method of pre-mixing process augmentation for fuel combustion using dielectric barrier discharges (DBD) is presented. The mixing process of fuel and air can be augmented by the edge electric field of the electrodes because its transverse component will exert an electric force on the charge particles generated by DBD. The experimental results show that the combustion can be drastically influenced by this augmentation of pre-mixing process. A hollow flame caused by non-sufficient mixing, in which the air flow velocity is much larger than that of fuel gas, is used to demonstrate this kind of augmentation effects. Once the discharge is ignited, the hollow region in flame will gradually disappear. And further, the flame can propagate backward into the quartz tube. In this paper, the dependences of this kind of augmentation on the applied voltage magnitude and on the distance d from the electrodes to mixing region are examined. The critical voltages for hollow elimination and onset of backward propagation of flame are measured. The augmentation effects will vanish once the value of d exceeds 2cm, the hollow flame can not be changed even the applied voltage is very high.
Study on the Efficiency of ISG Driving System for Hybrid Power Bus
Authors: Wang Yu Cheng , Zhao De An
Published: January 2015

Hybrid power bus is composed of the ISG driving system and diesel engine. The ISG driving system is integrated the generator and starter. In the rule of matching the ISG motor and diesel engine, the way to simulate ISG drive system efficiency was put out. Using this method, the working process of hybrid drive system which is made by permanent magnet synchronous motor and YC6105 diesel engine has been simulated. The ISG drive system efficiency in different input voltages was analyzed, the result shows that in the rated speed ISG drive system is in high efficiency, when the speed is higher than rated speed the efficiency of drive system is decline. However, the efficiency is still in the higher range. The maximum power and torque of the ISG increase when input voltage is rising in the same speed. The ISG driving system efficiency is the same trend in different input voltage. According to bus city running condition, the torque and maximum speed of ISG drive motor can be satisfy to the requirements of city bus.
The Control System Design for a Feeding Machine in Farms
Authors: Wang Jian Jun , Gao Hui Fang , Cai Li Yang
Published: January 2015

The control system design for a Feeding Machine in Farms is introduced in this paper, it consists of PLC, MCGS touch screen, monitoring computer, wireless communication module, etc. This paper introduces in detail the system's hardware and software design. The system has characteristics of easy operation, stable running and high reliability.
3d Geometric Model of Transparent Tower Equipment Display in OpenGL
Authors: Yang Hai Ru , Chen Guo Zhi , Wang Hui Zhen , Li Liang
Published: January 2015

It’s difficult to describe the 3d geometry and to establish the 3d model of tower equipment in OpenGL. High-level command functions to define complex three-dimensional modeling is not provided in OpenGL. This paper introduces 3d model of the tower equipment how to display dynamically in OpenGL. Interface of OpenGL import 3d model is description in detailed. Storaging format and reading file of STL (Stereo Lithography) are elaborated. How to build the 3d model is descripted. When tower equipment displayed dynamically, what is the key step to establish the model of tower equipment. The dynamic model of the whole tower equipment is displayed, in order to see clearly the structure of tower equipment.
Development of EDM Equipment for Machining Film Cooling Holes
Authors: Wang Zhi Qiang , Li Chao Jiang , Tong Hao , Li Yong
Published: January 2015

To meet the requirement of precision, machining efficiency and surface quality of film cooling holes, an electrical discharge machining (EDM) equipment was developed with the function of high-accuracy rotation of tool electrode and performances of both high machining efficiency and thin recast layer. The equipment mainly consists of inchworm spindle, pulse power generator with high peak current and control system based on PMAC. Key problems were solved including precision and consistency of holes diameter, compatibility between high peak current and small pulse width and openness of the control system. Performance tests of the equipment show that runout error of the electrode is less than 25 μm, maximum peak current is 50 A while the minimum pulse width being 1μs, positioning accuracy of the control system is less than 2 μm. Machining experiments of vertical and inclined holes verified the feasibility of the designed equipment.
Research on the Properties and Processing of 6Z63 Aluminium Alloy Tubular Busbar
Authors: Yu Guo Ming , Fan Hong Mei
Published: January 2015

