bluuebunny/crossref_metadata_2025 huggingface dataset:
Automotive Synchronous Belt Transmission Stationarity Simulation Analysis Based on the Rigid-Flexible Coupling
Authors: Shi Yao Chen , Li Zhan Guo , Liu Qi Long
Published: August 2014

In this paper, Using rigid-flexible coupling method the auto synchronous belt drive system dynamics model is established. We can make the rigid-flexible coupling analysis of auto synchronous belt drive system through Recurdyn, designed and auto synchronous belt vibration displacement measurement device was developed, measuring the midpoint of the belt in the process of synchronous belt transmission vibration curve of change over time. Has an important value to improve auto synchronous belt transmission stability and reduce the transmission noise.
Design and Implementation of Public Service Announcement Based on Computer Animation
Authors: Liu Li Yan
Published: August 2014

We illustrate the design and implementation of the whole process of public service announcement in the paper by using the tools such as Animo 6.0, including: literary writing of the script, design of roles and background, the design of continuity, animation drawing, the processing and coloring of outline sketch, the synthesis of animation, the synthesis of sound and picture, and special effects, etc.
Research on the Paper Splicing Recovery
Authors: Jiang Yu Xuan
Published: August 2014

This paper focuses on scraps of paper splicing recovery issues. To deal with complex scraps restoration problem, first the image should be changed as pixel grey level binary image, generating binary matrix, and then classify the scraps using SOM neural network data and feature comparison method. Combining with the Euclidean distance discriminant method, we match the scraps of paper with same edges and obtain a complete stitching schematic finally.
A Horizontal Projection-Based Research on Cross Matching Method in Flight Trajectory of Airplane Model
Authors: Zhu Li Feng , Wang Kai , Wang Lei , Wei Wei , Guo Bo , Lu Zheng Yu
Published: August 2014

With the actual flight of the airplane model pictured by two theodolites, in this paper, a cross matching method of flight trajectory was proposed on the basis of horizontal projection, which was also checked and simulated in the research. The simulation proved that: within a certain measuring range, this cross matching method can effectively enable the matching calculations to flight trajectories of large numbers of equidirectional airplane models, thus to meet the measuring needs of the airplane model in flight.
The Development and Research of Data Mining Technology
Authors: Sun Xiang Kun
Published: August 2014

With the development of computer science and database system, millions of data will be generated every day. How to mining useful information and knowledge from large database is becoming a more and more popular research topic. In this paper, we introduced the origin of data mining, discussed some different data mining techniques in different fields, and made a conclusion of the application of data mining.
The Modeling Method for Record Wave File Analysis
Authors: Qi Ling Zhen , Cao Qing Hua
Published: August 2014

There is a lot of analysis algorithm in Recorder wave file system. In addition, the various types of analysis algorithm, the different of parameter and output. According to the above mentioned characteristics, we propose an information processing method of Separated Request-Algorithm-Data. We can unified manage it via the model and schedule the correct algorithm through user’s request. Then we can get result from data. In the experiment, we evaluate the model we proposed is supportive when schedule the recorded wave file analysis algorithm. The method improves the versatility and scalability in the respect of wave analysis algorithm.
A Study of the Assessment on Air Quality on Fuzzy Comprehensive Index
Authors: Sun Yong Jian
Published: August 2014

This paper discusses the assessment problem on air quality. It will firstly make analysis on part irrationality of existing AQI and then introduces into concept of fuzzy mathematics on this basis. It makes index assessment on regional air quality according to 6 index values of selected air quality. Firstly, it will use fuzzy mathematics as basis to establish model of fuzzy comprehensive index and adopt weighting method of excess multiple considering each index to determine the weight, secondly it uses membership function of half-step trapezoidal method to determine its membership grade and makes compound operation to obtain fuzzy comprehensive assessment matrix, finally it makes fuzzy vector uniformization to get the new air quality index as well as uses national standard as reference limits to divide it into 6 grades and comprehensively makes index assessment on air quality.
Industrial Cluster Competitiveness Connotation and Evaluation - A Case Study of Yulin City Magnesium Industry Clusters
Authors: Zhou Luo Fu , Ming Chen Yong
Published: August 2014

In the current, competitiveness of industrial clusters is an important topic on the academic theory study, this paper from "factor", "structure" and "ability" carried connotations three perspectives analyzes the competitiveness of industrial clusters, evaluated using principal component analysis Yulin City magnesium industry cluster competitiveness. The empirical results show that: the past five years, Yulin magnesium increase the competitiveness of industrial clusters is obvious, but there are many weak links in the development. Empirical research to verify the feasibility and rationality of the evaluation index system of principal component analysis method.
Design and Implementation of the Algorithm on Automatically Generating Vouchers in Financial Software
Authors: Bai Dong , Han Jia Wu
Published: August 2014

Automatic generation algorithm vouchers, the use of the algorithm can depart from any data source, in any condition defined abstract formulas, subjects formula, the amount of formula and other formulas, then by definition generates vouchers, thereby reducing the workload of finance staff to improve accounting accounting standards.
Backward P-Law Reasoning and its Application in the Information Image Camouflage-Reduction
Authors: Fan Cheng Xian , Li Ke Jun , Zhong Hui
Published: August 2014

