bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on the Seismic Behaviors of Link Beam for Eccentrically Braced Low Yield Point Steel Frames
Authors: He Hai Jun , Cao Xian Lei , Hao Ji Ping
Published: October 2012

It was performed nonlinear finite element analysis for K-shape eccentrically braced steel frames on link beam. Analysis indicates that the strength, rigidity, ductility and energy-dissipation performance of K shape eccentrically braced steel frames deteriorate differently with the length increase of link beam. The shorter the link beam is, the larger plastic deformation of it, so it makes plastic collapse easily, while a long link beam has a poor cyclic behavior. At the end of this paper, compared with the experimental results show that the finite element method is feasible, the results can provide a reference for the engineering design and related research.
Modeling and Simulation of the PMSM-Precision Reducer System with Modelica
Authors: Li Zhi Hua , Yang Hong Guang , Yu Jun , Gong You Ping
Published: October 2012

There is still lack of effective modeling and simulation method for complex electromechanical coupling system. Modelica is a multi-domain unified modeling language to solve the modeling and simulation problems of the complex and heterogeneous physical systems. Dymola is a Modelica-based modeling and simulation platform for the complex physical systems. In this paper, the dynamics model of the permanent magnet synchronous motor (PMSM)-precision reducer system is established using Lagrange-Maxwell equation. The simulation model of this system is set up with Modelica language. The simulation of the system is realized in Dymola. Results show that the system can respond to good static and dynamic characteristics under a given speed for different loads. The dynamics model of the PMSM-precision reducer system can be further used in system control and optimization. The proposed modeling and simulation method based on Modelica may be commonly applied to other complex electromechanical systems.
Weld Seam Detection Based on the Genetic Algorithm
Authors: Ding Du Kun , Tan Wei
Published: October 2012

A new weld seam detection based on the genetic algorithm has been presented. Firstly, the experimental platform has been setup, and the welding images can be captured by the CCD camera in real time. On this basis, the process region, which is in front of the weld pool, has been determined. Then the median filter has been applied to reduce the disturbance of the noise producing during the welding period. Moreover, the GA has been deeply researched and applied to the weld seam detection. In the end, some experiments have been caught out, and the results show that compared with the traditional Ostu process method, the weld seam images, which are processed by the genetic algorithm, are more clearer and have less noise, which can meet the satisfy of auto welding system.
Finite Element Study on Dynamic Tension of Metal Ring by Electromagnetic Launching
Authors: Fu Ying Qian , Chen Hong , Dong Xin Long , Zhou Gang Yi
Published: October 2012

The technique of electromagnetic expansion ring was widely used to study the material uniaxial dynamic tensile properties and fracture characteristics. In this paper, the ANSYS Multi-physical FEM code was used to analyze the electromagnetic expansion process of metal ring. The distribution of the inductive magnetic field, the transient electromagnetic force and the deformation act on metal ring were discussed. The results show that the radial and axial magnetic pressure are existent in early stage of excitation current. The tensil strain of the ring could be approximately assumed as uniform. The plastic strain of the ring almost achieved maximum value after one cycle excitation current and then the deformation remains under subsequent attenuating excitation.
Numerical Simulation of 2D Model of Diffuser for Tidal Turbines
Authors: Mehmood Nasir , Zhang Liang , Khan Jawad
Published: October 2012

Researchers and engineers around the globe are striving to improve green energy technologies. Among green energy technologies, diffuser augmented tidal turbines are attracting focus due to enormous potential for producing energy. The power output by a tidal turbine is directly proportional to the cube of velocity of incoming fluid flow. Thus, even a minor increase in velocity considerably increases the power output. The diffuser helps accelerate the velocity of incoming fluid flow. Hence, the efficiency of the turbine is significantly increased by using a diffuser. It is challenging to to accelerate the incoming flow by a diffuser due to its shape, geometry and fabrication limitations. The diffuser design requires great deal of innovation and time investment. The research community is investing considerable time and financial resources in this arena. However, limited reserach results are available for diffuser augmented tidal turbines due to their emerging nature, large and costly research & development setup, startup cost and proprietary issues. The purpose of this paper is to present the numerical simulation of 2D model of diffuser for tidal turbine. Numerical simulation results of velocity profile for fifteen models with different mesh sizes is presented in detail. The effect of mesh density on coefficient of velocity is discussed. Predicted results are then compared to experimental results and found in reasonable agreement. The research is essential for utilizing CFD tools for diffuser design for tidal turbine.
Approximate Solutions of Generalized Fifth-Order Korteweg-De Vries (KdV) Equation by the Standard Truncated Expansion Method
Authors: Wu Jiang Long , Yang Wei Rong
Published: October 2012

