Abstract—Lean premixed combustion offers a practical approach for the reduction of NOx emissions, but increases the risk of lean burn blow out (LBO) in gas turbines. Flame behavior in terms of stability is simulated in a model gas turbine combustor burning aviation kerosene at atmospheric pressure. The...

It is a very complicated problem that analyzing and calculating the magnetic field of the magnetic suspension spherical reluctance motor, because the structure of the stator and rotor, the distribution of magnetic field present three-dimension. By calculating 3-D magnetic field and analyzing the magnetic...

The paper presents a new magnetic levitation spherical driving joint. It analyses the theory of air-gap magnetic of the driving joint and the mechanism of the generation of the magnetic levitation force and electromagnetic torque which based on the principle of reluctance motor. The mathematical model...

Based on the discussion of the influence factors and status quo of Honing reticulate pattern processing technology, the paper makes simulation analysis of the reciprocating reversing acceleration of honing machine, in order to uncover the impact of acceleration changes upon the main Honing process parameters...

A motorcycle engine shell is taken as the research object in the paper in order to reduce the noise radiation of motorcycle engine. The noise radiation of the engine shell is analyzed by the finite element method and boundary element method ( FEM / BEM ), and the frequency range of the noise radiation...

WC-8Co and Nak80 is deposited on the surface of 45 steel by DZ-4000( ) multifunctional surface hardening machine what use argon as shielding gas. By means of changing the order of WC-8Co and Nak80 electrodes’ deposition and different of roughness of Nak80 coating’s surface, thesis analyzes the effects...

The influence of moment load on the fatigue life of thrust ball bearing is no considered in existing international standard. In order to solve the problem an increment of axial load is put forward, which is equivalent to the moment load in the meaning of bearing life. Based on this a new equivalent load...

When designing twin vane spin core water atomizing nozzle, it should have an appropriate ratio between the cavity aperture and the exit diameter of nozzle, we call it design-number. It not only affects the spray spread angle, also affects the flow passage size of the nozzle internal at the spin core....

The characteristics of the snake with a variety of motion patterns and multi-redundancy and multi-degree of freedom make it have powerful motion ability and good environmental adaptability, can pass through obstacles that human can’t. These advantages prompt us to study a new-type rope-drive snake-like...

According to the hydraulic integrated piece in project, it use pre-treatment software Pro/E which establish its internal torrent three-dimension model, and it use ICEM software which establish its model boundary conditions and mesh. Last simulated structure pipeline using software provided by FLUENT...

This paper explores the operating characteristics of times strength cylinder which drive electrode in steel welding nets machine, we establish the dynamic characteristics` differential equations about times strength cylinder’s internal cavity by application of first law of thermodynamics, and obtain...

Phase transition between liquid and vapor comes into existence when the velocity of the water entry device is sufficiently high, which will affect the flow field formation and development. Numerical simulations, implemented in the commercial CFD package FLUENT, with three popular cavitation models and...

In this paper we provide a detailed analysis on a fourcylinder wobble-plate compressor in the field of the motion simulation and dynamics. Then, according the results of the analysis, we program with MATLAB to come to the motion curve of the pistons, as well as the curves on the gas force, the piston...

The hydraulic system of mobile garbage compression equipment was studied according to its actual working conditions. A simulation model of the hydraulic system was established with AMESim software, and the speed and acceleration of the piston rod were simulated. Simulation results show that the designed...

Computational fluid dynamics (CFD) is considered as an effective tool to evaluate the performance of the autonomic underwater vehicle (in short, AUV) with propeller and rudders. This work simulates hull-propeller-rudder interaction under four different general arrangement conditions, and analysis on...

the performance of the aero winch which is installed on the helicopter affects the flight performance and flight safety. In order to conduct intelligent test of the aero winch, we researched a certain aero winch test system, this paper presents the hardware and software of the system, explains the operation...

This paper research on the multi-flow structure of extrusion die, with Circumference uniformly distributed method that all flow channels are set in a same cycle. Combination with the production of certain explosive, Simulates the progress of production of explosive and Analysis the distribution of velocity...

A spherical joint system driven by pneumatic artificial muscle is constructed. As pneumatic artificial muscle has strong nonlinear characteristics and traditional control methods are hard to overcome the contradictions among control precision, adjusting speed and stability, the 2 order auto-disturbancerejection...