The heat resistance, ampacity and processing properties of Al-Mg-Si alloy increase significantly by Adding trace amount of Zr, Re, Cu and other elements into the metal. The mechanical properties of aluminium alloy can also be greatly improved by thermomechanical processing. The high-strenght and heat-resistant 6Z63 aluminium alloy was prepared according to the theories above. The experimental analyses is based on its chemical components, processing technologies, product properties and mechanism.
The Application of Materials in Green Packaging
Authors: Jiang Qi Yue , Xu Jia , Bai Wan Dong
Published: January 2015

The definition of green packaging shall not be narrowed, the materials of package too shall be valued, as well as the disposal of package in and after use. Green packaging needs to develop itself due to the advancement of technologies, the development of new materials that is environmental friendly also requires cultural deposits thus promoting the cultural connotation of package. There are various standards in various cultures on packaging, distinct perspectives on visual interests of green packaging shall also be respected, paper materials is a good example for this view. Green materials should be looked at dialectically and the environmental benefits shall be measured in balance, which are two important perspectives to understand and develop green packaging.
Uncertain Linguistic Multi-Attribute Group Decision Making Method with Multi-Granularity Based on Projection and Dominance Degree
Authors: Han Er Dong , Guo Peng
Published: January 2015

In order to solve multiple attribute group decision making problems with multi-granularity uncertain linguistic assessment information, where the information of attribute weights are incomplete, a group decision making method based on projection and dominance degree is proposed. Firstly, the uncertain linguistic evaluation matrices with multi-granularity are transformed to two-tuple decision matrices according to the continuous interval two-tuple ordered weighted harmonic (ITC-OWH) operator. By using projection method, a goal programming model is set up to determine the attribute weights vector of individual decision maker. Then, integrative attribute dominance degree between pairwise comparisons of arbitrary alternatives are computed, a group integrative dominance degree matrix is obtained based on integrative dominance degree matrices and expert weight vector. The priority-time matrix is given to calculate the general priority time of alternatives, consequently, the rank result of alternatives can be determined.
Thoughts on Improving Evaluation of Enterprise Employees’ Performances
Authors: Zhou Jing Kun
Published: January 2015

As an important part of enterprise management, evaluation of employees’ performances is focused by more and more enterprise administrators. This paper briefly analyzes the reasons for failure evaluation of employees’ performances and provides some measures for improvement, including cultivating employees’ consciousness of treating performance evaluation in a correct way, paying attention to rationality of performance evaluation indicators, enhancing communications on performances, selecting performance evaluation subjects in a scientific way, strengthening trainings on performance evaluation for evaluators, comprehensively utilizing results of performance evaluation, doing work analysis well, classifying duties of posts, using proper methods of evaluation, establishing complaint mechanism for the evaluations, etc.
Numerical Simulation of Forward Green Supply Chain
Authors: Jiang Shi Ying
Published: January 2015

The forward green supply chain consisting of the manufacturer and retailer is as the background. The Game Theory is used,and two kinds of green supply chain game models are set up: the Centralized decision-making model, and the Manufacturer-leading Stackelberg game model.Then we carry out numerical simulation.We find that (1)With the increase of green level of green products, the market price of green product is increasing, the profit the manufacturer and the retailer are also increasing;(2)The manufacturer and the retailer will benefit from that consumers have strong environment consciousness.So we suggest the manufacturer and the retailer should cooperate to produce higher green level of products.
Landslide Formation Mechanism and its Control Measures in Dabaolang
Authors: Lv Peng , Li Bao Yu , Zhang Yu , Zhang Yun Xun
Published: January 2015

Through analyzing Dabaoliang geological characteristics, this paper discussed the factors of the mechanism of landslide in Dabaoliang area and simulated its evolutionary process. The paper could get some conclusions, and the factors of landslide are as follow: the stability of the slope which mainly composed by clastic rock not only depended on the performance of the mudstone layer but also the skid resistance of the sliding surface and the shape of slope. Under the influence of regional structure, the joint fissures which developed along the boundary of the landslide will connect the crack and benefit the permeation of the surface water. The heavy rain is one of the main factors caused the slope unstable and sliding. Provide effective prevention and control for prevention and control of projects.
Research on Green Manufacturing Technology for Electromechanical Products
Authors: Lou Xi Yin
Published: January 2015