It is difficult to obtain exact solutions of the nonlinear partial differential equations (PDEs) due to the complexity and nonlinearity, especially for non-integrable systems. In this case, some reasonable approximations of real physics are considered, by means of the standard truncated expansion approach to solve real nonlinear system is proposed. In this paper, a simple standard truncated expansion approach with a quite universal pseudopotential is used for generalized fifth-order Korteweg-de Vries (KdV) equation, we can get two kinds of approximate solutions of the above equation, in some special cases, the approximate solutions may become exact. The same idea can also used to find approximate solutions of other well known nonlinear equations. We find a quite universal expansion approach which is valid for various nonlinear partial differential equations (PDEs).
Study on the Error of the Three-Dimensional Structure Light Measurement Based on Triangulation Principle
Authors: Tang Yan Mei , Zhang Xue Chang , Liang Tao
Published: October 2012

The error of the three-dimensional structure light measurement is analyzed in the paper. The experiment is done to verify the presence of measurement error. The error of data is analyzed and some conclusions are gotten. The three-dimensional structure light measurement is based on the triangulation principle. The error distribution is different because of the view angle of measurement equipment relative to the part to be inspected, the effect of the external environment light and the effect of the data processing software system. Finally, the corresponding compensation measures are put forward in the paper according to different errors.
A Rotor Fault Feature Extraction Method Based on the Hilbert Marginal Spectrum
Authors: Wang Jian Wu , Zou Feng
Published: October 2012

In the paper, a fault feature extraction method for rotor system is proposed based on Hilbert marginal spectrum. Compared with the spectrum analysis method via Fourier transformation, it is more effective for the rotating machinery vibrating signal analysis. Extracting the rotor system fault feature frequency from Hilbert marginal spectrum can not only enhance the frequency resolution, but also remove other unrelated frequency component, so as to make the spectrum peak of the fault feature frequency more obviously, and the analysis diagnosis results more accurately. This method result is applied to the fault feature extraction and diagnosis of the rotor system, and the analysis results of the experiment signal verify the validity of this method.
Design and Calculation Method for the Floors of Heavy-Duty Garages
Authors: Zhang Guo Zhi , Li Han Fei
Published: October 2012

This article deals with the quality problems of the floors of a heavy-duty garage and discusses the current requirements of structure from architecture design specifications. The study measures and analyzes the actual service condition of the floors of the heavy-duty garage and proposes the design calculation method and structure requirements based on actual service demand. The rework process has shown its promising effects.
Computer Aided Design on Thin-Film Evaporator in Parametric Drawing
Authors: Jiang Ying , Liu Jie
Published: October 2012

This article introduces parameterized drawing technology on complete film evaporators by the classification of parameterized drawing strategy. And by sample of film evaporators parts graph drawing process, parametric parts prints and the assembly drawing strategy in detail. Development of aided design software of film evaporators would help users realize integration design of process design, and can greatly shorten the development cycle of the products, improve the design quality and enhance the competitiveness of their products.
The Application of MATLAB in Welding Image Processing
Authors: Liu Yuan Peng , Sun Xin , Wen Zhen Hua
Published: October 2012

Firstly the margin-detection methods commonly used are presented in this paper. The algorithm idea is that the edge points correspond to the local maximal points of original image’s gray-level gradient. These algorithms are very sensitive to noises if these images mixed much noise, which usually leads to wrongly detect noise points as marginal points, and the real edge can not be detected as the interference action of noise. However, we perform kinds of pretreatments on these images under the MATLAB environment and adequately make use of the functions of image processing toolbox to satisfy the need of edge detection. Lastly, Combined with practical examples, the specific application of MATLAB in edge detection is analyzed in detail.
The Uncertainty Analysis of Health Management Strategies for Aero-Engines
Authors: Wen Zhen Hua , Yin Xin , Liu Yuan Peng
Published: October 2012

The Aero-Engine Is the Heart of an Aircraft and Critical to the Flight Safety and Economy, Health Management in Total Life Cycle for Aero-Engines Is an Effective Way and Is Popularly Employed to Balance the Economy and Safety. however, it Is Difficult to Make Appropriate Health Management Strategies for a Complex System, such as Aero-Engines. Firstly the Uncertainty Source of Fault Diagnosis and Prognosis System Is Explored. then the Primary Uncertainty Sources Including Condition Information, Monitoring and Detection Approaches, Signal Detection, Remaining Lifetime Prediction and Maintenance Strategy-Making, Are Analyzed in this Context. the Corresponding Tactics for Reducing Uncertainty Are Proposed in the Paper, which Provides Essential References for Assisting the Design for Health Management System.
Study on the Quality and Accuracy of Blanking Workpiece
Authors: Liu Chun Lin , Shang Wei Yan , Min Wen Lin , Xiao Liu Yin , Cheng Cun Yue
Published: October 2012