A three-dimensions dynamic model of a typical underwater towed system which consists of the navigation body , the cable and the drag body is studied. In the model, the governing equations of cable system are established based on the multibody dynamics method. The cable is split up into a series of ball-and-socket...

Studying for the crankshaft-bearing system of a diesel engine in this paper, using the software of AVL-EXCITE set up the coupled multi-body dynamics simulation system of the crankshaft and bearings, the characteristics of oil film on main bearing were analyzed when the crankshaft under different impact...

With the instruction of computational dynamics of multi-body systems theory, the system of rigid bodies and rigidflexible bodies model of the diesel are built using CAE technology. Based on the models, considering the factors of fluid-solid coupling, modal coupling and feedback control technology, the...

In this paper, incompressible viscous flow is numerically analyzed by solving unsteady two-dimensional Navier-Stokes equations. Simulations are carried out by using an implicit fractional step method which consists three sub-steps: calculation of intermediate velocity, solution of the pressure correction...

A detailed three-dimensional finite element analysis model for an aero-engine compressor blade was established. Blade vibration response was experimented, considering a dry friction non-linear response method for solving for the fan blades. It can’t be calculated using the ANSYS platform when considering...

Roofbolter is introduced and classified basing on the different appearances; according to the roofbolter development process in China, roofbolter development history and profiles are summarized; the development and the characteristics in this field of other countries such as Europe and America are described;...

In this paper, the package TO-220C VDMOS devices are tested under the conditions of variable frequency and fixed-frequency vibration and the influence of vibration on source current leakage IDS and transconductance gm of device are discussed. The changes of device casing and chip surface are observed...

A noncontact inductive sensor was designed for the eddy current detection, the main structure of the inductive sensor is single-layer micro-planar coil. Two groups of micro-planar coils with different wire width, wire distance and wire thickness are fabricated by using electrochemical and MEMS technology...

This paper designs a test platform of servo system. The technique method of the test platform of servo system is studied, the structure diagram of the test platform of servo system is given; the way of loading friction resistance torque and moment of inertia respectively are designed, which realizes...

Slip phenomenon is very important factor by it we can know the actual amount of energy transferred to fluid. In this study i test the different parameters which may affect on this phenomenon such as discharge,exit flow angle, number of blades, type of fluid. i found the old Busemann, Stodola, Stanitz,...

Nonlinear dynamic finite element analysis system ANSYS/LS-DYNA is used to analyze the characteristics of cylinder piston impacts to meet the requirements of safety and stability for cylinder. Based on the fundamental theories of explicit dynamics, a finite element impact model of cylinder piston was...

The design of milling machine spindle with respect to dynamic properties can be classified as the solution to inverse eigenvalue problem. In the paper, the solution to the inverse eigenvalue problem based on artificial neural network is studied, the research results show that the direct inverse model...

In the structure of reducing the recoil force by jet gas for auto-weapon, the nozzle section is expansion. Within the nozzle, the state of nozzle flow will change, when high temperature and high pressure, high speed gunpowder gas get through the expansion section. The gas is directed to weapons rear...

Refer to the problems about the methods of steel tape calibration with hard labor work and low efficiency, it has been dealt with new calibration method based on digital image processing, which is used CCD camera to collect images of the steel tape standard at every meter, then modify the images with...

Airfoil optimization design has been carried out by panel methods for small size aerial vehicle at low Reynolds number. The optimization airfoil formulas were expressed by the NACA4 digital airfoil analytical expressions with a few optimization variables that made the optimizing computation quick. A...

By analysis on all kinds of the vibration source and noise mechanism, this paper points out the vibration and noise harm, cause and source of the hydraulic hoist hydraulic system. Further more it puts forward to effective and specific measures to reduce the vibration and noise of the hydraulic hoist...

The SEA (Statistical Energy Analysis) model of the hypersonic aircraft is established based on the SEA theory. Three parameters of the SEA model are determined by the theory, experiential formula and experimental data. Compared the simulation with the experiment, the results of numerical simulation and...

