Machine spiral bevel gear tooth surface will be associated with the machine error in the event of a failure, the mathematical model with the use of the new method of calculation error based on better understanding of spiral bevel gears, the error theory and the law of error flank tooth surfaces calculated....

Thermal spray technology is one of the key supporting technologies of remanufacturing engineering, and it is an important technical means to realize the rapid recovery of the surface dimensions of the damaged parts, to improve the performance and prolong the service life. In this paper, the main shaft...

In order to improve the accuracy and design efficiency of fixture, UG and ADMAS software has been introduced into the fixture design process, and the co-simulation function of software has been applied, and the fixture reasonable layout and the clamping force calculation and synchronous optimization...

To investigate the effects of intake temperature on the performance and operation range of HCCI engine fueled with n-butanol, the 2nd cylinder of a water-cooled, naturally aspirated diesel engine with 2-cylinder was modified to operate on HCCI combustion mode. The indicated mean effective pressure (IMEP),...

In this paper, the model-box system and demolding mechanism of gypsum block molding machine are designed using 3D modeling software. Then the movement simulation of gypsum block molding machine is completed. This is helpful to shorten the design period and improve the performance of product.

In order to study the static and dynamic characteristics of metal helical spring ,a finite element model of the spring was set up by using Ansys, An experiment was designed to validate the result, the results of the experiment and the Ansys proved that the static stiffness of metal helical spring is...

In order to realize the high efficient seal performance, according to the model that is completely deformed to contact substrate everywhere between hard substrate and soft substrate in Presson contact mechanics, the complete contact condition is advanced. Two gaskets with micrometer size surface fine...

The Western Depression of the Liaohe Basin is the major exploration area of the Liaohe Oilfield, and the production formation of Guantao in Du84 block of the Shu-1 area contains extra heavy oil with a depth of 530-640m. Steam Assisted Gravity Drainage (SAGD) method had been applied to the development...

Research the depth of 3000m Work-Class ROV as mock object and develop a ROV for land test. This device is set three lifting point in the top. The rope connecting the front two lifting point is fixed, the rope connecting the rear lifting point change the length by motor. All of those lifting point are...

With the deepening of the Marine development, underwater constructing often need to use the ROV. In order to verify the construction scheme, ensuring construction efficiency, the staff will use ROV or Dummy ROV on land to simulate construction. As the main body of the ROV, the manipulator is the execution...

Android platform has gradually become the most popular mobile terminal operating system, while the number of software applications based on which is also quite amazing. At the same time, the security threats are also increasing, and the degree of threat is gradually deepening. Therefore, we need to create...

In this paper, the vibration of power machinery on the deck which is simplified to forced vibration of four edges simply supported rectangular thin plate was studied. The theoretical model of the system is built based on the vibration properties of deck using four-pole parameters method. For analyzing...

In the present research the crack identification in rotor systems is proposed based on Holospectrum. The purpose of the research is to detect not only the crack location on a rotor shaft, but also the crack type and the angle between two cracks on a rotor shaft. 3D Holospectrum is introduced to detect...

Aiming at the virtual movement emulation's design scheme of the jumbolter , the jumbolter's digital model is built by the 3D modeling software PRO/E5.0,the research combined the jumbolter with virtual reality technology. Jumbolter simulation virtual environment was simulated by means of 3 dimentional...

The effect of flow structures in the tip region on the stability of NASA Rotor 37 has been examined with numerical simulation. Stall inception mechanism of Rotor 37 is presented firstly with principal focus on the tip leakage flow behavior, passage shock wave and leakage flow vortex. Detailed survey...

Ram is one of the key component of high-end CNC machine tools, which casting residual stress will affect its machining accuracy, quality and performance of machine seriously. This paperutilizing blind hole method to measure residual stress of ram cast-ing,the results show that: the screw mounting face...

The vacuum eutectic solder joint is widely used in the advantages of large thermal conductivity, small thermal resistance and so on. But the void ratio of vacuum eutectic solder has a great influence on the thermal conductivity, and the smaller the void ratio is, the greater the thermal conductivity...

Currently existing residential buildings energy-saving are include two ways: reform of building envelope and reform of building heat metering system. The study of building envelope energy-saving technical measures includes: wall insulation, window glazing, roofing insulation, However energy-saving for...