In order to improve the quality and accuracy of blanking workpiece, reasonable measures have been proposed during the production process. Firstly, the quality precision of blanking workpiece has been classified into three grades, corresponding to each type of dimensional accuracy, reasonal range of blanking clearance has been selected. Then the relationship of blanking clearance size with blanking quality has also been analyzed, and the affection of blanking clearances to dimensional accuracy has also been analyzed.At last, the method to improve the workpiece quality has been proposed, and the measure has been put forward to solve problems of quality and accuracy. The results refer useful references to improve the quality of stampings.
Restoration and Enhancement of X-Ray Images of Molten Pool during Laser Deep Penetration Welding
Authors: Xiang Jun Bin , Gao Xiang Dong
Published: October 2012

Owing to a strong capability of penetration, the radiography can be used to observe and analyze the formation of a molten pool inside weldments during laser deep penetration welding. The shape of a molten pool and the thermal transmit of laser through keyhole can be monitored and analyzed in real-time. During a high-power fiber laser bead on plate welding of Type 304 stainless steel, a high-speed radiography camera was employed to capture the molten pool images. These captured X-ray images were degraded by the disturbance and noises from the welding process and radiography devices. This paper proposes an efficient arithmetic to restore and enhance the X-ray images of molten pools. The point spread function (PSF) of X-ray image degeneration was obtained through blind deconvolution, And the PSF was applied as a parameter to implement the constrained least squares filtering of X-ray image of a molten pool. Also, the X-ray image was enhanced by contrast stretching transformation. Experimental results showed that the proposed arithmetic of image restoration and enhancement could improve the quality of X-ray images efficiently and protrude the contour feature of a molten pool.
Detection of Weld Pool Width during Strong Arc Disturbance Environment
Authors: Jiang Liang Zheng , Gao Xiang Dong
Published: October 2012

Detecting the weld pool width is prerequisite to control the welding quality. However, in an arc welding process, it is difficult to obtain a clear image of weld pool due to strong arc disturbance. A method is proposed to lessen the arc disturbance and obtain the width of a weld pool. A camera was used to capture the weld pool images during the arc welding process. The frequency domain filter combined with spatial processing algorithms were used to depress the noises in the pool image. During arc welding, the weld pool was in a liquid state and showed specular reflection due to the arc light effects. Because of the specular reflection, edges of the weld pool exhibited different brightness from that of the internal weld pool where a camera hangs. According to this phenomenon, it was easy to recognize the outlines of the internal and external weld pool. After the image noise of the weld pool was eliminated by an image filtering algorithm, then the line scanning on the image was carried out. It was crystal-clear that the external edge and internal edge demonstrate different grey levels. Therefore the method could be utilized to identify and extract the internal weld pool width and external weld pool width.
Research on Improving Oracle Query Performance in MES
Authors: Zhao De Yu
Published: October 2012

The tuning for Oracle database system is vital to the normal running of the whole system, but it is a complicated work. SQL statement tuning is a very critical aspect of database performance tuning. It is an inherently complex activity requiring a high level of expertise in several domains: query optimization, to improve the execution plan selected by the query optimizer, access design to identify missing access structures and SQL design to restructure and simplify the text of a badly written SQL statement. In this paper, the author analyzes the execution procedure of oracle optimizer, and researches how to improve the oracle database query performance in MES.
Corrugated Single Plane Pressure Control System Based on S7-300
Authors: Ye Jian Mei , Liu Bin
Published: October 2012

We proposed the structure and technics process in corrugated single plane pressure control system through the combination of weighing module SIWAREX and PLC S7-300. We also introduced the system work principle, the hardware configuration and PLC software design. As the special weighing module is applied here, the stability of the pressure load signal has been significantly improved to satisfy the pressure requirements of the board production process. The pressure can be set from the central control room in the production line or the workshop office through network to realize intelligentl control in production management so as to save the production data and avoid the paper break or bad conglutination problem. This design will have a very good application in the area of corrugated packaging in the future.
Current Analysis of Power Devices of the Sub-Module in New Modular Multi-Level Converter
Authors: Xie Yan , Chen Bo Chao , Chen Yao Jun
Published: October 2012

This paper introduced a new modular multi-level converter (MMC), which could enhance the voltage and power level by sub-converter modules in series and was easy to extend to any level of output. Its structure and working mechanism were described.By analyzing the new modular multi-level converter (MMC) working mode, its sub-module four power devices’ current distribution is detailed analysis. It can further guide the choice of the device. The simulation results show that the analysis is correct and effective. It can provide a valid theoretical basis for the choice of the MMC sub-module power devices.
Design and Research of Double Outlet Abrasives Forming Machine
Authors: Jin Sui Ying , Jia Yu Jing , Cheng Guang Zhen
Published: October 2012