Based on P-law reasoning, backward P-law reasoning and its structure are presented, Next, the relation and relation theorems between backward P-law reasoning and general reasoning are given. Using the theory results, the application of backward P-law reasoning in the information image camouflage-reduction is given.
Heat Transfer Boundary Conditions of Piston of Aviation Reciprocating Engine
Authors: Chen Shu Xian , Meng Xin , Guo Xiang Chuan , Zhang Yong
Published: August 2014

To assess piston’s thermal loads, the direct and effective method is to calculate piston’s temperature distribution. A key point in calculating the temperature field of a piston is the determination of heat transfer boundary conditions of each side, especially the gas side. The thermal boundaries of a piston consist of the piston top side (combustion side), the crevice surfaces, the piston ring land and skirt outside surface, piston underside and pin hole side.The calculating methods for the heat transfer boundary conditions of engine piston are studied according to the theoretical analysis of heat transfer of engine piston, which can be taken as a reference for providing precise boundary conditions for the research on piston’s temperature field.
A Modified Harmony Search Algorithm Solve Numerical Optimization Problems
Authors: Xia Hong Gang , Wang Qing Zhou
Published: August 2014

This paper proposes a new effective MHS algorithm to solve numerical optimization problems. The MHS algorithm first adopt a novel self-studying strategy, which makes it easy balance the global search ability and local development ability, prevent the MHS algorithm trapped into local optimal value. besides, the harmony memory consideration rate (HMCR), pitch adjustment rate (PAR) and bandwidth distance (bw) is changed with function values dynamically, it can effectively improve the convergence speed and precision of the algorithm Based on five test functions , experiments results obtained by the MHS algorithm are better than those obtained using HS, IHS and NGHS algorithm in the literature.
Design of X-Ray Fluorescence Spectrum Software Based on Linux
Authors: Zhuo Wei
Published: August 2014

According to the research on analysis software of X fluorescent spectrum under the Linux system, a new algorithm of X fluorescence analyzer has been brought up: use the method of energy dispersive X fluorescence analysis, based on the software that can analyze the material composition under the control of ARM - Linux touch screen. This paper fixes on developing software of X fluorescence analyzer; realize the collection and analysis of multi-channel spectrum data, data storage, sample analysis, qualitative and quantitative analysis of the on-site samples, and the research and implementation of corresponding algorithm.
Experimental Study on Force of PDC Cutter Breaking Rock
Authors: Wang Jia Jun , Zou De Yong
Published: August 2014

Because the anisotropy of shale formation should result in that wellbore deviations is unpredictable, the bit-rock interaction should be fully lucubrated in order to eliminate this problem. The impact of shale rock anisotropy and the cutting velocity on the load of PDC cutter wasn’t considered by the existing cutter-rock interaction models. On the basis of experiments of cutting shale with PDC cutter, using the stress tensor analysis theory, the relationship between the shale rock anisotropy and the cutter’s force is proposed in this paper. A new cutter-rock interaction model was established, and then a new bit-rock interaction model was set up. That applying these models to the ROP prediction of directional PDC bit can improve forecast accuracy is found.
Research on the Optimization Scheme of Base Station Construction Based on Artificial Bee Colony Algorithm
Authors: Wang Wei Ping , Yang Miao , Li Tao , Qin Ying
Published: August 2014

Artificial bee colony algorithm is a new meta heuristic bionic algorithm.Each bee can be viewed as an agent in the algorithm.Through the swarm synergies between the individual achieve the effect of swarm intelligence.Based on the analysis on the principle of bees gather honey,the process of solving functional optimization is converted into the process of swarm finding rich food sources,then we can solve the function.With the arrival of 4G Era,Base station construction is the most crucial step of the mobile communication network popularization, its significance and role should not be underestimated.How to realize the optimization of communication base station construction costs has been the research focus of the mobile service operator and colleges and universities.The artificial bee colony algorithm is applied to solve the optimal solution of base station construction scheme in this paper,which is very critical reference for decision in real base station construction.
Study of Cognitive Radio Spectrum Sensing Algorithm Based on Compressed Sensing
Authors: Cui Chua Nan
Published: August 2014

As the latest progress in modern signal processing, Compressed Sensing (CS) has great potential for application in the field of cognitive radio and other fields. In this paper, the basic principle of compressed sensing technology and its application in cognitive radio spectrum perception key technologies are studied, achieving innovative research results.
Spectrum sensing technology in cognitive radio
Deployment Strategy in Distributed Underwater Sensor Networks
Authors: Liu Li Yan , Fu Rong , He Yi , Zhang Ying Qian
Published: August 2014