In order to research the effect of nozzle geometric parameters on the jet flow performance in processing a thin and sensitive material. A design of two nozzles with different structure has been proposed for hybrid laser/water-jet scribing technology. In this paper, computational fluid dynamics (CFD)...

In this paper the wind tunnel test is used to analyze the effect of root chord of propeller on aerodynamic performance. There were two distributions of the chord near hub of propeller, all parameters are same except the maximum chord. Two models are respectively made of carbon fiber and beech. From the...

According to structural characteristics and repair process of Urban Mass Transit Train bogies, A method of designing of virtual overhaul Teaching System is put forward combining 3D bogie modeling, virtual scene created and Human-Computer Interaction technology, that is Pro/E as a tool for 3d assembly...

In the subject one, we firstly number the legs of the table. According to the Pythagorean theorem, we can calculate the length of the table legs. Then describe the dynamic folding process of table by the change condition of angle between table leg and the ground, also we can understand the change of...

The attitude displacement process of nuclear power large piecesis time-consuming and very dangerous, which has became one of the important factors for improving productivity and enhancing the workpiece's surface quality.However, the research and development of upenders for nuclear power large parts is...

The paper intends to investigate the changes of Heart Rate Variability (HRV) indexes of healthy drivers while driving on a real urban road environment in order to excavate the variation of drivers' driving workload when turning left. Electrocardiograph (ECG) was recorded continuously while drivers driving...

In block A channel sand bodies spread in small scale; the drilling rate is low; level of well control is low; under the current condition of well pattern, the accuracy sand body prediction is low; the accuracy of fault recognition is low; the injection and production relationship of single sand body...

The 3D parameterized model of sub-soiling shovel was created using Creo Parametric 2.0 in accordance with material object. According to structures, materials, loads and stress situation of sub-soiling shovel, the static analysis and modal analysis of the model are carried out by using ANSYS Workbench14.0....

Considering that we have less knowledge of performance degradation mechanism of combined rotor, performance degradation characteristics of combined rotor were discussed, from the perspective of system performance degradation caused by structural damage. Firstly, dynamic features of combined rotor was...

Double row pile as a retaining structure in slope reinforcement and foundation pit support engineering and many other neighborhoods, it has a wide application. But due to the complexity and difference of the soil around the pile, the interaction mechanism between pile and soil is not clear. Calculated...

It is hard to get the pressure of high speed water column on the inner barrel through the gun water-projectile test. In order to optimize the design, the calculation model of the pressure in the body tube is established. Two dimensional numerical simulation was carried out for gun water-projectile test's...

The traditional calibration phase just can meet the he static tower condition at pier, but can not use for the dynamic target. The Fast Correction Phase model is built for Ship-borne Dynamic Platform of tracking and control radar. The anti-cosine method is put forward to calculate phase difference. Then...

In engineering application a quantitative description of both fatigue and creep damage mechanisms is demanded for high-temperature alloy. The present work employs the cohesive zone model to numerically simulate the crack propagation in a nickel-based super-alloy. Effect of loading hold period is discussed....

In this paper, the vibro-acoustic response of functionally graded materials (FGM) plates subjected to thermal environment are investigated analytically. The governing equations of the FGM plate subjected to thermal environment are derived based on the classic plate theory through Hamilton's principle....

Based on the analysis of theories of vector control, the simulation model of permanent magnet AC servo system built on MATLAB/SIMULINK is designed and studied, the simulation results prove the validity of the simulation model.

With the speed of the development of science and technology speeds up unceasingly, the traditional technology forecasting often limited the price of large, long cycle. This paper proposes a new subject to carry out technology foresight and industrial path planning research---extenics. Extension through...

The shaft power curve of low specific-speed centrifugal pump is a steep rise with the increase of flow rate. The blockage of the impeller channel can reduce effectively the shaft power of low specific-speed centrifugal pump, and achieve pump's non-overload characteristics. In this paper, the flow channel...

This article presents reliability analysis of damping flange from dual mass flywheel. In this paper, workbench software was used to analyze the reliability of the dual mass flywheel damping flange. First, the mechanical model of the damping flange was built based on the dual mass flywheel's force transmission...