This article provides an abrasive forming machine, the working principle is that: deliver and squeeze out the semi-solid abrasives which after the mixing treatment through the screw, and set up the same cross-sectional shape and size double outlet mould on the export side, Strip abrasives exported from the extrusion cut into granules by pneumatic cutting device, to realize palletizing requirement. Screw conveyor extrusion mechanism, pneumatic cutting device, combined with appropriate travel switch, Electrical control system, to realize the logical relationship of processing requirements, And compared to double exports abrasive machine, Work efficiency increased 1 time.
Power Line Interference Removal Method Based on Unifying Model Blind Separation Algorithm
Authors: Chen Lei , Zhang Li Yi , Guo Yan Ju
Published: October 2012

A novel power line interference removal method based on blind signal separation algorithm was proposed. The regular methods for power line interference removal were notch filter method and adaptive filter method. Part of the frequency component in desired signal would lose if there was same frequency component between power line interference signal and desired signal. The desired signal and the power line interference signal was commonly coming from different source. The power line interference removal problem was transformed into blind signal separation problem by constructing observation signal artificially. The blind separation algorithm based on unifying model was used for solving the transformed blind separation problem and the desired signal without power line interference could be got. The simulation results on electrocardiogram signal show that the power line interference can be removed efficiently using the method proposed and the signal recovery precise is high.
The Fault Diagnosis for the Unplanned Downtime of the Roller Disassembly Machine
Authors: Jia Yu Jing , Cheng Guang Zhen , Dai Ying Jun
Published: October 2012

This paper provides a kind of fault diagnosis method. It introduces the principles of the electrical control of roller Disassembly machine and the phenomenon of sudden power failure in the work. By analyzing a variety of factors that may lead to fault, and taking some appropriate solution, According to calculations, replaced the control transformer as the BK-300 that keep the roller disassembly machine safe and reliable, and avoid the phenomenon of power failure. Point out That the control transformer capacity should meet the required transformer capacity of the control circuit when it has the maximum load; Some control components have been working, when other control components is started, it still remains active.
Local Laser Bionic Blocking Experimental Study of Hot Work Mould Surface Cracks
Authors: Zhao Kui Peng , Liu Li Jun , Zhang Xue Chang , Jia Zhi Xin , Li Ji Qiang , Yang Wen Hao
Published: October 2012

For the short life of hot work die in enterprise directly caused problems the waste of resources and the rising cost of production. Based on studying the biological prototype of crack-resistance of plant lamina and found that surface thermal fatigue crack is one of the main factors affecting the service life of hot work mould, it is put forward thoughts about the local bionic laser melting on mould surface to block cracks. Different from the traditional mould surface integral laser transformation hardening (LTH) technology, using laser melting simulating plant lamina to block cracks on the partial surface of mold, life of bionic strengthened die is improved within 1~1.5 times. Experiment results show that a new method is provided to improve the service life of casting mould and promoting this technology will bring significant economic benefits for the mould industry.
Finite Element Analysis of Press Casing of Screw Press
Authors: Li Shi Long , Hu Zhi Gang
Published: October 2012

The pressing chamber is the heart of the screw press, it forms the drainage barrel and has to contain the operating forces of the press. As press casing is an integral part of pressing chamber, the strength of the press casing ensures normal operation of the press. The mechanical models of pressing chamber of the ZX10 type press created in MATLAB 7.0 for linear programming, and the 3D model of the press casing created in UG NX4.0 software were imported into ANSYS 9.0 software and a linear static finite element analysis was performed. The visual deflection patterns the part experiences under "real world" loading conditions were obtained so as to complete the security check of strength.
Design of Ship Abio-Fabric Fireproofing Curtain Equipment
Authors: Yang Zhi Qing , Chen Shun Huai , Zhong Chen Hua , Zhu Xiao Jun
Published: October 2012

It has been done that the application of abio-fabric fireproofing curtain in Ship fireproofing division designing. The experiment has been studied of the performance of double track fireproofing curtain. From the result, it tests that double track fireproofing curtain can prevent fire spreading and it’s heat insulation performance is evidence. The study has tested the feasibility and validity of the double track fireproofing curtain was used in Ship for fireproofing division design. The result of this paper could be reference to the double track fireproofing curtain was used in Ship for fireproofing division design.
Study on the Effect of Containment Performance on Lodine Source Term
Authors: Mehboob Khurram , Cao Xin Rong , Ali Majid , Khan Rehan
Published: October 2012

In this paper, the iodine source term is studied with the containment performance in normal, isolation, and emergency state of containment. For this study, a MATLAB computer-based program is developed, which simulates the iodine source term with time. The environmental iodine source term is determined with time normal, isolation and emergency state of containment. With the operation of Engineering Safety Features ESFs the effect on the iodine source term has been observed. From the results, it is observed that the iodine is strongly dependent on the exhaust rate and significantly reduced with ESFs operation.
Design of Combined Cam Used in the New Jacquard Device Based on PROE and AutoCAD
Authors: Liu Fu Jun , Yuan Yan Hong
Published: October 2012