Distributed underwater sensor network coverage is divided into two main categories: deterministic coverage and stochastic coverage. A strategy is put forward to deploy determinate area by using a triangular-grid method. When a coverage ratio is known, the distance between nodes can be adjusted to meet the coverage ratio in the monitored area, and the least number of sensor nodes can be calculated. Also a heuristic method is proposed for stochastic area deployment strategy. It is under the premise that the initial node location randomly deployed is given, using Voronoi diagram, the not easiest monitored path is searched, and the network coverage performance is improved by configuring the new nodes in the path. Finally it is proved that network performance is more improved by the simulation experiments, when one to four nodes are configured in the easiest breach path.
Research on the BOVW Model of Infrared Video Based on the Motion History
Authors: Tang Lin , Liu Lin , Wei Yu
Published: August 2014

Aiming at the feature representation problem of infrared video, this paper presents an approach for bag of visual words model by considering the spatial and the temporal relations among the visual features. In this approach, motion mask image was generated based on motion history image, optical flow vector is mapping to visual code book. By using motion history value and motion energy value calculating the weighting coefficient, the BOVW was constructed based on angle voting. Experiments have demonstrated improved performances on motion feature representation in the infrared video.
Research of Multi-Source Data Fusion in Power Grid Planning
Authors: Feng Jian Lei , Huang Ping , Qiu Wei Dong , Huang Jian , Yin Qiang , Luo Feng Zhang
Published: August 2014

To meet the growing requirement of multi-source data handling, this paper carries out the application and research of data fusion technique in network planning. The fundamental theory hierarchy of data fusion working for power system planning is established, basing on it this paper analyses the fusion model in power system planning, and then designs an application case to explain the concrete fusion process. It is proved that the application of multi-source data fusion helps to make a fuller and more effective use of the massive information resource of data systems, so that the planning decision is more reasonable.
Broadcast Ephemeris Accuracy Analysis for GPS Based on Precise Ephemeris
Authors: Jia Rui Xi , Li Xiao Yu , Xia Chang Feng , Jin Dong Yang
Published: August 2014

The accuracy of broadcast ephemeris is an important index of a satellite navigation system. The theory and method of precise ephemeris assessing broadcast ephemeris are introduced. The accuracy of GPS satellite broadcast ephemeris is assessed with the precise ones provided by IGS. The orbital coordinates of GPS broadcast ephemeris from 18th to 24th October 2013 are calculated. The analysis shows that during this time the GPS satellite broadcast ephemeris is reliable, accurate and safe as the whole, meanwhile the broadcast ephemeris accuracy is about 1 meter, better than nominal accuracy of 5 meters.
Improving Precision Based on Radar Rectification Principle of Neural Network
Authors: Huang Ling Fang
Published: August 2014

This dissertation introduces the radar rectification principle of Neural network, and derivation of the radar errors registration algorithm based on regression neural network algorithm , the result of simulation shows that the algorithm can obtain higher effect by eliminating a variety of errors and improving precision of target.
Application of Random Data in RFID Secure Communication
Authors: Wang Bin
Published: August 2014

With the development of the supply chain industry, the application environment has become increasingly complex, and the security demands in RFID communication are also increasing. This paper analyzes the problems and security requirements of node authentication, message accuracy and privacy protection, etc., proposes an RFID secure communication algorithm based on random numbers describing the algorithm for nodes query generation and node processing forwards. Experimental results show that the proposed algorithm has higher accuracy.
VC Programming of Matrix Equation of Architecture Design Based on FPGA System
Authors: Zhang Ju Jing
Published: August 2014

According to the FPGA system model, we design the coupling scheme of basic knowledge and professional skills cultivation of higher vocational colleges architectural major, and use the matrix algorithm to improve the scheme, which realizes the overall coordination development of architecture students. Combining with the matrix variance, we establish talents cultivation coupling model of higher vocational colleges architectural major, and give the expression of coupling coefficient function. Finally, we use VC programming to set up the computer coupled solver, and solve the success cultivation rate of modern architectural talent, and get the coupling effect of talent cultivation. It provides a new computer method for talents cultivation in higher vocational colleges.
Research for Parameter Estimation of Linear Frequency Modulation Signals
Authors: Liu Hai Sheng , Chen Cang
Published: August 2014

In order to conduct estimation of parameters in signal processing, using maximum likelihood estimate and the minimum mean square error estimate and maximum a posteriori probability in Bayes estimate . The experimental results show that: the maximum likelihood estimate accuracy, but search volume greatly; and Bias estimation to a certain extent, can improve the operation speed, but lower precision. So in the actual operation, select appropriate estimate methods based on the specific conditions.
Research on Friction Hot Forming Technology of Hydraulic Cylinder
Authors: Gao Ying Min , Li Jing , Yao Jian Hui
Published: August 2014

Hydraulic parts with three sealing devices always leak in use, absorber and air spring for example. Hydraulic cylinder can be sealed by itself if friction hot forming technology is adopted on hydraulic cylinder at both ends. By going through the technology, two sealing devices of hydraulic parts are saved, the leak of hydraulic parts is avoided, the rigidity of hydraulic parts is enhanced, the structure of hydraulic parts is optimized and the service life of hydraulic parts is increased.
RETRACTED: Decoupling Information Retrieval Systems from Internet QoS in SMPs
Authors: Chen Hao , Chen Qin Qun , YE Shao Xia
Published: August 2014