DK460UF is deposited on the surface of 9341 high-speed steel by DZ-4000( ) multifunctional surface hardening machine which use argon as shielding gas. They occur metallurgical reaction by electro-spark deposition technology to make electro-spark deposition migrate to the surface of the tool and form...

The debate on activity-based costing (ABC) method between researchers focuses on whether the cost driver selection is scientific and how to prove that ABC method is superior to the traditional cost accounting method. In this paper, regression model is adopted to test cost drivers’ correlation based on...

A hydraulic test platform of large component is designed in this paper. The technique method and design concept of test platform are studied. The structure diagram of the test platform is given, and the validity of the design by analyzing the structure of the loading system is also proved ,via UG software....

This paper discusses a teaching method customized for mechanical engineering students. Based on the educational goals of ‘competency-based learning’, where students specifically hunt for the skills they need to acquire, a more flexible way of designing has been taught to stimulate their creativity, as...

The torque coefficient of any wind turbine must have highest limit. In this paper, an analytical expression of torque coefficient associated with tip speed ratio and airfoil lift drag ratio of wind turbine with ideal chord has been deduced by integrating along the blade wingspan using the blade element...

The system is based on PLC and configuration software, and the SCADA power distribution monitoring system is designed. The system uses PLC to collect various intelligent instruments on site and electrical parameters of devices. they will be uploaded to the monitoring system by the switch through the...

Technology system has been in evolution. Solving contradictions of technical system is the driving force of evolution. All technical systems evolution follows certain objective laws. As an organism, the technical system itself is constantly changing. When the technology innovation evolutionary path through...

In the gear transmission system, especially , during the gear meshing transmission process of high-speed, heavy duty gear system, during a very short time of mono-, bis-teeth alternately meshing, the tooth mutation is generated by the loads, the tooth exciting and changes of tooth meshing stiffness are...

In the present study, numerical studies are carried out to investigate the heat transfer in rectangular duct roughened by square and trapezoidal shaped ribs on one wall using different fluids. The coolant fluids such as air, steam, air/mist and steam/mist were investigated. The computational results...

There is serious scaling and corrosion in water injection line of Liaohe oil field. By analyzing water quality, it is learned that water quality of Liaohe oil field was alkaline, and its alkalinity was relatively high, containing much calcium ion, magnesium ion, chloride ion, sulfate ion, sulfate ion,...

In the present work, computational simulations were made using SST turbulence model with Gamma Theta model which available in ANSYS CFX. Multi-trench configuration consists of two trenches together, one wider trench and the other is narrow trench that extruded from the wider one. Multi trench configuration...

This research analyzed the current situation and future development trend in auto after-sales service industry. Then based on the five dimensions of service quality (fairness, empathy, reliability, responsiveness and convenience), three dimensions of relationship quality (satisfaction, trust and commitment),...

Current water pipeline drilling scaling equipment cannot clean effectively. In order to solve this problem, analyzes the dill descaling method and the characteristics of virtual prototyping technology, improved the unit. Construct three dimensional models with SolidWorks software, define subassembly...

The machine vision system for the detection of the gear pitting is an essential element for the mechanical fatigue test, because the whole system effectively integrates internal information of the fatigue test to classify the related data into different sort automatically. Therefore, an industrial machine...

On the basis of researching the fluid flow meter calibrating method and device, this paper has designed a set of flow meter calibrating system which based on LabVIEW software. It mainly introduces the hardware device, software control system and influence factors of precision test. The system use the...

Valves play an important role in the reciprocating compressor running, which will open and close according to the different piston work phases in the reciprocating compressor to control the gas discharge or suction. The time to open and close of the valves have limited with many affection which affects...

Motion platform is widely used to simulate the movement of ship and vehicle, which is of great value for testing of ship and vehicle equipment, motion simulator for training to steer. A novel digital hydraulic 2-DOF motion platform for simulating marine environment is developed, which include incremental...

The LED node temperature rises with the increasing of power and it leads to sharp attenuation LED’s life, according to these characteristics, combining active and passive cooling methods to design a new type of heat sink. The maximum temperature of LED is controlled in 43 C . At last a heat analysis...

This paper analyzes the performance of aerostatic thrust bearing working in low-vacuum condition using Computational Fluid Dynamics (CFD) software Fluent. Load Carrying Capacity (LCC), stiffness, gas leakage of the bearings with different geometrical structures are calculated and the results indicate...