The key point of the design of combinatory cam is the design of vice-cam contour curve. A series of dots on the follower’s path curve which driven by the unknown vice-cam were achieved by using the PROE’s curve modeling capabilities and motion simulation function. Then import these points into the curve fitting capabilities function of AutoCAD and a certain extent smooth curve that stringing every point were obtained. Finally, the curve we got from the last step was imported back into PROE, and the unknown vice- cam can be deduced.
Active Compliance Control for the Leg of Hexapod Robot HITCR-II
Authors: Zhao Jie , Zhang He , Liu Yu Bin , Zhou Zi Wei
Published: October 2012

Walking is an effective way of locomotion for the robot system; especially for the Hexapod robots, walking offers a better robustness for its redundancy of limbs. In order to enhance the adaptability of walking on unstructured terrain, a hexapod robot leg structure with the sensing ability has been developed. This structure is equipped with the 3-D force sensor at the tibia and the torque sensors at the first and second joint. The compliance control has been adopted to control the force of the foot end, and by combining with the real-time parameter estimation algorithm, the shape and stiffness can be updated to make the robot adapt to the mutative terrain better. Thus, the self-adaptively active compliance control for the hexapod robot leg has been realized, and the effectiveness of the controller has been verified through virtual simulation.
Application of VC++ and MATLAB Mixed-Programming Based on MATCOM in Signal Processing
Authors: Zhang Long , Zeng Guo Ying , Zhao Deng Feng , Zeng Hong Qiang
Published: October 2012

By research of the mix technology of VC++ and Matlab based on Matcom software, the insufficiencies of data processing in VC++ and visual programming in Matlab have been sloved effectively in signal processing. The own definition functions by matlab can be converted to the C code with Matcom,then the functions can be called anywhere if you need.Using this mix technology, the vibration signals collected by UA307 data acquisition card have been transformed by FFT and the results are consistent with Matlab’s. The mixed-program can operate independently without Matlab software and this method is a good reference to the development of the signal processing system.
Computer Simulation of Drying Process in Tube Rotary Dryer
Authors: He Hua Bo
Published: October 2012

With the particle transfer model and object-oriented programming method, the initiatory computer simulation software of indirect drying process is developed in windows XP system and MFC environment. The overall coefficient of heat transfer in the drying process and the changes of material humidity and temperature between the inlet and outlet are calculated by the simulation software. The actual test data verify that the computer simulation software is convenient, effective and reliable.
The Design of Dual-Box Pier Anti-Collision Device Based on Rubber Cushion
Authors: Liu Jun , Cao Jian Nan , Sun Bao Shou
Published: October 2012

Ship anti-collision device with flexible box structure is a new protection to pier device. By simplifying the rubber cushion dual-box pier ship anti-collision device as elliptic physical model and by simplifying the elliptic rubber cylindrical air cushion as linear elastic spring element, this paper can build the relationships between torque equation, elliptic structure parameters and equivalent elastic coefficient under different loading force. When outer steel ring takes a small displacement translation, the reverse force is only related to parallel direction of displacement and has a linear relationship with displacement. Making an analysis on elastic response of translational-rotational device, it can be approximated as a pure rotation curve under certain conditions. And the equivalent elasticity coefficient is only related to translational-rotational joint effect. The results will help the flexible dual-box ship anti-collision device to apply.
The Structural Design of Friction Energy Dissipation Interceptive Devices with Constant Resistance
Authors: Liu Jun , Qian Xiao Long
Published: October 2012

In the fields of bridge anti-collision, it is always a headache to protect bridges from being damaged when it is collided by large-tonnage ships. This paper presents a kind of friction energy dissipation device with constant resistance which is equipped with two-way mechanism to exert force and take C/C composite material with high-temperature resistant as the base material of the friction plate which can bring large and constant (high temperature stability) friction force. Then consume the huge impact kinetic energy resulting from the ship’s deviation from the right channel when navigating by doing work of the friction force and transfer this huge kinetic energy into the product of force(friction) and the displacement that cable releases, exchanging energy for space and consuming the huge energy through expanding space, which can get the goal to protect the bridge. What’s more, we have modeled for the key part of the mechanism exerting two-way force and optimized by finite-element analysis method so that the structure of this mechanism is simple, stable and has long service life.
Design and Analysis of Vehicle Berth
Authors: Yang Jia , Qiu Li Jun
Published: October 2012