At present, the human society is undertaking the sustainable development strategy of globalization. In the process of development of electromechanical products, manufacturing mode is undergoing profound changes with the progress of human society Green manufacturing is essentially an embodiment sustainable development strategy of human society in modern manufacturing industry. Green manufacturing mode is widely accepted by governments and various circles of society, it is showing the trend of internationalization and legislation. Electromechanical products green manufacturing is a modern manufacturing mode which is comprehensive consideration of environmental impact and resource efficiency. It is the goal of product design, manufacturing, packaging, transportation, use and disposal of the product life cycle, minimum impact on the environment, resource use efficiency highest, and makes the enterprise economic benefit and social benefit coordination optimization. Electromechanical products green manufacturing as the mode of sustainable development has become an inevitable choice for enterprise product upgrades.
Research on Superplastic Gas Bulging Forming of 5A06 Aluminium Alloy Sheet
Authors: Bi Bao Peng , Wang Yong , Mulyukov Radik R. , Markushev M.V.
Published: January 2015

Based on Backofen constitutive equation of 5A06 aluminum alloy at high temperature tensile test, get 5A06 aluminum alloy best superplastic constitutive equation parameters: when T= 400°C,m=0.39, K=270.34.5A06-O aluminum alloy cup gas bulging forming process is simulated with using the method of MARC finite element analysis .By designing a variety of shapes of bilge preform die, to align the bulging parts first post mode when carries on the different effects of the thinning deformation, and analyzes its influence on cup final thickness distribution of the rule.The superplastic test and positive and negative bulging simulation study results of 5A06-O aluminium alloy plate for commercial supply condition (the original thickness of 2 mm) show that the optimized blow the thinning deformation is greatly improve the cylindrical pieces of the final wall thickness distribution, the most in thin wall thickness from the simple was blowing bulging of increased by 0.94 mm, 0.65 mm Wall thickness distribution index is 0.079.
FEA of Double Metal Composite Seamless Steel Tube with Cross-Rolling
Authors: Gu Xuan , Ma Xu , Jin Duo Ye
Published: January 2015

The numerical simulation of the cross-rolling stainless steel/carbon steel double metal composite seamless steel tube process was conducted through the finite element analysis of the three-dimensional thermo-mechanical coupled elastic-plastic by applying the MSC.MARC software. Based on the numerical simulation, The character of stress, strain and temperature distribution parameters during the two roll cross-rolling were obtained by the finite element analysis, and acquired the section pass deformation figure. The distribution of the axial stress, circle stress and radial stress were drawn in the cross-rolling roll gap profile along the circle. The mechanism of tube cross-rolling process was explained according to the stress distribution. The results of the research can be applied to the design of the cross-rolling forming process.
Development of Dynamic Load Strength Test Machine Based on Automotive BIW
Authors: Wang Zhi Ming , Jiang Wen Bo
Published: January 2015

The dynamic load strength test of automotive BIW is an important parameter for vehicle passive safety, but different test standards, different test requirements, which caused much trouble to the test authority. To solve the shortcomings of the traditional machines, such as low automation, poor universality and weak ability of data processing, this paper designs a new test machine for the dynamic load strength trials of automotive BIW on the basis of three typical standards. The test results indicated that this test machine embodies the characteristic of easy operation, stable function, and wide suitability, which improves the measurement accuracy and efficiency, at the same time, solves the problem of the database construction.
Important Matters of Non-Isothermal Crystallization Method
Authors: Zhang Xiao Can , Zhou Lu , Liu Qiang , Zhou Qiong , Singfield Kathy L.
Published: January 2015

Non-isothermal crystallization method was performed for pure PLLA and a blend of 50/50 wt% PEO/PLLA samples. The spherulite radial growth rate was calculated and compared to what was acquired using the isothermal crystallization method. It is found that both the fitting order and the decimal number of the fitting polynomial functions heavily affect the resultant spherulite growth rate at different temperatures. It is also important to note that some subtle yet important features might be missed using the quick alternative, such as in the pure PLLA system.
Wing Flutter Analysis Parameters during Flight
Authors: Long Wei , Liu Yan , Cao Jia Ming
Published: January 2015