In the process of building electrical equipment installation, if there is a certain problem, it not only affects the construction quality of power supply, but also affects the construction safety. This paper puts forward corresponding countermeasures aiming at building electrical equipment installation...

Key technologies of machine vision detection system for the industrial part are investigated and an intact set of high-speed detection system is developed. On the basis of introducing the entire design of machine vision platform, analyzing the software and hardware structure and fundamental principles...

On the basis of the discussion of green design, the characteristics of green product are analyzed. Pointed out that the green design is the need of sustainable development of human society, is the necessity of sustainable development. In order to make the social and economic sustainable development,...

The working environment of engineering mechanical arm hydraulic drive system is complex. The response indicators of the hydraulic drive system need a higher requirement. The conventional PID control method is limited to the complexity and imprecision of the mathematical model of the hydraulic drive system,...

Aiming at cam indexing mechanism, this paper, considering the influence of elastic deformation, bending and twisting factors, combining the knowledge of rigid-flexible coupling Dynamic System, established the rigid-flexible coupling dynamic model of globoid cam indexing mechanism with six degrees of...

A two-shaft omnibearing scanning mechanism was designed as carrying device for full polarized microwave radiometer, and the 3D model of two-shaft omnibearing scanning mechanism established in CATIA environment was imported into ANSYS finite element analysis software to establish a finite element model...

ith the rapid development of construction industry, construction quality and safety problems are becoming more and more serious. Building structure design is related with the quality and security of the building. How to improve building structure design safety has become the focus of people. This paper...

In the present study, billet is designed by utilizing the flow relief-hole principle to improve the dimensional accuracy during the cold precision forging of helical gear. A three-dimensional FE simulation was carried out to analyze the deformation features of billet with different initial diameter of...

With the rapid development of social economy, Science and technology level are increasingly improving, especially accelerated pace of life, People demand for fireproof, anti-theft and anti-gas equipment is greatly increased, and for theft, fire and other accident monitoring and alarm system requirements...

This paper introduces a kind of the harmonic motion curves, which characterized by multi-harmonic component, and the expression form can be divided into two cases: general Cam mechanism and indexing Cam mechanism. Combined with the instance, it compares the characteristic values with other commonly motion...

In recent years, environmental concerns call for the reduced of cutting fluids in metal machining. The green manufacturing techniques are investigated to achieve the objective. In this paper, for the aim of green cutting, the dry electrostatic cooling was applied instead of cutting fluid. The effects...

Based on the design of orthogonal cutting tests, study the processing and the analysis method of orthogonal test data, program the module for solving regression equation, research on the calculation of cutting force curve, drawing and display issues based on the cutting test data which is stored cutting...

To solve the problem of "Information Island", namely, the condition when the data can not be shared in the process of industry clustering, and wasted resources in Engineering Machinery industry clusters. An implementation method of technology service platform of industry cluster in engineering machinery...

This article is mainly aimed at the solving the problem of singularity phenomenon which exists in the connecting-rod wheeled robot. We propose a multiphase connecting-rod wheeled robot based on multiphase connecting-rod structure and analyze the design principle and obstacle-overcoming ability of the...

Joint-manipulator installed on the intelligent wheelchair robot decides the whole system capability. The kinematics analysis and structure design about mechanical wrist and gripper for joint-manipulator are discussed in this paper. Based on the D-H coordinate method, the kinematic equation of joint-manipulator...

As the signal frequency of integrated circuit keeps increasing, parasitic effects caused by the interconnect transmission structure used in IC ceramic package is becoming important factor which will influence the transmission performance of the signal path. In this paper, parasitic parameters (Resistance,...

An approach of fault diagnosis of rolling bearing based on B-spline Intrinsic Time-scale Decomposition (BITD) and Stochastic Resonance (SR) was presented. Firstly, SR was used to reduce the noise of the rolling bearing vibration signal, then the bearing vibration signal was decomposed into several Proper...

According to the characteristics of copper belt's rolling process, the roll system's elastic deformation model of Sendzimir twenty roll mill is established, the contact normal stress between the rolls is calculated by using the ABAQUS software and the influence factors of the contact normal stress between...