Design of motor sleeping berth is to solve two problems. One is to solve the structure design of sleeping berth. The other is to solve the comfort design of sleeping berth. Now the problems of coach sleeper design is to pursuit the berth quantity . Ride comfort for passengers was neglected. Using a limited body space is correct, but should also consider the ride comfort. Design of sleeping berth should be combined with the passenger ride comfort level and berth number. Sleeping berth structure and arrangement is the basis of design. Longitudinally aligned and laterally aligned is the two installed ways of sleeping berth in a vehicle body. The sleeping berth is two layer. The height between two berth is determined by the riding comfort. Sleeper between Staggered heights between sleeping berth were used as a pillow and foot position location. The same layer sleeping berth is alternately up and down position to solve the pillow and foot position height problem. Reducing the height of pillow position is lying to.Increaseing the height of foot position makes the human foot to spread. Each sleeping berth is provided with a small goods stowed position. Passengers carrying small articles can be stored securely.
Derivation of the Kinematic Differential Equation for Bending Characteristics of the Bimorph
Authors: Hua Shun Ming , Wang Xiao Jun , Wang Yi Qiang
Published: October 2012

The bimorphs in this paper are provided with electrodes in parallel manner. When an electric field is applied, one plate elongates and the other contracts. This results in a bending motion and used for actuators or sensors. According to plate theory assumptions, establish the strain deflection expression firstly. And then, derive the strain-stress relation of PZT layer from g-type piezoelectric equations. Finally, some general equations are derived for piezoelectric laminated plates and can be used in theoretical or simulation analysis. Mainly, a kind of deflection differential equation about 3-layer electrical parallel piezoelectric thin plate has been obtained. Furthermore, replacing static load by initial force per unit area, the kinematic differential equation has also been derived.
Vibration Analysis for Pigging of Suspension Pipe Bridge
Authors: Wang Wen Ming , Zhang Shi Min , Song Shang Na , Li Yin
Published: October 2012

Suspension pipe bridge is the key part of oil and gas pipeline system. Liquid loading during the pigging process will cause strong dynamic load of impact, thus the stability of structure will be destroyed. Paper establishes the pipeline pigging model suffered by the stress, analyzes the stress and vibration equation of the pigging pipeline. With the dynamic finite element simulation by the method of variable load, paper analyzes the vibration numeric of the pigging pipeline when the pig goes through the pipeline. The analysis of this paper provides the technical support and theoretical basis for pigging work.
Research on General Remote Monitoring System for Industrial Equipment
Authors: Xu Dong Ming , Shu Li Sheng
Published: October 2012

A general embedded remote monitoring system for industrial equipment has been designed based on Field Bus Technology and Internet Technology. The Field Bus includes PROFIBUS, CAN, RS-485 and RS-232. The data of the device controlled in the system can be detected and transmitted to PC via Internet. Upper monitor in the system is remote PC. Console computer, which can communicate with industrial equipment controller by Field Bus, is the controller of field data acquisition unit. Two working modes can be realized in the system. One is the data of operating status, which is gotten by Field Bus before transferred to PC. The other is the data of operating status, which is detected by field data acquisition unit in remote monitoring system. Maintenance and management becomes convenient after applying the remote monitoring system.
Customer Call Response System Based on CTI
Authors: Tu Jian Fei
Published: October 2012

Detailed and intact customer material, and fast and prompt response to customer call via mobile phone, telephone and other methods are two significant aspects of good customer service. This paper has analyzes CTI technology’s application on customer call response system, and proposed a practical program structure for customer call response based on CTI integration technology, and provided program procedures and practical examples.
The Analysis of Initial Welding Defect and Structure Improvement of Converter Loop
Authors: Tong Jin Yu , Pan Zi Wei , Bao Jia Han , Xu Xiang Rong , Pan Tian Cheng
Published: October 2012

Aimed at the welding initial defect fatigue extension of 300t converter loop in a factory, the whole assembly finite-element (FE) model of converter loop with the welding initial defect is established. The converter loop FE model with different depth initial defect is computed by using 3D nonlinear finite element method at different tilting angles. And the stress intensity factor is extracted and analyzed under different working circumstances. The analysis results show that when the initial defect depth is greater than 11.715mm, the defect will result in fatigue crack extension at the complex alternating stress. To solve the cracking leakage problem of converter loop, the original welding manholes is replaced by the movable manhole. In the past over one year, the fatigue cracking and leaking phenomena did not occur in the converter loop, so the effect is obvious.
Research on Concept System of Rotation-Mirror Symmetry in Mechanical Systems
Authors: Ma Zhi Yong
Published: October 2012

Mechanical rotation-mirror symmetry is grouped by rotation symmetry and mirror symmetry, and belongs to mechanical static structure symmetry. Collecting and Analyzing a lot of rotation-mirror symmetric instances, and referring to the researches on concept systems of rotation symmetry and mirror symmetry, the concept system of rotation-mirror symmetry was established. The concept system is classified by discrete mirror and continuous mirror rotation-mirror symmetry, unidirectional rotation and bidirectional rotation rotation-mirror symmetry, directed rotation and deflecting rotation rotation-mirror symmetry, entire rotation and partial rotation rotation-mirror symmetry. The concept system can completely contain all kinds of existence of rotation-mirror symmetry in mechanical systems.
A Random Patch Algorithm Based on Markov Chain
Authors: Xu Hao , Xu Xiang Rong
Published: October 2012