This paper adapts finite element analysis of dynamic structure to analysis airfoil based on the phenomenon that torsion coupling may happen to airfoil during flying,, which verifies flutter mechanism of swing under subsonic and transonic condition. Modal frequency error can be changed into stiffness error by error analysis. The errors of bending and torsion frequency are verified by adjusting stiffness and mass distribution. Meanwhile the concept of modal strain energy is introduced to character and identify different positions and structures of damages.
The Change of Velocity and Pressure of Micro Bubble in Multi-Phases Flow in Mesoscopic Scale
Authors: Ling Zai Shuai , Long Wei , Wu Zhang Yong
Published: January 2015

The dissolution mechanism of air and formation mechanism of bubble in the scopic-scale,and the change rule of the velocity and pressure of bubble in the rising process,made the theoretical analysis and explanation. Be based on VOF model,with the help of Fluent software,For the single bubble rising in the water by numerical simulation;The results show that liquid phase flow state is a key factor affecting the speed of the bubbles rise;Pressure difference is the main reason cause the jets and bubbles deformation.Through the above process in the rising process of the bubble velocity and pressure changes, and a detailed analysis of inquiry, the pressure and velocity of the bubble rising process show up more realistic.
Effect of Two Kinds of Osmotic Media on Quality of Tilapia Fillets
Authors: Duan Zhen Hua , Wang Yu Die , Wang Ju Lan , Feng Ai Guo , Zheng Yuan Ping
Published: January 2015

In order to search effect of osmotic medium on quality of tilapia fillets treated by different kinds of osmotic solution, the changes in pH value, lightness (L*) degree and electrical conductivity (EC) were quantitatively determined during osmotic treatments for fresh tilapia fillets with the osmotic medium (sodium chloride, sucrose),medium concentration (10-30%) and osmotic time (1-5hour) as the independent treatment factors. Results were as follows: (1) L* and pH of the fish fillets were decreased gradually, color darkened slightly, and EC was increased with increase in osmotic time when fresh tilapia fillets were soaked in sodium chloride (NaCl) solution and sucrose solution, respectively. (2)Effects of two kinds of osmotic media on quality of fish fillets were different during osmotic treatment period. First, the changes in pH, L* and EC of fish fillets were bigger in the NaCl solution, and smaller changes in the sucrose solution. Second, pH of fish fillets in the NaCl solution was always lower than that of sucrose solution, but EC of fish fillets in the NaCl solution was significantly higher than that of sucrose solution.(3)Highly significant correlation of EC and osmotic time were observed, and the regression equations were established according to the results of influence on EC of fish fillets in the process of osmotic dehydration.
A Model for Predicting the Failure Behavior of Bimodal Nanocrystalline Materials
Authors: Tian Song Feng , Yu Hong Jian , Liu Ying Guang , Ju Rong Yuan , Mi Xiao Dong , Peng Xiu Lei
Published: January 2015

Giving a bimodal grain size distribution in nanocrystalline materials can effectively achieve both high strength and high ductility. Here we propose a theoretical model to study the failure behavior of nc materials with bimodal grain size distribution. The dependence of failure properties on grain size distribution were calculated. Numerical results show the strength and ductility of bimodal nanocrystalline materials are sensitive to grain size and the volume fraction of coarse grains.
Microwave Synthesis and Photocatalytic Activity of CeVO4 Nanocrystalline
Authors: Wang Cong Sen , Chen Xiao Dong , Liao Xue Hong
Published: January 2015

Cerium vanadate nanocrystalline was prepared by cerium nitrate, vanadium (V) oxide as raw materials and sodium dodecyl sulfate as surfactant under microwave irradiation. The sample was characterized by X-ray diffraction (XRD) and scanning electron micrograph (SEM). The XRD show that the as-prepared sample calcined at 773 K is tetragonal zircon, and the SEM graph show that the as-prepared CeVO4nanocrystalline is layer structure formated of small particles aggregation. We studied the photocatalytic activity of the as-prepared samples by using degradation of methyl orange in visible light. It shows that the photocatalytic activity of Cerium vanadate nanocrystalline was very well. The effects of different factors such as calcination temperature and the concentration of methyl orange on the characterization of CeVO4are discussed. It found that when the catalyst calcined at 873 K was 0.10 g, and 0.3 mL hydrogen peroxide joined as well as, pH was 2.0, the degradation ratio of CeVO4for methylene orange of 100 mL 20 mg/L reached 87% in 80 min.