Retracted paper: In recent years, much research has been devoted to the analysis of 128 bit architectures; on the other hand, few have evaluated the construction of wide-area networks. In fact, few cyberneticists would disagree with the understanding of IPv6. This is an important point to understand. we describe an autonomous tool for developing compilers, which we call ADZ.
A New Frequency Estimator in Multi-Frequency Estimation
Authors: Zhu Dong Xu , Zhi Jiu Ying , Fu Gang
Published: August 2014

By analyzing the second-order and fourth-order IIR filter that affect the variance adaptive prove second-order IIR model has a single peak characteristics, to achieve stable convergence; while the higher-order IIR model polymorphic, so the need for the estimated parameters are initialized conclusions. Proposed use of FFT frequency estimation assisted IIR adaptive filter to achieve more frequent rate estimation, parameter estimation for the multi-point frequencies adaptive selection process provides a theoretical basis.
Statistical Mechanics Model of Fully Ionized Hydrogen Plasma under High Temperatures and High Pressures
Authors: Zheng Xing Rong , Guo Li Shuai , Zhang Yao Wen , Lei Ji Hai , Wang Yan Zhang
Published: August 2014

Hydrogen occurs ionization under high temperatures and high pressures. Considered the interaction between the electrons and ions of fully ionized hydrogen plasma, and the translational motion of hydrogen ion obey Boltzmann distribution, Coulomb interactions between charged particles can be used Hartree-Fock integrals and described by approximants, and obtained the statistical mechanics model and equation of state of full ionized hydrogen plasma.
Research of Human Resources Configuration by the Model of Assignment Problem
Authors: Dong Shi Long
Published: August 2014

With the development of the enterprises, as important factors, human resources plays an vital role in company. Comparative human resources are hungrily needed in the combination of various resources in enterprise management. However, at present, most of enterprises are unable to make full use of the human resources and cannot stimulate the huge potential, which can’t configurate human resources effectively and cause great waste of human cost. From the angle of saving labor costs and improving the efficiency, according to the basic principle and method of human resource configuration, this paper, based on a specific project as the background, suitable for human resource configuration of particular project, use the model of assignment problem in operational research, accomplish the optimal combination of number and projects and solve the problem of the waste of human resource.
Optimized Instrumentation of Runtime Verification
Authors: Gu Wen Di , Luo Yi Gui
Published: August 2014

Runtime verification
checks
whether
one system
execution
conforms to a group of specific requirements. One of the many problems
concerned
is how to lower the costly instrumentation
overhead, because the
performance is as important as
correctness
. The solutions to cope with the problem include static checking,
and
hardware based
instrumentation
. What makes
a difference to our approach is
that
it
takes into account the modular structure of the observed run, and our
approach
makes a tradeoff between
observability
and cost by means of simulated annealing algorithm.
T
he paper gives a
definition
of instrumentation
observab
ility
in detail
.
The
simulated annealing a
pproach
works out
a
n
optimized
instructive instrum
entation solution
contain
ing
part of all the observing points
.
An experiment is conducted on the
LwIP
protocol stack to prove the e
ffect
of our observing strategy.
Designing Access Control Policy Using Formal Concept Analysis
Authors: Chen Bo , Qiu Jia Di , Chen Ming Ming
Published: August 2014

The need to securely share information among collaborating entities is increasingly becoming important. It often needed to implement access control (AC) models. The objective of this paper is to design access control policy using formal concept analysis, which is based on mathematical lattice and order theory. We provide discussion on how FCA can be used to capture RBAC constraints. We show with FCA, we can express more intend constrains than it can be done in traditional RBAC approach. The experimental results show that the approach is more resilient to dynamic computer environment.
Research on 3D Display and Related New Display of Fusion Development Technology
Authors: Mao Xiao Meng , Liu Jin Gao , Chao Ai Tang , Wang Bin
Published: August 2014

In recent years, the 3D display technology is not only a kind of show of technology, but also is integrated use implementation of relevant various technologies. 3D display technology itself has a lot of kinds of implementation way, which including 3D volumetric scanning, holographic imaging and integrated imaging; these 3D display technologies have their own characteristics. Combining with 3D display the related key technologies and development trend, this article analyzed the integration development prospects and the content of specific development of 3D display and the related technology.
Mining Maximal Frequent Patterns over Data Stream Based on Time Decaying
Authors: Zhou Fen Fen , Yang Jun Rui
Published: August 2014

A new algorithm DSMFP-Miner was proposed. When the data stream reach continuously, a maximal frequent pattern tree called MFP-Tree is adopted to maintain the transactions in data screams dynamically. Transactions in the same Transaction-sensitive sliding window are set to own the same “importance”. Besides, the support of the transactions in old window is decayed to reduce their influence to mining results, and infrequent patterns and overdue patterns are deleted periodically. In the mining process, the algorithm put an enumeration tree with each node of MFP-Tree as root as the search space, and use the "depth-first" search strategy to mining the maximal frequent patterns with this node as a suffix.
HP3 Interface Program by Labview
Authors: Xu Jing Bo , Zhao Yong Zhong , Yu Hong Tao
Published: August 2014