The Naive Bayesian classifier is the least sensitive to missing data in the methods of data mining. However, missing data still affects the accuracy of the classifiers before the dataset which contains missing data used to train in the classifier. We can fill up the missing data to gain a full dataset. This paper introduces a random patch algorithm based on Markov Transition probability. This algorithm can fill up the dataset which contains missing data to a full one. Using the full dataset to classification can increase the accuracy of the classifier. We perform experiments to prove the algorithm effectiveness.
PRO/E Modeling and CFD Analysis of Diesel Engine Port
Authors: Zhang Liang Feng , Chen Duo , Liu Ming Wei
Published: October 2012

Explore the influence of gas flow conditions geometry of the diesel spiral airway, which predict the performance of the design of the airway. And the direction of improvement and optimization theory, using CFD technology to explore such away preliminary attempt, based on Pro/E to build the model of airway fluid entity, and use a common geometric standard model into the finite element analysis software ANSYS to analyze to get the airway export velocity distribution, turbulent kinetic energy distribution and other results. It is assessed on eddy current level of Angular momentum flux, and airway improved.
Multi-Point Sequential Sampling Method for Complex Engineering Optimization Problems
Authors: Zhang Si Liang , Zhu Ping , Chen Wei
Published: October 2012

Metamodeling techniques are commonly used to replace expensive computer simulations in complex engineering optimization problems. Due to the discrepancy between the simulation model and metamodel, the prediction error in predicted responses may lead to a wrong solution. To balance the predicted mean and prediction error, the efficient global optimization (EGO) algorithm using Kriging predictor can be used to explore the design space and find next sample to adaptively improve the fitting accuracy of the predicted responses. However in conventional EGO algorithm, adding one point per iteration may be not efficient for the complex engineering problems. In this paper, a new multi-point sequential sampling method is proposed to include multiple points per iteration. To validate the benefits of the proposed multi-point sequential sampling method, a mathematical example and a highly-nonlinear automotive crashworthiness design example are illustrated. Results show that the proposed method can efficiently mitigate the prediction error and find the global optimum using fewer iterations.
Research of Constructing Product Project Economics Analysis Model of Dynamic and Static Financial Status
Authors: Bu Zhi Qiang , Xie Zhi Bin
Published: October 2012

This paper adopts the methods of classified research and examples validation to study constructing product project economics analysis model of dynamic and static financial status. It is found that expanding dominant economic analysis to a wider range of overall resources analysis is benefit for operators to make more overall and long-term qualitative and quantitative decision. The result indicates that for small and short-term investment behavior, managers tend to use accurate and static project condition analysis model to evaluate operation condition; For long-term industry project, it is necessary for the company to construct a dynamic project management condition analysis model to help make decision; For long-term strategic interest, managers tend to increase investment and continuously reform product performance and innovate product function to strengthen the ability of winning resources when the company acquired more than expenses, but when the company acquired less than expenses, managers need to constantly adjust product project's profit structure, resist rival marketing and technology offensive, and seek breaking point of special local advantage area and market positioning.
The Research on the Methods of Experience Design
Authors: Han Wei Guo , Wu Zhi Jun
Published: October 2012

Based on the new economic background, experience design emerges as a new design method, which emphasizes that the design can bring more emotional involvement to the users. Due to the fact that it places more emphasis on the experience from the users, the design aims to create certain experience, and show considerate concern about the users. Thus, it broadens the mind of designers, and enlightens them on more creative products. The paper analyzes the psychological activities the users experience, then leads to the special characters of the experience. Moreover, it goes with the process and method on the experience design and illustrates them with practical cases.
Product Family Development Based on a Flexible Product Platform
Authors: Huang Yan Li , Dai Xiang Dong , Xiao Yu Ting
Published: October 2012

This paper discusses product family development on a flexible product platform. It firstly analyses furniture product market positioning,product type and future trends, then, by depth analysis of furniture product market development trends, draws the predictable part in the development trends to guide the design of furniture product,at the same time, analyses potential consumer needs and trends in unpredictable direction to identify future design attributes and design parameters, creates a design parameter matrix to obtain main design parameters,through the main parameters mapped to the physical structure (shape and structure of furniture product),and finds out core shape and furniture structure. By above analysis of a flexible product platform,based on this platform, combining the optional elements with variant design elements, we can design a series of furniture product family.
Single Hydraulic Prop Disassembly Machine
Authors: Jin Sui Ying , Cheng Guang Zhen , Jia Yu Jing
Published: October 2012