In this work, Two-Axis Fast Steering Mirror (FSM) was designed to facilitate the fast and precise positioning for an optical bundle of a Three Dimensional (3D) scanner consists mainly of a Laser Range Finder (LRF) and a Complementary Metal–Oxide–Semiconductor (CMOS) camera. The FSM system architecture,...

Dynamic characteristic of the micro plate under the micro scale effect shows non-linear features, traditional linear analysis methods can not satisfy the design precision of MEMS system, and non-linear dynamics analysis method provides an effective solution. In this paper, based on the small deflection...

Due to the complexity of the laser and material interaction, it is difficult to control the quality of the hole in the laser drilling process. The thermodynamic model of laser drilling is built which is based on the characteristics of the laser drilling and processing environment. The temperature field...

The existing alternative irrigation devices are still stuck in the stage manually select the irrigated area through human operation to achieve the selected area of irrigation, timeconsuming, response speed is slow. The existing irrigation devices need to use other means of experimental observations to...

Contact stress analysis on the high-speed double-nut ball screw has been done, contact deformation has been derived, and we got the formulas of axial stiffness of ball screws, and then we got some main factors which could influence the axial stiffness of ball screws, such as preload, helix angle, contact...

The configuration and working principle of a novel radial hybrid magnetic bearing (RHMB) are introduced in this paper, and its 3-D nonlinear finite element model, based on which air gap magnetic field distributions and magnetic forces on the rotor under different displacements and control currents are...

The target of this research is to make a study of the dynamics simulation about regenerative braking energy system of electric bus , and explore the feasibility of this system. Electric bus is rear axle drive and has rear-mounted biaxial parallel hydraulic hybrid system ,using AMESim software to establish...

The underground gas explosion test model to detect intensity of the mine refuge shelter is simulated through LSDYNA to obtain the surface pressure of the mine refuge shelter in underground gas explosion, using the TNT to replace the mixture gas. Pressure distribution of the front shelter is descending...

This paper deals with the speed control of a variable speed double-fed induction generator (DFIG)-based wind turbine. These variable speed control systems have several advantages over the traditional wind turbine, such as the increase in the energy capture and the reduction of the mechanical stress....

To ensure the variation of tooth backlash in allowable value required in common gears transmission, a new transmission mechanism was proposed in this paper to solve the problem of tooth backlash change, composed by an eccentric gear and an eccentric modified gear. The design principle of the eccentric...

Taking the spur gear as the study object, this paper introduces the method of reconstruction wear gear model by reverse engineering for gear laser cladding repairing. Using the laser scanning measuring system, through the reverse digital, point cloud pre-processing technology, matched 3D CAD model of...

The determination of frequencies and models in fluid of the structure is an important problem in the fluid-solid coupling study. We analyzed an axial flow pump blade by finite element analysis software ADINA in the paper, then we got its models in air and fluid respectively. The modal frequencies of...

Analitical solution of the inverse kinematics has been found only for some particular structures of 6-DOF serial manipulator. We propose the Method of Sequential Retrieval by modifying the Effective Solution for Inverse Kinematics to solve the inverse kinematics for a 6-DOF robot arm which has not been...

Numerical analyses were carried out to investigate the aerodynamic characteristics of clamshell fairing separation at Mach 5 in low altitude atmosphere. A three dimensional numerical model was set up. The flow fields of the closed fairing and condition at the initial opening angle were simulated. Results...

White body finite element model of a light-truck cab is established, with which numerical and experimental modal calculations and analysis are conducted. Based on modal matching principle, a dynamic characteristics analysis is performed, and on the same time, the cab structure optimization is carried...

The density of acquired data by 3D laser scanner is huge and is not convenient for curved face reconstruction, model reconstruction, data storage, data display and transmission. Firstly, the conventional point cloud data classification and simplification method is introduced. Secondly, the angle deviation...

An opening HIP (high and intermediate pressure) casing overhaul of a 360MW turbine should be taken in 2012 on schedule. And this kind of overhaul wasn’t taken on the turbine during the past 12 years from startup. But the overhaul needs to be delayed for some reasons. A comprehensive condition assessment...