This paper aims to discuss about the method of HP3 interface program with hardware by Virtual instrument-labview. This paper studies the characteristic and advantages of labview, analyzes the HP3(Handyprobe difference USB oscilloscope) hardware interface way and discuss the connection on hardware labview. The actual interface connection method is given in the end.
Incremental-Learning Spam Messages Distinguishing and Sorting System Based on Arm Platform
Authors: She Xue Bing
Published: August 2014

Now that the endless spam messages have sevely affected people on their works and daliy lives. The omission and even the help of the serrvice providrs (SP) in this regard make it extremely necessary to distinguish and sort the spam messages through filtering the messages on user’s mobile phone. The paper expatiated on a “self-study spam messages distinguishing and soring system’ developed onARM9 platform. By adding a spam box to SMS software of cellphome besidrs all os its normal functions, the system incessantly adjusts the weight of the featues though incremental learning method so as to achieve the highly accurate discrimination on whether a message received is the spam one or not, and futher decides to sort the message to the message box or the spam box, Test result on ARM9 platform shows, our technology can be applied completely to the mobile phones with just general performance.
Research on Java Source Code Static Analysis Based on Taint Tracking
Authors: Han Li Fang , Hou Ting Ting , Gao Kun Lun , Liu Nan , Cui Bao Jiang
Published: August 2014

Java applications have proliferated rapidly in recent years, and the security issue in the source code seems to bring a great threat which cannot be ignored. SQL injection and cross-site scripting vulnerabilities, path traversal, and so on are common Java security vulnerabilities. These vulnerabilities are usually caused by improper handling of user input and we call them input validation vulnerabilities [1].In this paper, we propose a Java source code analysis method based on the taint tracking. By means of vulnerability pattern match, we keep track of the introduction of tainted data and its propagation in different contexts, leading to comprehensive and accurate test results. Actually, we have applied this method to some of the open-source Java projects. Compared to other similar software, our technique presents good feasibility and superiority.
Fatigue Strength Assessment Analysis of Large Container Ship
Authors: Han Feng Lei , Wang Chun Hui , Hu An Kang , Liu Ya Chong
Published: August 2014

Fatigue assessments of container ship structures can be processed using various direct calculation approaches or various approaches of classification societies [1,2]. In this investigation, the fatigue strength assessment to the key positions of a 9200TEU container ship has been performed ,subjected to the rules of BV about fatigue strength specification of large container ships, based on design wave method and Miner fatigue cumulative damage theory analysis method. Wave loads have been computed using linear wave load calculation method based on three-dimensional potential flow theory. And the fatigue strength assessment of the typical hot spot structures has also been conducted based on a series of critical single design wave.
The Bi-Dimensional Bedrosian’s Principle for Image Decomposition
Authors: Xu Guan Lei , Wang Xiao Tong , Xu Xiao Gang , Hu Jiang , Li Bin Yu
Published: August 2014

Based on the derived bi-dimensional Bedrosian’s principles and the original multicomponents, we provide the combined bi-dimensional Bedrosian’s principle so that the monocomponents in multicomponents can be separated in the case that the existent methods fail. The proposed method can solve the problems caused by the cross-angle and amplitude ratio and frequency ratio and so on between these components that BEMD fails to solve. Experiments support the proposed methods.
Space-Ground Synchronization TT&C Resource Distribution
Authors: Zhang Shou Yu , Yu Xiao Hong
Published: August 2014

TT&C Resource distribution of SGS mission is a complex combinatorial optimization question. We set up data structure and a SGS model, the model can describe relation between space mission and TT&C resource, it can be solved with genetic algorithms and single mission decomposition method.
The Use of NURBS Modeling in the Ceramic Design
Authors: Rao Shun , Liu Jing
Published: August 2014

NURBS is a great modeling method which is supported in all the advanced three-dimensional softwares. With NURBS, people can create the lively and vivid models on the computer. And it plays a role on the model designing of chinas.combining with the experience of practices, the dissertation will analyze with cases to curved surface model of the china’s style designs and mainly study NURBS curved surface modeling taking the method of ceramic design.
Studies of Large Hydraulic Excavator Boom Energy Recovery Technology
Authors: Meng Zhi Ming , He Yuan Cheng , Zheng Ting
Published: August 2014

In this paper, Sichuan Bonny provided excavator experimental as a platform ,to testing the efficiency of various energy-saving hydraulic circuit. Based on the original hydraulic system design and adding new energy recovery system, observing the energy saving effect. Summarizes the large excavator hydraulic system common energy problems, deal with the problems from different aspects of hydraulic energy-saving technology describes the present state of hydraulic energy-saving technologies , and described the development trend of hydraulic energy.So that allows people to comprehensive understanding of this technology, to promote this technology popularization and application.
Application of Layer Isolation Technique on Plotting AutoCAD Assembling Drawings
Authors: Tang Jian Cheng
Published: August 2014