This paper introduces coal mine single hydraulic prop repairing actuality and a type of Special disassembly machine using to disassemble single hydraulic prop. Describes the main components of the machine, it have the main motor, reducer, rotating hydraulic chucks, remove column cylinder, fixed hydraulic clamp, disassembly valve device. Discuss its composing structure, work principle, machine process, main specialty, the technical problem what this machine can solve and using this machine for attainability purpose. Point out its advantage: operation convenience, reduce the labor intensity of workers, saving auxiliary time, increasing efficiency, reducing shock and prolonging life.
The CAE Simulation of the Printer Cover Panel with Gas-Assisted Injection Molding
Authors: Zhang Guo Qiang , Xie Mei Ting , Wang Wen Juan , Zhai Ji Qiang
Published: October 2012

Numerical simulation in the printer cover product molding process with gas assisted injection molding was carried out by means of computer aided engineering. The filling process and surface quality were forecasted. The simulation results provide an important reference for the selection in the production process parameters. Compared with the production molding process and the actual product, CAE technology used in actual production and design is entirely feasible.
System Optimization on Course Group of Modern Machinery Design Method
Authors: Xi Ping Yuan , Wang Bing
Published: October 2012

Modern machinery design method is the effective means to solve practical engineering technical problem, so it is very necessary to develop modern mechanical design thought and grasp modern mechanical design method. Through the teaching of the modern mechanical design method the students could grasp this method and the basic design means, and has certain solving ability to practical mechanical engineering problems in this method. In this paper we would thoroughly analyze the teaching situation of course group of "modern machinery design method"; and rational plan teaching content of course group, and according to the achievements in scientific research of teachers, develop appropriate teaching courseware and teaching software in teaching.
Design of Prestressed Concrete Continuous Rigid Frame Bridge with V-Shape Piers
Authors: Zhao Shun Bo , Liu Shi Ming , Li Xiao Ke
Published: October 2012

This paper introduces the design of a prestressed concrete continuous rigid frame bridge with V-shape piers built in Shijiazhuang city, China. The model and structural shape of this bridge were stated considering the factors such as hydrology, environment, artistic display and construction technology. The V-shape piers in main elevations combining the changed sections and larger hanged roof of box-girder gave out the lively and attractive views of whole bridge. The design software MIDAS/Civil was applied to build the numerical model for analyzing the static properties of the bridge structure. The results show that the loading performances of the bridge meet the specifications of current Chinese design codes. The bridge has been constructed and operated since Jan. 2010, which is becoming a main linkage between city and outskirts, and a landscape of the Taiping River Park of the city.
Study on a Nearest Neighbor Algorithm for Point Clouds Based on the Space Partition Principle
Authors: Zhang Xue Chang , Liang Tao , Tang Yan Mei , Zhang Xu
Published: October 2012

In the product modeling based on the reverse engineering, the point cloud data smoothing and multi-view point cloud data registration will be related to search some nearest neighbor points. The search speed will determine the efficiency of product modeling in some cases. The paper analysis the nearest neighbor point query algorithms, KD tree and Range tree, based on the space partition principle. The tree structure creation and query method are described by pseudo-code in the paper. Finally, the experimental results involving different sizes point clouds demonstrate that KD tree and Range tree have their own advantages in space storage and time complexity. Two data strictures all meet the efficiency of the search algorithm.
Development and Application of Simulation Module for Performance Analysis of Chassis Platform
Authors: Ning Xiao Bin , Xu Ping , Qiu Bin Bin
Published: October 2012

In order to analyze the adaptation of an automobile chassis platform in handling stability and ride comfort when assembled in different car models, VC++ and ADAMS were used to develop a specific simulation module for suspension performance analysis of the chassis platform, which could not only create the parametric modeling of the front and rear suspension, the other subsystems and the whole vehicle quickly, but also accomplish the analysis and optimization of handling stability and ride comfort. By adopting this module, kinematic simulation analysis and vehicle simulation model for the front and rear suspension of this chassis platform when assembled in two different cars models named A1, A2 were carried out, then steering pulse simulation analysis which can reflect handling stability, score evaluation and ride comfort in random road were proceeded according to the national standards. The results show that this simulation module has superior application value in engineering and the two different car models equipped with this chassis platform have better handling stability and ride comfort.
Researching Knowledge Management and Cultural Innovation of Chinese Traditional Color-Culture for the Purpose of Computer Design
Authors: Zhou Yue Xi , Zhang Xi Miao , Zhang Qian
Published: October 2012

Chinese traditional color-culture (CTCC) is the important foundation to build the human color cultural discipline. In order to carry on the knowledge management and cultural innovation, the introduction of management principles to CTCC is imperative. Firstly, based on computer technology and interdisciplinary knowledge, the paper uses game theory to analyze the necessity of carrying on the knowledge management and cultural innovation for CTCC. Secondly, the management principles are used to form the sub-systems of CTCC, and to carry on its knowledge management. Finally, we explain the culture innovative ways of the seven sub-systems of CTCC. By carrying on knowledge management and cultural innovation, it can be used in the design-education and the computer design, and in establishing a good foundation for the color-cultural discipline.