The AC( Alternating Current) electric dynamometer test bench consists of an AC electric dynamometer,a traction motor,a frequency converter ACS800,a motor controller,a power analyzer WT3000 and etc. By simulation of ADVISOR,relationship between traction motor speed n and load torque Tz in ECE-EUDC driving...

A 3D model of the upper and lower support were established via ANSYS WORKBENCH14 on the basis of a new cooling system and both temperature and stress of different materials coupling simulation analysis have been done. The result shows that: One of the best choices of the material of the supports were...

In the thesis, “Personal Computer(PC) + Motion Control Card” program is adopted to design multi-axis automatic control system and presents the method to control the interface and procedures in LabVIEW through ActiveX technology. The use of servo motors with feedback function could achieve closed-loop...

The basic direct torque control (DTC) scheme may cause big ripples in torque, flux and current because of the small number of applicable voltage vectors. And the variation of the stator resistance has great influence on torque and stator flux estimation especially when the PMSM(permanent magnet synchronous...

The trend toward high power density engines has led to new implementation of more intelligent thermal management systems. Advanced thermal management systems for internal combustion engines can help in reducing the fuel consumption, pollutant emissions, warm up time, noise level as well as improving...

In an effort to improve the property of escort mechanism of vertical internal broaching machine, a new-style escort mechanism is designed. Work process and defect about structure of escort mechanism in existence is firstly analyzed in depth, design concept and implementation methods of the new escort...

The engagement of wet clutch was modeled by developing a modified Reynolds equation, based on the average flow model of Patir and Cheng. Influences of surface roughness, material permeability and centrifugal force were included in the model. The Greenwood-Tripp method was used to develop the asperity...

The effect on handling stability by active suspension is analyzed to select the most suitable modes of control input. After that, based on fuzzy sliding mode control algorithm, an active suspension controller is designed for improving performance of vehicle handling stability. Simulation is made to verify...

U beam steel arch has widely been used in nonferrous metal mines support especially in deep mining due to its ductile and high bearing capacity. This paper aimed at the simulation analyses based on the finite element method for U beam steel arch production. The comparison of the bearing capacity between...

The non-equilibrium flow and frozen flow of hydrocarbon scramjet nozzle were numerically simulated to research the non-equilibrium effects on the nozzle performance. The numerical results show the recombination occurs during the expansion in the scramjet nozzle, which is helpful to the nozzle performance....

A new wireless temperature measurement system which aims to measure the interior temperature distribution in a rolling tire is presented. In the system, Negative Temperature Coefficient (NTC) thermistor of bead type was selected as the temperature sensor; while a RF Module (Transmitters & Receiver) was...

Achieving high-accuracy and repeatable fabrication of nanoelectromechanical switch is a grand challenge. In this paper, a new approach based on 3-D nanomanipulation has been proposed to integrate zinc oxide nanowire with lithographically patterned electrodes. Compared with other methods, a high level...

Will design a good air compressor station system dynamic simulation run, will run process shows that for air compressor station design offer help and reference. Through the use of configuration software (KingView) complete air compressor station system simulation to verify the performance of the system,...

According to the requirements of United Nations on cluster munition submunition, this paper provides a kind of MEMS(micro-electromechanical Systems) suitable for the fuze, which uses turbine as the power of submunition fuze, and analyses flow field of turbine in the domain of work with simulation. The...

This article is about the principles of hydraulic experiments measurement and control simulations under Windows interface and the ways to realize them. Using C# and PLC , you can monitor, measure, output data and eventually finish your experiments. All your experiments are flexible and respond quickly...

With the preliminary hypothesis of constant bistatic angle, matching filter pulse compression with non-coherent bistatic ISAR imaging mechanism is adopted and the reason of space target migration through resolution cell (MTRC) while bistatic inverse synthetic aperture radar (ISAR) imaging is researched....

Mass imbalance is a common cause of vibration in rotating machinery, which can damage the rotary system or the whole system. To solve this problem, the best balanced measure is to perform real-time online dynamic balance compensation during operation. In this study, a new type of high-speed electric...

The paper analyzes the related research status of the complex network, and studies on construction method of networks of parts relation for products. By applying interpretive structural modeling to the product structure analysis, this article proposes one structure analysis method that based on interpretative...