AutoCAD has obvious advantage on plotting AutoCAD assembling drawings at present, but the plotting speed and difficulty of assembling drawings are always two problems to puzzle most architects and draftsmen. Making use of AutoCAD drawings object property, layers and layer isolation function, a sort of fast effective drawing method is innovated, and it can solve the above problems perfectly. Practice proves that this method can be applied effectively to the plotting of mechanical assembling drawings, and it can obviously enhance plotting efficiency and reduce plotting difficulty.
Research on the Micro-Injection of UV Curing
Authors: He Jian Yun , Yu Yuan , Wang Ruo Yun , Chang Le , Wang Qiang , He Li Cheng , Yang Wei Min
Published: August 2014

Based on the traditional injection molding technology, micro-injection molding of UV curing experiments has been conducted. The injection molding and repeatability of the parts which have micro-structure were mainly studied. The experimental results show that: the mold-ability and repeatability of micro-structure are significantly infected by UV radiation energy and forming temperature. In order to achieve a good repeatability, it is necessary to use a sufficiently high intensity ultraviolet radiation and appropriate molding temperature during micro-injection of UV curing.
Optimization of Rotor Mechanical Properties Parameters Based on Particle Swarm Algorithm
Authors: Jia Mei Hui , Wang Cheng Lin , Li Xiao Jie , Gao Tai
Published: August 2014

In order to improve the mechanics properties of the rotor components at ultra-high load steady acceleration conditions, the significant factors to the rotor mechanics properties, which include the ellipsoid axis length, minor axis length, rotor speed and gyration radius of holes, are taken as the optimizing objects, the extreme stress, strain extremes, moment of inertia of rotor are optimized as the targets. Then optimization models of the rotor mechanics parameters are established, and the multi-objective optimization method of rotor mechanics properties is proposed based on particle swarm. The results show that the mechanics properties of the rotor were significantly improved using the optimize method.
Research of the Punching Mechanism and Design of the Punching Device of the Peanut Mulching Film and Punching Planter
Authors: Lü Xiao Lian , Wang Wei , Lü Xiao Rong , Wu Wei Ming
Published: August 2014

According to the technology requirement and existing problems of the key working parts (punching device) of the peanut mulching film and punching planter, the punching device of the peanut mulching film and punching planter was designed adapt to first mulching film and then sowing. It was introduced the structure and working principle of the punching device, and the punching mechanism are studied. The trajectory of the punching parts was analyzed in the punching process, and the parameter equation of the punching profile was established. On the basis, the main structure parameters of the punching device were analyzed and optimized. The study provides reference and basis for the design and development of the peanut mulching film and punching planter.
Design and Analysis of Timing Screw Based on B-Spline Curve
Authors: Zhong Chang Qing , Zhang Yong Lin
Published: August 2014

In order to reduce the vibration of the high speed timing screw and optimize the manufacturing process of classic three-section high speed timing screw. Mathematical model of three-section high speed timing screw is rebuilt based on B-spline curve and a general mathematical model for the screw. Thus result a new one-section form instead of old three-section type. Then the displacement and speed is simulated in MATLAB. After that,modal analysis and harmonic response analysis have been done in ANSYS. Whose results show that new one-section high speed timing screw which can meet the request of three-section. New one-section high speed timing screw has no velocity mutation, which reduces the vibration of the high speed timing screw. According to the result of modal analysis and harmonic response analysis, the vibration is reduced about 20%.
Performances of Water Jet Propulsion with PD Pump
Authors: Yang You Sheng , Sun Peng , Fu Yang , Zhao Chao Chao
Published: August 2014

Water jet propulsion (WJP) with positive displacement pump (PD pump), in which the suction thrust of PD pump (Due to the effect of pump suction and the influence of the suction boundary layer) and the reaction thrust of water jet are used to push watercraft forward, has many advantages like high efficiency,low noise, high maneuverability, good adaptability to variable working conditions, simple transmission mechanism over traditional propulsion methods. A mathematical model is developed and the WJP theory with PD pump is analyzed. Numerical studies are carried out to study the suction thrust, reaction thrust, and propulsion efficiency of the thruster with Bernoullihyperbolic suction inlet-PD pump-Bernoulli hyperbolic nozzle. The results show that: 1) in the conditions of no cavitation in suction inlet and constant flow rate, the suction thrust is inversely proportional to the inlet diameter and reaches around 8.5% of the total thrust; 2) the reaction thrust increases with the decrease of the nozzle diameter; 3) the pump-suction coefficient v is proportional to the speed ratio μ; 4) the efficiency of WJP with PD pump is higher than with negative displacement pump under the same speed ratio. The related conclusions provide a basis for the design of high performance water propulsion unit.
Hydraulic Model Experiment and Numerical Simulation of Bottom-Blowing Copper Smelting Furnace
Authors: Yu Yue , Wen Zhi , Liu Xun Liang , Su Fu Yong , Lan Hai Peng , Hao Xiao Hong
Published: August 2014

A hydraulic model is used to study the flowing process within a bottom-blowing furnace designed by a company, and the VOF model is adopted to simulate its process. The VOF method can describe the formation, growing up and separation actions in theorizing process by comparing the simulation and experimental results, and this is a foundation of using a model to research the thermal process of the bottom-blowing furnace. It is indicated that a nozzle with disperse spouts can stir a larger zone, by comparing the influence on flowing process of four nozzles with different structures. The disperse spouts are benefit to increase the stirring and reaction efficiencies, but the pressure fluctuations near the nozzle export is more obvious, and it may affect the lifespan of the nozzle.
Numerical Simulation of Multi-Angle Incidence Aluminum Composite Targets with 7.62mm Piercing Armor
Authors: Li Yu Lei , Tang Jin Jun , Jin Xiao Yu , Wang Qun , Ren Zheng
Published: August 2014

To calculate the multi-angle penetration, this paper established a 3D finite element model of aluminum alloy plates and 7.62mm armor-piercing by using LS-DYNA software and the Johnson-Cook material model. The process of bullet penetrating 20mm thickness target with different angles of incidence was carried out. The impact of combinations on composite targets resistance projectile penetrating ability was analyzed. Simulation results show that,ballistic of composite targets can be between two aluminum target plate, clearly different combinations of composite targets for resistance to different angles of incidence between projectile penetrating relationship.
Leakage and Dispersion Modeling of Hydrogen in the Docking Process of Docking Mechanism and Exhaust Pipe of Rocket Tank
Authors: Li Yuan , Chen Jing Peng , Cui Cun Yan , Jiang Yun Chun , Li Xiao Yong , Li Xing
Published: August 2014

This paper illustrates an application of the mass transport model, turbulent model and dynamic mesh technique to the simulation of hydrogen leakage and dispersion in the Docking Process of exhaust pipe of rocket tank. Some numerical simulations are made to investigate on the effects of the tank pressure, docking mechanism and buoyancy. The experiment results indicate that tank pressure has significant influence in horizontal direction and vertical direction of hydrogen diffusion. Besides, the effects of buoyancy are slight. In addition, direction of hydrogen flow has been changed to vertical direction mostly at 2ms as a result of the action of docking mechanism, and there are no longer dangerous concentration areas of hydrogen inside the exhaust pipe after 2ms of leakage.
Structural Analysis of Servo Put Thread Machine
Authors: Wu Jia Qi , Zou Qing , sun Liang Zhong , Cheng Xiang Yu , Zhang Qi Chao
Published: August 2014

This paper results the tension of putting thread machine by analyzing and calculating the polarization grid technology requirements; uses CATIA and ANSYS Workbench to build a three-dimensional solid model and analyze the static characteristics and provides a reliable reference In order to improve the structure of put thread machine.
Analysis of III-Conditioned Characteristics about Weight Location of Rotor Dynamic Balancing
Authors: Wang Ke , Dong Zhixu , Cong Long Tao , Sun Xing Wei , Sun Meng Nan
Published: August 2014

Balancing with the influence coefficient method can eliminate rotor unbalance effectively and briefly which usually causes mechanical vibration. But the accuracy of this method is susceptible to operating condition and the structure of mechanical equipments will leads to unstable equilibrium outcomes. The theoretical study of the influence coefficient balancing method can find that the solution process of balancing weight does not involve the mechanical nature of unbalance vibration, and therefore it will be subject to greater interference of equation’s ill-conditioned characteristics. By introducing the modal superposition, vibration mode function can be linked with the influence coefficients to establish the relationship between counter weight location parameters and ill-conditioned equations. The simulation results of multiple-blade rotor shows that positions of balancing weight will exert great influence on ill-conditioned characteristics. So the position parameters should be chosen in front of balancing service reasonably.
Three Dimensional Dynamic Analysis of Crack Growth in Unreinforced Baked Brick Shear Wall
Authors: Chen Hao , Xie Li Li
Published: August 2014

This paper presents the 3D dynamic crack growth simulation of unreinforced baked brick shear wall by using particle discretization scheme finite element method (PDS-FEM), which is efficient and capable of computing bifurcation/branching in cracking. The technology of fast modelling of bricks and cements by applying VB script in AUTOCAD is illustrated briefly. The shear wall including mortar joints is modelled in detail. The model parameters are calibrated by using standard static tests. Since the computation cost is high in structural level fracture analysis, parallel computation technology is employed. Finally, with two-phase failure criterion of mortar under multi-dimension stress state, the performance of low and high loading speed is compared. The numerical results verify the availability of dynamic fracture analysis of masonry structure by using PDS-FEM.
Study on the Method of Online Adaptive Adjustment Method for Torsional Vibration Model of Turbine Shafting
Authors: He Xi , Gu Yu Jiong
Published: August 2014

The accuracy of safety analysis can be guaranteed when the torsional vibration model is adjusted online according to the inherent characteristics of the torsional vibration of the shafting. Torsional stiffness of model is set as the object for adjustment. The sensitivity of the natural frequency of torsional vibration model to structure parameters is analyzed and the sensitivity of the natural frequency of torsional vibration model to torsional stiffness is calculated. According to the difference between the natural frequency of torsional vibration which is get from actual shafting and the natural frequency of torsional vibration which is calculated by torsional vibration model, the adaptive adjustment of the torsional stiffness of mode is solved by using the method of Taylor expansion which ignore two times or more correction. The logic structure of the adaptive process of torsional vibration model is designed and the online adaptive function of torsional vibration model is implemented in the torsional vibration safety and analysis system. The torsional vibration modelof 1000WM turbogenerator is used as an example and the accuracy of the method is verified.
Using Inverter Frequency in Continuous Caster Length Cutting System of the Cutting Scale Calculation
Authors: Deng Xian Rui , Mu Jing Qin , Zhan Sheng , Ma Ning
Published: August 2014

In continuous casting industry, scale cutting is used to control the current domestic company’s adoption: "to touch the ball type", "friction roller number", "the camera imaging control type" and "the infrared switch control type" etc. Their cost and their accuracy are different. Inverter is the product of perfect combination of power electronic technology and computer technology. Inverter speed control precision is high, speed range is wide and energy saving effect is obvious, which is widely used in the motor system. Inverter changes the motor speed by changing the frequency. There are three ways to change the frequency (or change the frequency of the signal): PU panel, external terminal and communication cables.
Optimal Design of Hot Rolling Strip Mill Housing with Improved GA
Authors: Ma Jin Hong , Tao Bin , Yao Xiao Han
Published: August 2014

Mill housing vibration influents the strip thickness fluctuation. The longitudinal deformation of rolling mill will directly affect plate thickness difference. The longitudinal deformation should be reduced , improving the mill stiffness. Hot rolling mill is seen as is as subject investigated . The improved GA is used to optimize the mill housing parameters. The optimal result is analyzed. The housing stiffness improves. Low order natural frequency improves after optimization, avoiding resonance and improving the housing dynamic stability.
The Simulation of Rolling Process of Wire with Y-Type Roller
Authors: Ma Jin Hong , Tao Bin , Yao Xiao Han
Published: August 2014

Y-Type rolling mill with three roller is a new kind of wire mill.The three-dimensional models of rolling are established by Pro/E. Based on the finite element analysis software ANSYS/LS-DYNA, the rolling process of wire by Y-type rollers is simulated. The rolling piece movement is analysed. Stress and strain of Y-type roller are also analysed.
Simulation Modeling and Analysis of Hydraulic Steering System with Flow Amplification Based on AMESim
Authors: Lu Qian Qian , Shao Wei , Wei Jian Hua
Published: August 2014

Simulation model of Hydraulic steering system with flow amplification, which is widely used in traffic engineering machinery, is established in AMESim8.0.0 environment. Through the structure analysis of the system's three compositions, which are priority valve, steering gear and steering cylinder, are modeled by using the library of HCD. According to parameters of the actual structure of the system, the simulation parameters are set to every component of the model. Under the circumstances of step signal with different angle, rotation, and load force, the simulation results of the model turn out to be in accordance with the characteristic of the real system, which indicates feasibility and reliability of the model to specific performance analysis and optimization design.
Research on Application of Polynomial Regression Analysis for Computer Color Matching in Textile Dyeing
Authors: Yan Min , Zhang Bing Sen , Wang Dong Mei
Published: August 2014

The traditional color matching method for textile dyeing by experiences cannot meet the needs of modern production for color matching in textile dyeing. In order to solve this problem, a mathematical model for the three stimulus values CMY and the dye weight concentrations has been established by collecting and analyzing the actual data from a factory. We analyze this model by polynomial least square approximation and polynomial regression, and then we solve the dye concentrations with the Newton iteration method. Verification results show that the error between the experimental values and the actual values is very small. So this model has higher accuracy, and it can be used in actual productions.
Design of Fruit Sorting Machine of Weighing Type Based on Solid Works
Authors: Fang Qiang
Published: August 2014

Fruit sorting machine of weighing type was used most widely in fruit grading market, which study on its structure adopting traditional 2D plan method is too abstract to modify hardly. Therefore a new weighing type of fruit sorting machine was designed using Solid Works, through which the design is for stents, tray institutions, transmission system and sprocket shaft of the sorting machine was realized, and 3D model for the motor reducer and bearing socket was built so that the overall assembly for the fruit sorting machine was achieved. Afterwards,3D modeling, virtual assembly as well as compute clash and primary FEM analysis were carried out for parts of machine. The application results show that Solid works is beneficial to new agricultural machinery design, which shall shorten the development cycle and improve the design quality.
Long Voyage Vessel Data Warehouse Design and Application
Authors: Chen Dan Dan , Yao Zhi Gang
Published: August 2014

According to data accumulated for years by ship operation enterprises, this paper designs and develops long voyage vessel data warehouse in order to manage and analyze these data. This article gives a detailed description about the design of data warehouse including theme analysis and design method for logical model and physical model. On the basis of data warehouse, multi-dimension data set is built and OLAP is applied on ship voyage situation statistics and analysis. The result shows the long voyage vessel data warehouse in this paper is effective and practical.